Added chan_lantiq source and config files for asterisk13 135/head
authorStefan Koch <stefan.koch10@gmail.com>
Sat, 4 Mar 2017 15:25:43 +0000 (16:25 +0100)
committerStefan Koch <stefan.koch10@gmail.com>
Thu, 9 Mar 2017 22:42:33 +0000 (23:42 +0100)
Version 3ef0469164e6bb2ef8e1986bbb4086af7cf3e2b2 (asterisk-13) from repository
https://github.com/kochstefan/asterisk_channel_lantiq.git

Signed-off-by: Stefan Koch <stefan.koch10@gmail.com>
net/asterisk-13.x/src-lantiq/channels/chan_lantiq.c [new file with mode: 0644]
net/asterisk-13.x/src-lantiq/configs/samples/lantiq.conf.sample [new file with mode: 0644]

diff --git a/net/asterisk-13.x/src-lantiq/channels/chan_lantiq.c b/net/asterisk-13.x/src-lantiq/channels/chan_lantiq.c
new file mode 100644 (file)
index 0000000..19d422e
--- /dev/null
@@ -0,0 +1,2301 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2012, Luka Perkov
+ * Copyright (C) 2012, John Crispin
+ * Copyright (C) 2012, Andrej Vlašić
+ * Copyright (C) 2012, Kaspar Schleiser for T-Labs
+ *                     (Deutsche Telekom Innovation Laboratories)
+ * Copyright (C) 2012, Mirko Vogt for T-Labs
+ *                     (Deutsche Telekom Innovation Laboratories)
+ * Copyright (c) 2015, Antonio Eugenio Burriel
+ * Copyright (C) 2017, Stefan Koch
+ *
+ * Luka Perkov <openwrt@lukaperkov.net>
+ * John Crispin <blogic@openwrt.org>
+ * Andrej Vlašić <andrej.vlasic0@gmail.com>
+ * Kaspar Schleiser <kaspar@schleiser.de>
+ * Mirko Vogt <mirko@openwrt.org>
+ * Antonio Eugenio Burriel <aeburriel@gmail.com>
+ * Stefan Koch <stefan.koch10@gmail.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief Asterisk channel line driver for Lantiq based TAPI boards
+ *
+ * \author Luka Perkov <openwrt@lukaperkov.net>
+ * \author John Crispin <blogic@openwrt.org>
+ * \author Andrej Vlašić <andrej.vlasic0@gmail.com>
+ * \author Kaspar Schleiser <kaspar@schleiser.de>
+ * \author Mirko Vogt <mirko@openwrt.org>
+ * \author Antonio Eugenio Burriel <aeburriel@gmail.com>
+ * \author Stefan Koch <stefan.koch10@gmail.com>
+ *
+ * \ingroup channel_drivers
+ */
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision: xxx $")
+
+#include <ctype.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <signal.h>
+#include <stdio.h>
+#ifdef HAVE_LINUX_COMPILER_H
+#include <linux/compiler.h>
+#endif
+#include <linux/telephony.h>
+
+#include <asterisk/lock.h>
+#include <asterisk/channel.h>
+#include <asterisk/config.h>
+#include <asterisk/module.h>
+#include <asterisk/pbx.h>
+#include <asterisk/utils.h>
+#include <asterisk/callerid.h>
+#include <asterisk/causes.h>
+#include <asterisk/indications.h>
+#include <asterisk/stringfields.h>
+#include <asterisk/musiconhold.h>
+#include <asterisk/sched.h>
+#include <asterisk/cli.h>
+#include <asterisk/devicestate.h>
+#include <asterisk/format_cache.h>
+
+/* Lantiq TAPI includes */
+#include <drv_tapi/drv_tapi_io.h>
+#include <drv_vmmc/vmmc_io.h>
+
+#define TAPI_AUDIO_PORT_NUM_MAX                 2
+
+/* Tapi predefined tones 0 to 31 */
+#define TAPI_TONE_LOCALE_NONE                  0
+//#define TAPI_TONE_LOCALE_DIAL_CODE           25
+//#define TAPI_TONE_LOCALE_RINGING_CODE                26
+//#define TAPI_TONE_LOCALE_BUSY_CODE           27
+//#define TAPI_TONE_LOCALE_CONGESTION_CODE     27
+
+/* Tapi custom tones 32 to 256 */
+#define TAPI_TONE_LOCALE_DIAL_CODE             32
+#define TAPI_TONE_LOCALE_RINGING_CODE          33
+#define TAPI_TONE_LOCALE_BUSY_CODE             34
+#define TAPI_TONE_LOCALE_CONGESTION_CODE       35
+
+#define LANTIQ_CONTEXT_PREFIX "lantiq"
+#define DEFAULT_INTERDIGIT_TIMEOUT 4000
+#define G723_HIGH_RATE 1
+#define LED_NAME_LENGTH 32
+
+static const char config[] = "lantiq.conf";
+
+static char firmware_filename[PATH_MAX] = "/lib/firmware/ifx_firmware.bin";
+static char bbd_filename[PATH_MAX] = "/lib/firmware/ifx_bbd_fxs.bin";
+static char base_path[PATH_MAX] = "/dev/vmmc";
+static int per_channel_context = 0;
+
+/* tone generator types */
+enum tone_generator_t {
+       TONE_INTEGRATED, /* tapi tone generator */
+       TONE_ASTERISK, /* asterisk tone generator where possible */
+       TONE_MEDIA /* media tone where possible */
+};
+
+/* tone generator (default is integraded) */
+static enum tone_generator_t tone_generator = TONE_INTEGRATED;
+
+/* tone zones for dial, ring, busy and congestion */
+struct ast_tone_zone_sound *ts_dial;
+struct ast_tone_zone_sound *ts_ring;
+struct ast_tone_zone_sound *ts_busy;
+struct ast_tone_zone_sound *ts_congestion;
+
+/*
+ * The private structures of the Phone Jack channels are linked for selecting
+ * outgoing channels.
+ */
+enum channel_state {
+       ONHOOK,
+       OFFHOOK,
+       DIALING,
+       INCALL,
+       CALL_ENDED,
+       RINGING,
+       UNKNOWN
+};
+
+static struct lantiq_pvt {
+       struct ast_channel *owner;       /* Channel we belong to, possibly NULL   */
+       int port_id;                     /* Port number of this object, 0..n      */
+       int channel_state;
+       char context[AST_MAX_CONTEXT];   /* this port's dialplan context          */
+       int dial_timer;                  /* timer handle for autodial timeout     */
+       char dtmfbuf[AST_MAX_EXTENSION]; /* buffer holding dialed digits          */
+       int dtmfbuf_len;                 /* lenght of dtmfbuf                     */
+       int rtp_timestamp;               /* timestamp for RTP packets             */
+       int ptime;                       /* Codec base ptime                      */
+       uint16_t rtp_seqno;              /* Sequence nr for RTP packets           */
+       uint32_t call_setup_start;       /* Start of dialling in ms               */
+       uint32_t call_setup_delay;       /* time between ^ and 1st ring in ms     */
+       uint32_t call_start;             /* time we started dialling / answered   */
+       uint32_t call_answer;            /* time the callee answered our call     */
+       uint16_t jb_size;                /* Jitter buffer size                    */
+       uint32_t jb_underflow;           /* Jitter buffer injected samples        */
+       uint32_t jb_overflow;            /* Jitter buffer dropped samples         */
+       uint16_t jb_delay;               /* Jitter buffer: playout delay          */
+       uint16_t jb_invalid;             /* Jitter buffer: Nr. of invalid packets */
+} *iflist = NULL;
+
+static struct lantiq_ctx {
+               int dev_fd;
+               int channels;
+               int ch_fd[TAPI_AUDIO_PORT_NUM_MAX];
+               char voip_led[LED_NAME_LENGTH]; /* VOIP LED name */
+               char ch_led[TAPI_AUDIO_PORT_NUM_MAX][LED_NAME_LENGTH]; /* FXS LED names */
+               int interdigit_timeout; /* Timeout in ms between dialed digits */
+} dev_ctx;
+
+static int ast_digit_begin(struct ast_channel *ast, char digit);
+static int ast_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
+static int ast_lantiq_call(struct ast_channel *ast, const char *dest, int timeout);
+static int ast_lantiq_hangup(struct ast_channel *ast);
+static int ast_lantiq_answer(struct ast_channel *ast);
+static struct ast_frame *ast_lantiq_read(struct ast_channel *ast);
+static int ast_lantiq_write(struct ast_channel *ast, struct ast_frame *frame);
+static struct ast_frame *ast_lantiq_exception(struct ast_channel *ast);
+static int ast_lantiq_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen);
+static int ast_lantiq_fixup(struct ast_channel *old, struct ast_channel *new);
+static struct ast_channel *ast_lantiq_requester(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assigned_ids, const struct ast_channel *requestor, const char *data, int *cause);
+static int ast_lantiq_devicestate(const char *data);
+static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *args, char *buf, size_t buflen);
+static void lantiq_jb_get_stats(int c);
+static struct ast_format *lantiq_map_rtptype_to_format(uint8_t rtptype);
+static uint8_t lantiq_map_format_to_rtptype(const struct ast_format *format);
+static int lantiq_conf_enc(int c, const struct ast_format *format);
+static void lantiq_reset_dtmfbuf(struct lantiq_pvt *pvt);
+
+static struct ast_channel_tech lantiq_tech = {
+       .type = "TAPI",
+       .description = "Lantiq TAPI Telephony API Driver",
+       .send_digit_begin = ast_digit_begin,
+       .send_digit_end = ast_digit_end,
+       .call = ast_lantiq_call,
+       .hangup = ast_lantiq_hangup,
+       .answer = ast_lantiq_answer,
+       .read = ast_lantiq_read,
+       .write = ast_lantiq_write,
+       .exception = ast_lantiq_exception,
+       .indicate = ast_lantiq_indicate,
+       .fixup = ast_lantiq_fixup,
+       .requester = ast_lantiq_requester,
+       .devicestate = ast_lantiq_devicestate,
+       .func_channel_read = acf_channel_read
+};
+
+/* Protect the interface list (of lantiq_pvt's) */
+AST_MUTEX_DEFINE_STATIC(iflock);
+
+/*
+ * Protect the monitoring thread, so only one process can kill or start it, and
+ * not when it's doing something critical.
+ */
+AST_MUTEX_DEFINE_STATIC(monlock);
+
+/* The scheduling context */
+struct ast_sched_context *sched;
+
+/*
+ * This is the thread for the monitor which checks for input on the channels
+ * which are not currently in use.
+ */
+static pthread_t monitor_thread = AST_PTHREADT_NULL;
+
+
+#define WORDS_BIGENDIAN
+/* struct taken from some GPLed code by  Mike Borella */
+typedef struct rtp_header
+{
+#if defined(WORDS_BIGENDIAN)
+  uint8_t version:2, padding:1, extension:1, csrc_count:4;
+  uint8_t marker:1, payload_type:7;
+#else
+  uint8_t csrc_count:4, extension:1, padding:1, version:2;
+  uint8_t payload_type:7, marker:1;
+#endif
+  uint16_t seqno;
+  uint32_t timestamp;
+  uint32_t ssrc;
+} rtp_header_t;
+#define RTP_HEADER_LEN 12
+#define RTP_BUFFER_LEN 512
+/* Internal RTP payload types - standard */
+#define RTP_PCMU       0
+#define RTP_G723_63    4
+#define RTP_PCMA       8
+#define RTP_G722       9
+#define RTP_CN         13
+#define RTP_G729       18
+/* Internal RTP payload types - custom   */
+#define RTP_G7221      100
+#define RTP_G726       101
+#define RTP_ILBC       102
+#define RTP_SLIN8      103
+#define RTP_SLIN16     104
+#define RTP_SIREN7     105
+#define RTP_G723_53    106
+
+
+/* LED Control. Taken with modifications from SVD by Luca Olivetti <olivluca@gmail.com> */
+#define LED_SLOW_BLINK 1000
+#define LED_FAST_BLINK 100
+static FILE *led_open(const char *led, char* sub)
+{
+       char fname[100];
+
+       if (snprintf(fname, sizeof(fname), "/sys/class/leds/%s/%s", led, sub) >= sizeof(fname))
+               return NULL;
+       return fopen(fname, "r+");
+}
+
+static FILE *led_trigger(const char *led)
+{
+       return led_open(led, "trigger");
+}
+
+static void led_delay(const char *led, int onoff, int msec)
+{
+       FILE *fp = led_open(led, onoff ? "delay_on" : "delay_off");
+       if (fp) {
+               fprintf(fp,"%d\n",msec);
+               fclose(fp);
+       }
+}
+
+static void led_on(const char *led)
+{
+       FILE *fp;
+
+       fp = led_trigger(led);
+       if (fp) {
+               fprintf(fp,"default-on\n");
+               fclose(fp);
+       }
+}
+
+static void led_off(const char *led)
+{
+       FILE *fp;
+
+       fp = led_trigger(led);
+       if (fp) {
+               fprintf(fp,"none\n");
+               fclose(fp);
+       }
+}
+
+static void led_blink(const char *led, int period)
+{
+       FILE *fp;
+
+       fp = led_trigger(led);
+       if (fp) {
+               fprintf(fp, "timer\n");
+               fclose(fp);
+               led_delay(led, 1, period/2);
+               led_delay(led, 0, period/2);
+       }
+}
+
+static uint32_t now(void) {
+       struct timespec ts;
+       clock_gettime(CLOCK_MONOTONIC, &ts);
+
+       uint64_t tmp = ts.tv_sec*1000 + (ts.tv_nsec/1000000);
+       return (uint32_t) tmp;
+}
+
+static uint32_t epoch(void) {
+       struct timeval tv;
+       gettimeofday(&tv, NULL);
+
+       return tv.tv_sec;
+}
+
+static int lantiq_dev_open(const char *dev_path, const int32_t ch_num)
+{
+       char dev_name[PATH_MAX];
+       memset(dev_name, 0, sizeof(dev_name));
+       snprintf(dev_name, PATH_MAX, "%s%u%u", dev_path, 1, ch_num);
+       return open((const char*)dev_name, O_RDWR, 0644);
+}
+
+static void lantiq_ring(int c, int r, const char *cid, const char *name)
+{
+       uint8_t status;
+
+       if (r) {
+               led_blink(dev_ctx.ch_led[c], LED_FAST_BLINK);
+               if (!cid) {
+                       status = (uint8_t) ioctl(dev_ctx.ch_fd[c], IFX_TAPI_RING_START, 0);
+               } else {
+                       IFX_TAPI_CID_MSG_t msg;
+                       IFX_TAPI_CID_MSG_ELEMENT_t elements[3];
+                       int count = 0;
+                       time_t timestamp;
+                       struct tm *tm;
+
+                       elements[count].string.elementType = IFX_TAPI_CID_ST_CLI;
+                       elements[count].string.len = strlen(cid);
+                       if (elements[count].string.len > IFX_TAPI_CID_MSG_LEN_MAX) {
+                               elements[count].string.len = IFX_TAPI_CID_MSG_LEN_MAX;
+                       }
+                       strncpy((char *)elements[count].string.element, cid, IFX_TAPI_CID_MSG_LEN_MAX);
+                       elements[count].string.element[IFX_TAPI_CID_MSG_LEN_MAX-1] = '\0';
+                       count++;
+
+                       if (name) {
+                               elements[count].string.elementType = IFX_TAPI_CID_ST_NAME;
+                               elements[count].string.len = strlen(name);
+                               if (elements[count].string.len > IFX_TAPI_CID_MSG_LEN_MAX) {
+                                       elements[count].string.len = IFX_TAPI_CID_MSG_LEN_MAX;
+                               }
+                               strncpy((char *)elements[count].string.element, name, IFX_TAPI_CID_MSG_LEN_MAX);
+                               elements[count].string.element[IFX_TAPI_CID_MSG_LEN_MAX-1] = '\0';
+                               count++;
+                       }
+
+                       if ((time(&timestamp) != -1) && ((tm=localtime(&timestamp)) != NULL)) {
+                               elements[count].date.elementType = IFX_TAPI_CID_ST_DATE;
+                               elements[count].date.day = tm->tm_mday;
+                               elements[count].date.month = tm->tm_mon + 1;
+                               elements[count].date.hour = tm->tm_hour;
+                               elements[count].date.mn = tm->tm_min;
+                               count++;
+                       }
+
+                       msg.txMode = IFX_TAPI_CID_HM_ONHOOK;
+                       msg.messageType = IFX_TAPI_CID_MT_CSUP;
+                       msg.message = elements;
+                       msg.nMsgElements = count;
+
+                       status = (uint8_t) ioctl(dev_ctx.ch_fd[c], IFX_TAPI_CID_TX_SEQ_START, (IFX_int32_t) &msg);
+               }
+       } else {
+               status = (uint8_t) ioctl(dev_ctx.ch_fd[c], IFX_TAPI_RING_STOP, 0);
+               led_off(dev_ctx.ch_led[c]);
+       }
+
+       if (status) {
+               ast_log(LOG_ERROR, "%s ioctl failed\n",
+                       (r ? "IFX_TAPI_RING_START" : "IFX_TAPI_RING_STOP"));
+       }
+}
+
+/* add a frequency to TAPE tone structure */
+/* returns the TAPI frequency ID */
+static int tapitone_add_freq (IFX_TAPI_TONE_t *tone, IFX_uint32_t freq) {
+       const int n=4; /* TAPI tone structure supports up to 4 frequencies */
+       int error=0;
+       int ret;
+       int i;
+
+       /* pointer array for freq's A, B, C, D */
+       IFX_uint32_t *freqarr[] = { &(tone->simple.freqA), &(tone->simple.freqB), &(tone->simple.freqC), &(tone->simple.freqD) };
+
+       /* pointer array for level's A, B, C, D */
+       IFX_int32_t *lvlarr[] = { &(tone->simple.levelA), &(tone->simple.levelB), &(tone->simple.levelC), &(tone->simple.levelD) };
+
+       /* array for freq IDs */
+       IFX_uint32_t retarr[] = { IFX_TAPI_TONE_FREQA, IFX_TAPI_TONE_FREQB, IFX_TAPI_TONE_FREQC, IFX_TAPI_TONE_FREQD };
+
+       /* determine if freq already set */
+       for (i = 0; i < n; i++) {
+               if(*freqarr[i] == freq) /* freq found */
+                       break;
+               else if (i == n-1) /* last iteration */
+                       error=1; /* not found */
+       }
+
+       /* write frequency if not already set */
+       if(error) {
+               error=0; /* reset error flag */
+               /* since freq is not set, write it into first free place */
+               for (i = 0; i < n; i++) {
+                       if(!*freqarr[i]) { /* free place */
+                               *freqarr[i] = freq; /* set freq */
+                               *lvlarr[i] = -150; /* set volume level */
+                               break;
+                       } else if (i == n-1) /* last iteration */
+                               error=1; /* no free place becaus maximum count of freq's is set */
+               }
+       }
+
+       /* set freq ID return value */
+       if (!freq || error)
+               ret = IFX_TAPI_TONE_FREQNONE;
+       else
+               ret = retarr[i];
+
+       return ret; /* freq ID */
+}
+
+/* convert asterisk playlist string to tapi tone structure */
+/* based on ast_playtones_start() from indications.c of asterisk 13 */
+static void playlist_to_tapitone (const char *playlst, IFX_uint32_t index, IFX_TAPI_TONE_t *tone)
+{
+       char *s, *data = ast_strdupa(playlst);
+       char *stringp;
+       char *separator;
+       int i;
+
+       /* initialize tapi tone structure */
+       memset(tone, 0, sizeof(IFX_TAPI_TONE_t));
+       tone->simple.format = IFX_TAPI_TONE_TYPE_SIMPLE;
+       tone->simple.index = index;
+
+       stringp = data;
+
+       /* check if the data is separated with '|' or with ',' by default */
+       if (strchr(stringp,'|')) {
+               separator = "|";
+       } else {
+               separator = ",";
+       }
+
+       for ( i = 0; (s = strsep(&stringp, separator)) && !ast_strlen_zero(s) && i < IFX_TAPI_TONE_STEPS_MAX; i++) {
+               struct ast_tone_zone_part tone_data = {
+                       .time = 0,
+               };
+
+               s = ast_strip(s);
+               if (s[0]=='!') {
+                       s++;
+               }
+
+               if (ast_tone_zone_part_parse(s, &tone_data)) {
+                       ast_log(LOG_ERROR, "Failed to parse tone part '%s'\n", s);
+                       continue;
+               }
+
+               /* first tone must hava a cadence */
+               if (i==0 && !tone_data.time)
+                       tone->simple.cadence[i] = 1000;
+               else
+                       tone->simple.cadence[i] = tone_data.time;
+
+               /* check for modulation */
+               if (tone_data.modulate) {
+                       tone->simple.modulation[i] = IFX_TAPI_TONE_MODULATION_ON;
+                       tone->simple.modulation_factor = IFX_TAPI_TONE_MODULATION_FACTOR_90;
+               }
+
+               /* copy freq's to tapi tone structure */
+               /* a freq will implicitly skipped if it is zero  */
+               tone->simple.frequencies[i] |= tapitone_add_freq(tone, tone_data.freq1);
+               tone->simple.frequencies[i] |= tapitone_add_freq(tone, tone_data.freq2);
+       }
+}
+
+static int lantiq_play_tone(int c, int t)
+{
+       /* stop currently playing tone before starting new one */
+       ioctl(dev_ctx.ch_fd[c], IFX_TAPI_TONE_LOCAL_PLAY, TAPI_TONE_LOCALE_NONE);
+
+       /* do not handle stop tone twice */
+       if (t != TAPI_TONE_LOCALE_NONE) {
+               /* start new tone */
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_TONE_LOCAL_PLAY, t)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_TONE_LOCAL_PLAY ioctl failed\n");
+                       return -1;
+               }
+       }
+
+       return 0;
+}
+
+static enum channel_state lantiq_get_hookstatus(int port)
+{
+       uint8_t status;
+
+       if (ioctl(dev_ctx.ch_fd[port], IFX_TAPI_LINE_HOOK_STATUS_GET, &status)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_LINE_HOOK_STATUS_GET ioctl failed\n");
+               return UNKNOWN;
+       }
+
+       if (status) {
+               return OFFHOOK;
+       } else {
+               return ONHOOK;
+       }
+}
+
+static int
+lantiq_dev_binary_buffer_create(const char *path, uint8_t **ppBuf, uint32_t *pBufSz)
+{
+       FILE *fd;
+       struct stat file_stat;
+       int status = -1;
+
+       fd = fopen(path, "rb");
+       if (fd == NULL) {
+               ast_log(LOG_ERROR, "binary file %s open failed\n", path);
+               goto on_exit;
+       }
+
+       if (stat(path, &file_stat)) {
+               ast_log(LOG_ERROR, "file %s statistics get failed\n", path);
+               goto on_exit;
+       }
+
+       *ppBuf = malloc(file_stat.st_size);
+       if (*ppBuf == NULL) {
+               ast_log(LOG_ERROR, "binary file %s memory allocation failed\n", path);
+               goto on_exit;
+       }
+
+       if (fread (*ppBuf, sizeof(uint8_t), file_stat.st_size, fd) != file_stat.st_size) {
+               ast_log(LOG_ERROR, "file %s read failed\n", path);
+               status = -1;
+               goto on_exit;
+       }
+
+       *pBufSz = file_stat.st_size;
+       status = 0;
+
+on_exit:
+       if (fd != NULL)
+               fclose(fd);
+
+       if (*ppBuf != NULL && status)
+               free(*ppBuf);
+
+       return status;
+}
+
+static int32_t lantiq_dev_firmware_download(int32_t fd, const char *path)
+{
+       uint8_t *firmware = NULL;
+       uint32_t size = 0;
+       VMMC_IO_INIT vmmc_io_init;
+
+       ast_log(LOG_DEBUG, "loading firmware: \"%s\".\n", path);
+
+       if (lantiq_dev_binary_buffer_create(path, &firmware, &size))
+               return -1;
+
+       memset(&vmmc_io_init, 0, sizeof(VMMC_IO_INIT));
+       vmmc_io_init.pPRAMfw = firmware;
+       vmmc_io_init.pram_size = size;
+
+       if (ioctl(fd, FIO_FW_DOWNLOAD, &vmmc_io_init)) {
+               ast_log(LOG_ERROR, "FIO_FW_DOWNLOAD ioctl failed\n");
+               return -1;
+       }
+
+       if (firmware != NULL)
+               free(firmware);
+
+       return 0;
+}
+
+static const char *state_string(enum channel_state s)
+{
+       switch (s) {
+               case ONHOOK: return "ONHOOK";
+               case OFFHOOK: return "OFFHOOK";
+               case DIALING: return "DIALING";
+               case INCALL: return "INCALL";
+               case CALL_ENDED: return "CALL_ENDED";
+               case RINGING: return "RINGING";
+               default: return "UNKNOWN";
+       }
+}
+
+static const char *control_string(int c)
+{
+       switch (c) {
+               case AST_CONTROL_HANGUP: return "Other end has hungup";
+               case AST_CONTROL_RING: return "Local ring";
+               case AST_CONTROL_RINGING: return "Remote end is ringing";
+               case AST_CONTROL_ANSWER: return "Remote end has answered";
+               case AST_CONTROL_BUSY: return "Remote end is busy";
+               case AST_CONTROL_TAKEOFFHOOK: return "Make it go off hook";
+               case AST_CONTROL_OFFHOOK: return "Line is off hook";
+               case AST_CONTROL_CONGESTION: return "Congestion (circuits busy)";
+               case AST_CONTROL_FLASH: return "Flash hook";
+               case AST_CONTROL_WINK: return "Wink";
+               case AST_CONTROL_OPTION: return "Set a low-level option";
+               case AST_CONTROL_RADIO_KEY: return "Key Radio";
+               case AST_CONTROL_RADIO_UNKEY: return "Un-Key Radio";
+               case AST_CONTROL_PROGRESS: return "Remote end is making Progress";
+               case AST_CONTROL_PROCEEDING: return "Remote end is proceeding";
+               case AST_CONTROL_HOLD: return "Hold";
+               case AST_CONTROL_UNHOLD: return "Unhold";
+               case AST_CONTROL_SRCUPDATE: return "Media Source Update";
+               case AST_CONTROL_CONNECTED_LINE: return "Connected Line";
+               case AST_CONTROL_REDIRECTING: return "Redirecting";
+               case AST_CONTROL_INCOMPLETE: return "Incomplete";
+               case -1: return "Stop tone";
+               default: return "Unknown";
+       }
+}
+
+static int ast_lantiq_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen)
+{
+       struct lantiq_pvt *pvt = ast_channel_tech_pvt(chan);
+
+       ast_verb(3, "phone indication \"%s\"\n", control_string(condition));
+
+       switch (condition) {
+               case -1:
+                       {
+                               lantiq_play_tone(pvt->port_id, TAPI_TONE_LOCALE_NONE);
+                               return 0;
+                       }
+               case AST_CONTROL_CONGESTION:
+                       {
+                               if (tone_generator == TONE_INTEGRATED)
+                                       lantiq_play_tone(pvt->port_id, TAPI_TONE_LOCALE_CONGESTION_CODE);
+                               else
+                                       ast_playtones_start(chan, 0, ts_congestion->data, 1);
+
+                               return 0;
+                       }
+               case AST_CONTROL_BUSY:
+                       {
+                               if (tone_generator == TONE_INTEGRATED)
+                                       lantiq_play_tone(pvt->port_id, TAPI_TONE_LOCALE_BUSY_CODE);
+                               else
+                                       ast_playtones_start(chan, 0, ts_busy->data, 1);
+
+                               return 0;
+                       }
+               case AST_CONTROL_RINGING:
+               case AST_CONTROL_PROGRESS:
+                       {
+                               pvt->call_setup_delay = now() - pvt->call_setup_start;
+
+                               if (tone_generator == TONE_INTEGRATED)
+                                       lantiq_play_tone(pvt->port_id, TAPI_TONE_LOCALE_RINGING_CODE);
+                               else if (tone_generator == TONE_ASTERISK) /* do nothing if TONE_MEDIA is set */
+                                       ast_playtones_start(chan, 0, ts_ring->data, 1);
+
+                               return 0;
+                       }
+               default:
+                       {
+                               /* -1 lets asterisk generate the tone */
+                               return -1;
+                       }
+       }
+}
+
+static int ast_lantiq_fixup(struct ast_channel *old, struct ast_channel *new)
+{
+       ast_log(LOG_DEBUG, "entering... no code here...\n");
+       return 0;
+}
+
+static int ast_digit_begin(struct ast_channel *chan, char digit)
+{
+       /* TODO: Modify this callback to let Asterisk support controlling the length of DTMF */
+       ast_log(LOG_DEBUG, "entering... no code here...\n");
+       return 0;
+}
+
+static int ast_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
+{
+       ast_log(LOG_DEBUG, "entering... no code here...\n");
+       return 0;
+}
+
+static int ast_lantiq_call(struct ast_channel *ast, const char *dest, int timeout)
+{
+       int res = 0;
+       struct lantiq_pvt *pvt;
+
+       /* lock to prevent simultaneous access with do_monitor thread processing */
+       ast_mutex_lock(&iflock);
+
+       pvt = ast_channel_tech_pvt(ast);
+       ast_log(LOG_DEBUG, "state: %s\n", state_string(pvt->channel_state));
+
+       if (pvt->channel_state == ONHOOK) {
+               struct ast_party_id connected_id = ast_channel_connected_effective_id(ast);
+               const char *cid = connected_id.number.valid ? connected_id.number.str : NULL;
+               const char *name = connected_id.name.valid ? connected_id.name.str : NULL;
+
+               ast_log(LOG_DEBUG, "port %i is ringing\n", pvt->port_id);
+               ast_log(LOG_DEBUG, "port %i CID: %s\n", pvt->port_id, cid ? cid : "none");
+               ast_log(LOG_DEBUG, "port %i NAME: %s\n", pvt->port_id, name ? name : "none");
+
+               lantiq_ring(pvt->port_id, 1, cid, name);
+               pvt->channel_state = RINGING;
+
+               ast_setstate(ast, AST_STATE_RINGING);
+               ast_queue_control(ast, AST_CONTROL_RINGING);
+       } else {
+               ast_log(LOG_DEBUG, "port %i is busy\n", pvt->port_id);
+               ast_setstate(ast, AST_STATE_BUSY);
+               ast_queue_control(ast, AST_CONTROL_BUSY);
+               res = -1;
+       }
+
+       ast_mutex_unlock(&iflock);
+
+       return res;
+}
+
+static int ast_lantiq_hangup(struct ast_channel *ast)
+{
+       struct lantiq_pvt *pvt;
+
+       /* lock to prevent simultaneous access with do_monitor thread processing */
+       ast_mutex_lock(&iflock);
+
+       pvt = ast_channel_tech_pvt(ast);
+       ast_log(LOG_DEBUG, "state: %s\n", state_string(pvt->channel_state));
+
+       if (ast_channel_state(ast) == AST_STATE_RINGING) {
+               ast_debug(1, "channel state is RINGING\n");
+       }
+
+       switch (pvt->channel_state) {
+               case RINGING:
+               case ONHOOK:
+                       lantiq_ring(pvt->port_id, 0, NULL, NULL);
+                       pvt->channel_state = ONHOOK;
+                       break;
+               default:
+                       ast_log(LOG_DEBUG, "we were hung up, play busy tone\n");
+                       pvt->channel_state = CALL_ENDED;
+                       lantiq_play_tone(pvt->port_id, TAPI_TONE_LOCALE_BUSY_CODE);
+       }
+
+       lantiq_jb_get_stats(pvt->port_id);
+
+       ast_setstate(ast, AST_STATE_DOWN);
+       ast_module_unref(ast_module_info->self);
+       ast_channel_tech_pvt_set(ast, NULL);
+       pvt->owner = NULL;
+
+       ast_mutex_unlock(&iflock);
+
+       return 0;
+}
+
+static int ast_lantiq_answer(struct ast_channel *ast)
+{
+       struct lantiq_pvt *pvt = ast_channel_tech_pvt(ast);
+
+       ast_log(LOG_DEBUG, "Remote end has answered call.\n");
+
+       if (lantiq_conf_enc(pvt->port_id, ast_channel_writeformat(ast)))
+               return -1;
+
+       pvt->call_answer = epoch();
+
+       return 0;
+}
+
+static struct ast_frame * ast_lantiq_read(struct ast_channel *ast)
+{
+       ast_log(LOG_DEBUG, "entering... no code here...\n");
+       return NULL;
+}
+
+/* create asterisk format from rtp payload type */
+static struct ast_format *lantiq_map_rtptype_to_format(uint8_t rtptype)
+{
+       struct ast_format *format = NULL;
+
+       switch (rtptype) {
+               case RTP_PCMU: format = ast_format_ulaw; break;
+               case RTP_PCMA: format = ast_format_alaw; break;
+               case RTP_G722: format = ast_format_g722; break;
+               case RTP_G726: format = ast_format_g726; break;
+               case RTP_SLIN8: format = ast_format_slin; break;
+               case RTP_SLIN16: format = ast_format_slin16; break;
+               case RTP_ILBC: format = ast_format_ilbc; break;
+               case RTP_SIREN7: format = ast_format_siren7; break;
+               case RTP_G723_63: format = ast_format_g723; break;
+               case RTP_G723_53: format = ast_format_g723; break;
+               case RTP_G729: format = ast_format_g729; break;
+               default:
+               {
+                       ast_log(LOG_ERROR, "unsupported rtptype received is 0x%x, forcing ulaw\n", (unsigned) rtptype);
+                       format = ast_format_ulaw;
+               }
+       }
+
+       return format;
+}
+
+/* create rtp payload type from asterisk format */
+static uint8_t lantiq_map_format_to_rtptype(const struct ast_format *format)
+{
+       uint8_t rtptype = 0;
+
+       if (ast_format_cmp(format, ast_format_ulaw) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_PCMU;
+       else if (ast_format_cmp(format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_PCMA;
+       else if (ast_format_cmp(format, ast_format_g722) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_G722;
+       else if (ast_format_cmp(format, ast_format_g726) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_G726;
+       else if (ast_format_cmp(format, ast_format_slin) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_SLIN8;
+       else if (ast_format_cmp(format, ast_format_slin16) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_SLIN16;
+       else if (ast_format_cmp(format, ast_format_ilbc) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_ILBC;
+       else if (ast_format_cmp(format, ast_format_siren7) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_SIREN7;
+       else if (ast_format_cmp(format, ast_format_g723) == AST_FORMAT_CMP_EQUAL)
+#if defined G723_HIGH_RATE
+               rtptype = RTP_G723_63;
+#else
+               rtptype = RTP_G723_53;
+#endif
+       else if (ast_format_cmp(format, ast_format_g729) == AST_FORMAT_CMP_EQUAL)
+               rtptype = RTP_G729;
+       else {
+               ast_log(LOG_ERROR, "unsupported format %s, forcing ulaw\n", ast_format_get_name(format));
+               rtptype = RTP_PCMU;
+       }
+
+       return rtptype;
+}
+
+static int lantiq_conf_enc(int c, const struct ast_format *format)
+{
+       /* Configure encoder before starting RTP session */
+       IFX_TAPI_ENC_CFG_t enc_cfg;
+
+       memset(&enc_cfg, 0, sizeof(IFX_TAPI_ENC_CFG_t));
+
+       if (ast_format_cmp(format, ast_format_ulaw) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_MLAW;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 10;
+       } else if (ast_format_cmp(format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_ALAW;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 10;
+       } else if (ast_format_cmp(format, ast_format_g722) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_G722_64;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 20;
+       } else if (ast_format_cmp(format, ast_format_g726) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_G726_32;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 10;
+       } else if (ast_format_cmp(format, ast_format_slin) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_LIN16_8;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 10;
+       } else if (ast_format_cmp(format, ast_format_slin16) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_LIN16_16;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_10;
+               iflist[c].ptime = 10;
+       } else if (ast_format_cmp(format, ast_format_ilbc) == AST_FORMAT_CMP_EQUAL) {
+               /* iLBC 15.2kbps is currently unsupported by Asterisk */
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_ILBC_133;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_30;
+               iflist[c].ptime = 30;
+       } else if (ast_format_cmp(format, ast_format_siren7) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_G7221_32;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 20;
+       } else if (ast_format_cmp(format, ast_format_g723) == AST_FORMAT_CMP_EQUAL) {
+#if defined G723_HIGH_RATE
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_G723_63;
+#else
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_G723_53;
+#endif
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_30;
+               iflist[c].ptime = 30;
+       } else if (ast_format_cmp(format, ast_format_g729) == AST_FORMAT_CMP_EQUAL) {
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_G729;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 10;
+       } else {
+               ast_log(LOG_ERROR, "unsupported format %s, forcing ulaw\n", ast_format_get_name(format));
+               enc_cfg.nEncType = IFX_TAPI_COD_TYPE_MLAW;
+               enc_cfg.nFrameLen = IFX_TAPI_COD_LENGTH_20;
+               iflist[c].ptime = 10;
+       }
+
+       ast_log(LOG_DEBUG, "Configuring encoder to use TAPI codec type %d (%s) on channel %i\n", enc_cfg.nEncType, ast_format_get_name(format), c);
+
+       if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_ENC_CFG_SET, &enc_cfg)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_ENC_CFG_SET %d failed\n", c);
+       }
+
+       if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_ENC_START, 0)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_ENC_START ioctl failed\n");
+       }
+
+       if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_DEC_START, 0)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_DEC_START ioctl failed\n");
+       }
+
+       return 0;
+}
+
+static int ast_lantiq_write(struct ast_channel *ast, struct ast_frame *frame)
+{
+       char buf[RTP_BUFFER_LEN];
+       rtp_header_t *rtp_header = (rtp_header_t *) buf;
+       struct lantiq_pvt *pvt = ast_channel_tech_pvt(ast);
+       int ret;
+       uint8_t rtptype;
+       int subframes, subframes_rtp, length, samples;
+       char *head, *tail;
+
+       if(frame->frametype != AST_FRAME_VOICE) {
+               ast_log(LOG_DEBUG, "unhandled frame type\n");
+               return 0;
+       }
+
+       if (frame->datalen == 0) {
+               ast_log(LOG_DEBUG, "we've been prodded\n");
+               return 0;
+       }
+
+       /* get rtp payload type */
+       rtptype = lantiq_map_format_to_rtptype(frame->subclass.format);
+
+       rtp_header->version      = 2;
+       rtp_header->padding      = 0;
+       rtp_header->extension    = 0;
+       rtp_header->csrc_count   = 0;
+       rtp_header->marker       = 0;
+       rtp_header->ssrc         = 0;
+       rtp_header->payload_type = rtptype;
+
+       subframes = (iflist[pvt->port_id].ptime + frame->len - 1) / iflist[pvt->port_id].ptime; /* number of subframes in AST frame */
+       if (subframes == 0)
+               subframes = 1;
+
+       subframes_rtp = (RTP_BUFFER_LEN - RTP_HEADER_LEN) * subframes / frame->datalen; /* how many frames fit in a single RTP packet */
+
+       /* By default stick to the maximum multiple of native frame length */
+       length = subframes_rtp * frame->datalen / subframes;
+       samples = length * frame->samples / frame->datalen;
+
+       head = frame->data.ptr;
+       tail = frame->data.ptr + frame->datalen;
+       while (head < tail) {
+               rtp_header->seqno        = pvt->rtp_seqno++;
+               rtp_header->timestamp    = pvt->rtp_timestamp;
+
+               if ((tail - head) < (RTP_BUFFER_LEN - RTP_HEADER_LEN)) {
+                       length = tail - head;
+                       samples = length * frame->samples / frame->datalen;
+               }
+
+               if ( frame->datalen <= (sizeof(buf) - RTP_HEADER_LEN) )
+                       memcpy(buf + RTP_HEADER_LEN, head, length);
+               else {
+                       ast_log(LOG_WARNING, "buffer is too small\n");
+                       return -1;
+               }
+
+               head += length;
+               pvt->rtp_timestamp += (rtp_header->payload_type == RTP_G722) ? samples / 2 : samples; /* per RFC3551 */
+
+               ret = write(dev_ctx.ch_fd[pvt->port_id], buf, RTP_HEADER_LEN + length);
+               if (ret < 0) {
+                       ast_debug(1, "TAPI: ast_lantiq_write(): error writing.\n");
+                       return -1;
+               }
+               if (ret != (RTP_HEADER_LEN + length)) {
+                       ast_log(LOG_WARNING, "Short TAPI write of %d bytes, expected %d bytes\n", ret, RTP_HEADER_LEN + length);
+                       continue;
+               }
+       }
+
+       return 0;
+}
+
+static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *args, char *buf, size_t buflen)
+{
+       struct lantiq_pvt *pvt;
+       int res = 0;
+
+       if (!chan || ast_channel_tech(chan) != &lantiq_tech) {
+               ast_log(LOG_ERROR, "This function requires a valid Lantiq TAPI channel\n");
+               return -1;
+       }
+
+       ast_mutex_lock(&iflock);
+
+       pvt = (struct lantiq_pvt*) ast_channel_tech_pvt(chan);
+
+       if (!strcasecmp(args, "csd")) {
+               snprintf(buf, buflen, "%lu", (unsigned long int) pvt->call_setup_delay);
+       } else if (!strcasecmp(args, "jitter_stats")){
+               lantiq_jb_get_stats(pvt->port_id);
+               snprintf(buf, buflen, "jbBufSize=%u,jbUnderflow=%u,jbOverflow=%u,jbDelay=%u,jbInvalid=%u",
+                               (uint32_t) pvt->jb_size,
+                               (uint32_t) pvt->jb_underflow,
+                               (uint32_t) pvt->jb_overflow,
+                               (uint32_t) pvt->jb_delay,
+                               (uint32_t) pvt->jb_invalid);
+       } else if (!strcasecmp(args, "jbBufSize")) {
+               snprintf(buf, buflen, "%u", (uint32_t) pvt->jb_size);
+       } else if (!strcasecmp(args, "jbUnderflow")) {
+               snprintf(buf, buflen, "%u", (uint32_t) pvt->jb_underflow);
+       } else if (!strcasecmp(args, "jbOverflow")) {
+               snprintf(buf, buflen, "%u", (uint32_t) pvt->jb_overflow);
+       } else if (!strcasecmp(args, "jbDelay")) {
+               snprintf(buf, buflen, "%u", (uint32_t) pvt->jb_delay);
+       } else if (!strcasecmp(args, "jbInvalid")) {
+               snprintf(buf, buflen, "%u", (uint32_t) pvt->jb_invalid);
+       } else if (!strcasecmp(args, "start")) {
+               struct tm *tm = gmtime((const time_t*)&pvt->call_start);
+               strftime(buf, buflen, "%F %T", tm);
+       } else if (!strcasecmp(args, "answer")) {
+               struct tm *tm = gmtime((const time_t*)&pvt->call_answer);
+               strftime(buf, buflen, "%F %T", tm);
+       } else {
+               res = -1;
+       }
+
+       ast_mutex_unlock(&iflock);
+
+       return res;
+}
+
+static struct ast_frame * ast_lantiq_exception(struct ast_channel *ast)
+{
+       ast_log(LOG_DEBUG, "entering... no code here...\n");
+       return NULL;
+}
+
+static void lantiq_jb_get_stats(int c) {
+       struct lantiq_pvt *pvt = &iflist[c];
+
+       IFX_TAPI_JB_STATISTICS_t param;
+       memset (&param, 0, sizeof (param));
+       if (ioctl (dev_ctx.ch_fd[c], IFX_TAPI_JB_STATISTICS_GET, (IFX_int32_t) &param) != IFX_SUCCESS) {
+               ast_debug(1, "Error getting jitter buffer  stats.\n");
+       } else {
+#if !defined (TAPI_VERSION3) && defined (TAPI_VERSION4)
+               ast_debug(1, "Jitter buffer stats:  dev=%u, ch=%u, nType=%u, nBufSize=%u, nIsUnderflow=%u, nDsOverflow=%u, nPODelay=%u, nInvalid=%u\n",
+                               (uint32_t) param.dev,
+                               (uint32_t) param.ch,
+#else
+               ast_debug(1, "Jitter buffer stats:  nType=%u, nBufSize=%u, nIsUnderflow=%u, nDsOverflow=%u, nPODelay=%u, nInvalid=%u\n",
+#endif
+                               (uint32_t) param.nType,
+                               (uint32_t) param.nBufSize,
+                               (uint32_t) param.nIsUnderflow,
+                               (uint32_t) param.nDsOverflow,
+                               (uint32_t) param.nPODelay,
+                               (uint32_t) param.nInvalid);
+
+               pvt->jb_size = param.nBufSize;
+               pvt->jb_underflow = param.nIsUnderflow;
+               pvt->jb_overflow = param.nDsOverflow;
+               pvt->jb_invalid = param.nInvalid;
+               pvt->jb_delay = param.nPODelay;
+       }
+}
+
+
+static int lantiq_standby(int c)
+{
+       ast_debug(1, "Stopping line feed for channel %i\n", c);
+       if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_LINE_FEED_SET, IFX_TAPI_LINE_FEED_STANDBY)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_LINE_FEED_SET ioctl failed\n");
+               return -1;
+       }
+
+       if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_ENC_STOP, 0)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_ENC_STOP ioctl failed\n");
+               return -1;
+       }
+
+       if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_DEC_STOP, 0)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_DEC_STOP ioctl failed\n");
+               return -1;
+       }
+
+       return lantiq_play_tone(c, TAPI_TONE_LOCALE_NONE);
+}
+
+static int lantiq_end_dialing(int c)
+{
+       struct lantiq_pvt *pvt = &iflist[c];
+
+       ast_log(LOG_DEBUG, "end of dialing\n");
+
+       if (pvt->dial_timer != -1) {
+               AST_SCHED_DEL(sched, pvt->dial_timer);
+               pvt->dial_timer = -1;
+       }
+
+       if(pvt->owner) {
+               ast_hangup(pvt->owner);
+       }
+       lantiq_reset_dtmfbuf(pvt);
+
+       return 0;
+}
+
+static int lantiq_end_call(int c)
+{
+       struct lantiq_pvt *pvt = &iflist[c];
+
+       ast_log(LOG_DEBUG, "end of call\n");
+
+       if(pvt->owner) {
+               lantiq_jb_get_stats(c);
+               ast_queue_hangup(pvt->owner);
+       }
+
+       return 0;
+}
+
+static struct ast_channel *lantiq_channel(int state, int c, char *ext, char *ctx, struct ast_format_cap *cap, const struct ast_assigned_ids *assigned_ids, const struct ast_channel *requestor)
+{
+       struct ast_channel *chan = NULL;
+       struct lantiq_pvt *pvt = &iflist[c];
+       struct ast_format *format = NULL;
+       struct ast_format_cap *newcap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
+       struct ast_format_cap *formatcap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
+
+       if (!newcap || !formatcap) {
+               ast_log(LOG_DEBUG, "Cannot allocate format capabilities!\n");
+               return NULL;
+       }
+
+       chan = ast_channel_alloc(1, state, NULL, NULL, "", ext, ctx, assigned_ids, requestor, c, "TAPI/%d", (c + 1));
+       if (!chan) {
+               ast_log(LOG_DEBUG, "Cannot allocate channel!\n");
+               ao2_ref(newcap, -1);
+               ao2_ref(formatcap, -1);
+               return NULL;
+       }
+
+       ast_channel_tech_set(chan, &lantiq_tech);
+       ast_channel_tech_pvt_set(chan, pvt);
+       pvt->owner = chan;
+
+       if (cap && ast_format_cap_iscompatible(cap, lantiq_tech.capabilities)) { /* compatible format capabilities given */
+               ast_format_cap_get_compatible(lantiq_tech.capabilities, cap, newcap);
+               format = ast_format_cap_get_format(newcap, 0); /* choose format */
+       } else { /* no or unsupported format capabilities given */
+               format = ast_format_cap_get_format(lantiq_tech.capabilities, 0); /* choose format from capabilities */
+       }
+
+       /* set choosed format */
+       ast_format_cap_append(formatcap, format, 0);
+       ast_channel_nativeformats_set(chan, formatcap);
+       ast_channel_set_readformat(chan, format);
+       ast_channel_set_writeformat(chan, format);
+       ast_channel_set_rawreadformat(chan, format);
+       ast_channel_set_rawwriteformat(chan, format);
+
+       ao2_ref(newcap, -1);
+       ao2_ref(formatcap, -1);
+
+       /* configuring encoder */
+       if (format != 0)
+               if (lantiq_conf_enc(c, format) < 0)
+                       return NULL;
+
+       return chan;
+}
+
+static struct ast_channel *ast_lantiq_requester(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assigned_ids, const struct ast_channel *requestor, const char *data, int *cause)
+{
+       struct ast_str *buf = ast_str_alloca(64);
+       struct ast_channel *chan = NULL;
+       int port_id = -1;
+
+       ast_mutex_lock(&iflock);
+
+       ast_debug(1, "Asked to create a TAPI channel with formats: %s\n", ast_format_cap_get_names(cap, &buf));
+
+       /* check for correct data argument */
+       if (ast_strlen_zero(data)) {
+               ast_log(LOG_ERROR, "Unable to create channel with empty destination.\n");
+               *cause = AST_CAUSE_CHANNEL_UNACCEPTABLE;
+               goto bailout;
+       }
+
+       /* get our port number */
+       port_id = atoi((char*) data);
+       if (port_id < 1 || port_id > dev_ctx.channels) {
+               ast_log(LOG_ERROR, "Unknown channel ID: \"%s\"\n", data);
+               *cause = AST_CAUSE_CHANNEL_UNACCEPTABLE;
+               goto bailout;
+       }
+
+       /* on asterisk user's side, we're using port 1-2.
+        * Here in non normal human's world, we begin
+        * counting at 0.
+        */
+       port_id -= 1;
+
+
+       /* Bail out if channel is already in use */
+       struct lantiq_pvt *pvt = &iflist[port_id];
+       if (! pvt->channel_state == ONHOOK) {
+               ast_debug(1, "TAPI channel %i alread in use.\n", port_id+1);
+       } else {
+               chan = lantiq_channel(AST_STATE_DOWN, port_id, NULL, NULL, cap, assigned_ids, requestor);
+               ast_channel_unlock(chan);  /* it's essential to unlock channel */
+       }
+
+bailout:
+       ast_mutex_unlock(&iflock);
+       return chan;
+}
+
+static int ast_lantiq_devicestate(const char *data)
+{
+       int port = atoi(data) - 1;
+       if ((port < 1) || (port > dev_ctx.channels)) {
+               return AST_DEVICE_INVALID;
+       }
+
+       switch (iflist[port].channel_state) {
+               case ONHOOK:
+                       return AST_DEVICE_NOT_INUSE;
+               case OFFHOOK:
+               case DIALING:
+               case INCALL:
+               case CALL_ENDED:
+                       return AST_DEVICE_INUSE;
+               case RINGING:
+                       return AST_DEVICE_RINGING;
+               case UNKNOWN:
+               default:
+                       return AST_DEVICE_UNKNOWN;
+       }
+}
+
+static int lantiq_dev_data_handler(int c)
+{
+       char buf[BUFSIZ];
+       struct ast_frame frame = {0};
+       struct ast_format *format = NULL;
+
+       int res = read(dev_ctx.ch_fd[c], buf, sizeof(buf));
+       if (res <= 0) {
+               ast_log(LOG_ERROR, "we got read error %i\n", res);
+               return -1;
+       } else if (res < RTP_HEADER_LEN) {
+               ast_log(LOG_ERROR, "we got data smaller than header size\n");
+               return -1;
+       }
+
+       rtp_header_t *rtp = (rtp_header_t*) buf;
+       struct lantiq_pvt *pvt = (struct lantiq_pvt *) &iflist[c];
+       if ((!pvt->owner) || (ast_channel_state(pvt->owner) != AST_STATE_UP)) {
+               return 0;
+       }
+
+       if (rtp->payload_type == RTP_CN) {
+               /* TODO: Handle Comfort Noise frames */
+               ast_debug(1, "Dropping Comfort Noise frame\n");
+       }
+
+       format = lantiq_map_rtptype_to_format(rtp->payload_type);
+       frame.src = "TAPI";
+       frame.frametype = AST_FRAME_VOICE;
+       frame.subclass.format = format;
+       frame.datalen = res - RTP_HEADER_LEN;
+       frame.data.ptr = buf + RTP_HEADER_LEN;
+       frame.samples = ast_codec_samples_count(&frame);
+
+       if(!ast_channel_trylock(pvt->owner)) {
+               ast_queue_frame(pvt->owner, &frame);
+               ast_channel_unlock(pvt->owner);
+       }
+
+       return 0;
+}
+
+static int accept_call(int c)
+{
+       struct lantiq_pvt *pvt = &iflist[c];
+
+       ast_log(LOG_DEBUG, "accept call\n");
+
+       if (pvt->owner) {
+               struct ast_channel *chan = pvt->owner;
+
+               switch (ast_channel_state(chan)) {
+                       case AST_STATE_RINGING:
+                               lantiq_play_tone(c, TAPI_TONE_LOCALE_NONE);
+                               ast_queue_control(pvt->owner, AST_CONTROL_ANSWER);
+                               pvt->channel_state = INCALL;
+                               pvt->call_start = epoch();
+                               pvt->call_answer = pvt->call_start;
+                               break;
+                       default:
+                               ast_log(LOG_WARNING, "entered unhandled state %s\n", ast_state2str(ast_channel_state(chan)));
+               }
+       }
+
+       return 0;
+}
+
+static int lantiq_dev_event_hook(int c, int state)
+{
+       ast_mutex_lock(&iflock);
+
+       ast_log(LOG_DEBUG, "on port %i detected event %s hook\n", c, state ? "on" : "off");
+
+       struct lantiq_pvt *pvt = &iflist[c];
+
+       int ret = -1;
+       if (state) { /* going onhook */
+               switch (iflist[c].channel_state) {
+                       case DIALING:
+                               ret = lantiq_end_dialing(c);
+                               break;
+                       case INCALL:
+                               ret = lantiq_end_call(c);
+                               break;
+               }
+
+               iflist[c].channel_state = ONHOOK;
+
+               /* stop DSP data feed */
+               lantiq_standby(c);
+               led_off(dev_ctx.ch_led[c]);
+
+       } else { /* going offhook */
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_LINE_FEED_SET, IFX_TAPI_LINE_FEED_ACTIVE)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_LINE_FEED_SET ioctl failed\n");
+                       goto out;
+               }
+
+               switch (iflist[c].channel_state) {
+                       case RINGING:
+                               ret = accept_call(c);
+                               led_blink(dev_ctx.ch_led[c], LED_SLOW_BLINK);
+                               break;
+                       default:
+                               iflist[c].channel_state = OFFHOOK;
+                               lantiq_play_tone(c, TAPI_TONE_LOCALE_DIAL_CODE);
+                               lantiq_reset_dtmfbuf(pvt);
+                               ret = 0;
+                               led_on(dev_ctx.ch_led[c]);
+                               break;
+               }
+
+       }
+
+out:
+       ast_mutex_unlock(&iflock);
+
+       return ret;
+}
+
+static void lantiq_reset_dtmfbuf(struct lantiq_pvt *pvt)
+{
+       pvt->dtmfbuf[0] = '\0';
+       pvt->dtmfbuf_len = 0;
+}
+
+static void lantiq_dial(struct lantiq_pvt *pvt)
+{
+       struct ast_channel *chan = NULL;
+
+       ast_mutex_lock(&iflock);
+       ast_log(LOG_DEBUG, "user want's to dial %s.\n", pvt->dtmfbuf);
+
+       if (ast_exists_extension(NULL, pvt->context, pvt->dtmfbuf, 1, NULL)) {
+               ast_debug(1, "found extension %s, dialing\n", pvt->dtmfbuf);
+
+               ast_verbose(VERBOSE_PREFIX_3 " extension exists, starting PBX %s\n", pvt->dtmfbuf);
+
+               chan = lantiq_channel(AST_STATE_UP, pvt->port_id, pvt->dtmfbuf, pvt->context, NULL, 0, NULL);
+               if (!chan) {
+                       ast_log(LOG_ERROR, "couldn't create channel\n");
+                       goto bailout;
+               }
+               ast_channel_tech_pvt_set(chan, pvt);
+               pvt->owner = chan;
+
+               ast_setstate(chan, AST_STATE_RING);
+               pvt->channel_state = INCALL;
+
+               pvt->call_setup_start = now();
+               pvt->call_start = epoch();
+
+               if (ast_pbx_start(chan)) {
+                       ast_log(LOG_WARNING, " unable to start PBX on %s\n", ast_channel_name(chan));
+                       ast_hangup(chan);
+               }
+
+               ast_channel_unlock(chan); /* it's essential to unlock channel */
+       } else {
+               ast_log(LOG_DEBUG, "no extension found\n");
+               lantiq_play_tone(pvt->port_id, TAPI_TONE_LOCALE_CONGESTION_CODE);
+               pvt->channel_state = CALL_ENDED;
+       }
+
+       lantiq_reset_dtmfbuf(pvt);
+bailout:
+       ast_mutex_unlock(&iflock);
+}
+
+static int lantiq_event_dial_timeout(const void* data)
+{
+       ast_debug(1, "TAPI: lantiq_event_dial_timeout()\n");
+
+       struct lantiq_pvt *pvt = (struct lantiq_pvt *) data;
+       pvt->dial_timer = -1;
+
+       if (! pvt->channel_state == ONHOOK) {
+               lantiq_dial(pvt);
+       } else {
+               ast_debug(1, "TAPI: lantiq_event_dial_timeout(): dial timeout in state ONHOOK.\n");
+       }
+
+       return 0;
+}
+
+static int lantiq_send_digit(int c, char digit)
+{
+       struct lantiq_pvt *pvt = &iflist[c];
+
+       struct ast_frame f = { .frametype = AST_FRAME_DTMF, .subclass.integer = digit };
+
+       if (pvt->owner) {
+               ast_log(LOG_DEBUG, "Port %i transmitting digit \"%c\"\n", c, digit);
+               return ast_queue_frame(pvt->owner, &f);
+       } else {
+               ast_debug(1, "Warning: lantiq_send_digit() without owner!\n");
+               return -1;
+       }
+}
+
+static void lantiq_dev_event_digit(int c, char digit)
+{
+       ast_mutex_lock(&iflock);
+
+       ast_log(LOG_DEBUG, "on port %i detected digit \"%c\"\n", c, digit);
+
+       struct lantiq_pvt *pvt = &iflist[c];
+
+       switch (pvt->channel_state) {
+               case INCALL:
+                       lantiq_send_digit(c, digit);
+                       break;
+               case OFFHOOK:
+                       pvt->channel_state = DIALING;
+
+                       lantiq_play_tone(c, TAPI_TONE_LOCALE_NONE);
+                       led_blink(dev_ctx.ch_led[c], LED_SLOW_BLINK);
+
+                       /* fall through */
+               case DIALING:
+                       if (pvt->dtmfbuf_len < AST_MAX_EXTENSION - 1) {
+                               pvt->dtmfbuf[pvt->dtmfbuf_len] = digit;
+                               pvt->dtmfbuf[++pvt->dtmfbuf_len] = '\0';
+                       } else {
+                               /* No more room for another digit */
+                               lantiq_end_dialing(c);
+                               lantiq_play_tone(pvt->port_id, TAPI_TONE_LOCALE_BUSY_CODE);
+                               pvt->channel_state = CALL_ENDED;
+                               break;
+                       }
+
+                       /* setup autodial timer */
+                       if (pvt->dial_timer == -1) {
+                               ast_log(LOG_DEBUG, "setting new timer\n");
+                               pvt->dial_timer = ast_sched_add(sched, dev_ctx.interdigit_timeout, lantiq_event_dial_timeout, (const void*) pvt);
+                       } else {
+                               ast_log(LOG_DEBUG, "replacing timer\n");
+                               AST_SCHED_REPLACE(pvt->dial_timer, sched, dev_ctx.interdigit_timeout, lantiq_event_dial_timeout, (const void*) pvt);
+                       }
+                       break;
+               default:
+                       ast_log(LOG_ERROR, "don't know what to do in unhandled state\n");
+                       break;
+       }
+
+       ast_mutex_unlock(&iflock);
+       return;
+}
+
+static void lantiq_dev_event_handler(void)
+{
+       IFX_TAPI_EVENT_t event;
+       unsigned int i;
+
+       for (i = 0; i < dev_ctx.channels ; i++) {
+               ast_mutex_lock(&iflock);
+
+               memset (&event, 0, sizeof(event));
+               event.ch = i;
+               if (ioctl(dev_ctx.dev_fd, IFX_TAPI_EVENT_GET, &event)) {
+                       ast_mutex_unlock(&iflock);
+                       continue;
+               }
+               if (event.id == IFX_TAPI_EVENT_NONE) {
+                       ast_mutex_unlock(&iflock);
+                       continue;
+               }
+
+               ast_mutex_unlock(&iflock);
+
+               switch(event.id) {
+                       case IFX_TAPI_EVENT_FXS_ONHOOK:
+                               lantiq_dev_event_hook(i, 1);
+                               break;
+                       case IFX_TAPI_EVENT_FXS_OFFHOOK:
+                               lantiq_dev_event_hook(i, 0);
+                               break;
+                       case IFX_TAPI_EVENT_DTMF_DIGIT:
+                               lantiq_dev_event_digit(i, (char)event.data.dtmf.ascii);
+                               break;
+                       case IFX_TAPI_EVENT_PULSE_DIGIT:
+                               if (event.data.pulse.digit == 0xB) {
+                                       lantiq_dev_event_digit(i, '0');
+                               } else {
+                                       lantiq_dev_event_digit(i, '0' + (char)event.data.pulse.digit);
+                               }
+                               break;
+                       case IFX_TAPI_EVENT_COD_DEC_CHG:
+                       case IFX_TAPI_EVENT_TONE_GEN_END:
+                       case IFX_TAPI_EVENT_CID_TX_SEQ_END:
+                               break;
+                       default:
+                               ast_log(LOG_ERROR, "Unknown TAPI event %08X. Restarting Asterisk...\n", event.id);
+                               sleep(1);
+                               ast_cli_command(-1, "core restart now");
+                               break;
+               }
+       }
+}
+
+static void * lantiq_events_monitor(void *data)
+{
+       ast_verbose("TAPI thread started\n");
+
+       struct pollfd fds[TAPI_AUDIO_PORT_NUM_MAX + 1];
+       int c;
+
+       fds[0].fd = dev_ctx.dev_fd;
+       fds[0].events = POLLIN;
+       for (c = 0; c < dev_ctx.channels; c++) {
+               fds[c + 1].fd = dev_ctx.ch_fd[c];
+               fds[c + 1].events = POLLIN;
+       }
+
+       pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
+       for (;;) {
+               if (poll(fds, dev_ctx.channels + 1, 2000) <= 0) {
+                       continue;
+               }
+
+               ast_mutex_lock(&monlock);
+               if (fds[0].revents & POLLIN) {
+                       lantiq_dev_event_handler();
+               }
+
+               for (c = 0; c < dev_ctx.channels; c++) {
+                       if ((fds[c + 1].revents & POLLIN) && (lantiq_dev_data_handler(c))) {
+                               ast_log(LOG_ERROR, "data handler %d failed\n", c);
+                               break;
+                       }
+               }
+               ast_mutex_unlock(&monlock);
+       }
+
+       return NULL;
+}
+
+static int restart_monitor(void)
+{
+       /* If we're supposed to be stopped -- stay stopped */
+       if (monitor_thread == AST_PTHREADT_STOP)
+               return 0;
+
+       ast_mutex_lock(&monlock);
+
+       if (monitor_thread == pthread_self()) {
+               ast_mutex_unlock(&monlock);
+               ast_log(LOG_WARNING, "Cannot kill myself\n");
+               return -1;
+       }
+
+       if (monitor_thread != AST_PTHREADT_NULL) {
+               /* Wake up the thread */
+               pthread_kill(monitor_thread, SIGURG);
+       } else {
+               /* Start a new monitor */
+               if (ast_pthread_create_background(&monitor_thread, NULL, lantiq_events_monitor, NULL) < 0) {
+                       ast_mutex_unlock(&monlock);
+                       ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
+                       return -1;
+               }
+       }
+       ast_mutex_unlock(&monlock);
+
+       return 0;
+}
+
+static void lantiq_cleanup(void)
+{
+       int c;
+
+       if (dev_ctx.dev_fd < 0) {
+               return;
+       }
+
+       for (c = 0; c < dev_ctx.channels ; c++) {
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_LINE_FEED_SET, IFX_TAPI_LINE_FEED_STANDBY)) {
+                       ast_log(LOG_WARNING, "IFX_TAPI_LINE_FEED_SET ioctl failed\n");
+               }
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_ENC_STOP, 0)) {
+                       ast_log(LOG_WARNING, "IFX_TAPI_ENC_STOP ioctl failed\n");
+               }
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_DEC_STOP, 0)) {
+                       ast_log(LOG_WARNING, "IFX_TAPI_DEC_STOP ioctl failed\n");
+               }
+               led_off(dev_ctx.ch_led[c]);
+       }
+
+       if (ioctl(dev_ctx.dev_fd, IFX_TAPI_DEV_STOP, 0)) {
+               ast_log(LOG_WARNING, "IFX_TAPI_DEV_STOP ioctl failed\n");
+       }
+
+       close(dev_ctx.dev_fd);
+       dev_ctx.dev_fd = -1;
+       led_off(dev_ctx.voip_led);
+}
+
+static int unload_module(void)
+{
+       int c;
+
+       ast_channel_unregister(&lantiq_tech);
+
+       if (ast_mutex_lock(&iflock)) {
+               ast_log(LOG_WARNING, "Unable to lock the interface list\n");
+               return -1;
+       }
+       for (c = 0; c < dev_ctx.channels ; c++) {
+               if (iflist[c].owner)
+                       ast_softhangup(iflist[c].owner, AST_SOFTHANGUP_APPUNLOAD);
+       }
+       ast_mutex_unlock(&iflock);
+
+       if (ast_mutex_lock(&monlock)) {
+               ast_log(LOG_WARNING, "Unable to lock the monitor\n");
+               return -1;
+       }
+       if (monitor_thread && (monitor_thread != AST_PTHREADT_STOP) && (monitor_thread != AST_PTHREADT_NULL)) {
+               pthread_t th = monitor_thread;
+               monitor_thread = AST_PTHREADT_STOP;
+               pthread_cancel(th);
+               pthread_kill(th, SIGURG);
+               ast_mutex_unlock(&monlock);
+               pthread_join(th, NULL);
+       } else {
+               monitor_thread = AST_PTHREADT_STOP;
+               ast_mutex_unlock(&monlock);
+       }
+
+       ast_sched_context_destroy(sched);
+       ast_mutex_destroy(&iflock);
+       ast_mutex_destroy(&monlock);
+
+       lantiq_cleanup();
+       ast_free(iflist);
+
+       return 0;
+}
+
+static struct lantiq_pvt *lantiq_init_pvt(struct lantiq_pvt *pvt)
+{
+       if (pvt) {
+               pvt->owner = NULL;
+               pvt->port_id = -1;
+               pvt->channel_state = UNKNOWN;
+               pvt->context[0] = '\0';
+               pvt->dial_timer = -1;
+               pvt->dtmfbuf[0] = '\0';
+               pvt->dtmfbuf_len = 0;
+               pvt->call_setup_start = 0;
+               pvt->call_setup_delay = 0;
+               pvt->call_answer = 0;
+               pvt->jb_size = 0;
+               pvt->jb_underflow = 0;
+               pvt->jb_overflow = 0;
+               pvt->jb_delay = 0;
+               pvt->jb_invalid = 0;
+       } else {
+               ast_log(LOG_ERROR, "unable to clear pvt structure\n");
+       }
+
+       return pvt;
+}
+
+static int lantiq_create_pvts(void)
+{
+       int i;
+
+       iflist = ast_calloc(1, sizeof(struct lantiq_pvt) * dev_ctx.channels);
+
+       if (!iflist) {
+               ast_log(LOG_ERROR, "unable to allocate memory\n");
+               return -1;
+       }
+
+       for (i = 0; i < dev_ctx.channels; i++) {
+               lantiq_init_pvt(&iflist[i]);
+               iflist[i].port_id = i;
+               if (per_channel_context) {
+                       snprintf(iflist[i].context, AST_MAX_CONTEXT, "%s%i", LANTIQ_CONTEXT_PREFIX, i + 1);
+                       ast_debug(1, "Context for channel %i: %s\n", i, iflist[i].context);
+               } else {
+                       snprintf(iflist[i].context, AST_MAX_CONTEXT, "default");
+               }
+       }
+       return 0;
+}
+
+static int lantiq_setup_rtp(int c)
+{
+       /* Configure RTP payload type tables */
+       IFX_TAPI_PKT_RTP_PT_CFG_t rtpPTConf;
+
+       memset((char*)&rtpPTConf, '\0', sizeof(rtpPTConf));
+
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_G723_63] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_G723_63] = RTP_G723_63;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_G723_53] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_G723_53] = RTP_G723_53;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_G729] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_G729] = RTP_G729;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_MLAW] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_MLAW] = RTP_PCMU;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_ALAW] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_ALAW] = RTP_PCMA;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_G726_32] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_G726_32] = RTP_G726;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_ILBC_152] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_ILBC_152] = RTP_ILBC;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_LIN16_8] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_LIN16_8] = RTP_SLIN8;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_LIN16_16] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_LIN16_16] = RTP_SLIN16;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_G722_64] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_G722_64] = RTP_G722;
+       rtpPTConf.nPTup[IFX_TAPI_COD_TYPE_G7221_32] = rtpPTConf.nPTdown[IFX_TAPI_COD_TYPE_G7221_32] = RTP_G7221;
+
+       int ret;
+       if ((ret = ioctl(dev_ctx.ch_fd[c], IFX_TAPI_PKT_RTP_PT_CFG_SET, (IFX_int32_t) &rtpPTConf))) {
+               ast_log(LOG_ERROR, "IFX_TAPI_PKT_RTP_PT_CFG_SET failed: ret=%i\n", ret);
+               return -1;
+       }
+
+       return 0;
+}
+
+static int load_module(void)
+{
+       struct ast_config *cfg;
+       struct ast_variable *v;
+       int txgain = 0;
+       int rxgain = 0;
+       int wlec_type = 0;
+       int wlec_nlp = 0;
+       int wlec_nbfe = 0;
+       int wlec_nbne = 0;
+       int wlec_wbne = 0;
+       int jb_type = IFX_TAPI_JB_TYPE_ADAPTIVE;
+       int jb_pckadpt = IFX_TAPI_JB_PKT_ADAPT_VOICE;
+       int jb_localadpt = IFX_TAPI_JB_LOCAL_ADAPT_DEFAULT;
+       int jb_scaling = 0x10;
+       int jb_initialsize = 0x2d0;
+       int jb_minsize = 0x50;
+       int jb_maxsize = 0x5a0;
+       int cid_type = IFX_TAPI_CID_STD_TELCORDIA;
+       int vad_type = IFX_TAPI_ENC_VAD_NOVAD;
+       dev_ctx.dev_fd = -1;
+       dev_ctx.channels = TAPI_AUDIO_PORT_NUM_MAX;
+       dev_ctx.interdigit_timeout = DEFAULT_INTERDIGIT_TIMEOUT;
+       struct ast_tone_zone *tz;
+       struct ast_flags config_flags = { 0 };
+       int c;
+
+       if(!(lantiq_tech.capabilities = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
+         ast_log(LOG_ERROR, "Unable to allocate format capabilities.\n");
+         return AST_MODULE_LOAD_DECLINE;
+       }
+
+       /* channel format capabilities */
+       ast_format_cap_append(lantiq_tech.capabilities, ast_format_ulaw, 0);
+       ast_format_cap_append(lantiq_tech.capabilities, ast_format_alaw, 0);
+       ast_format_cap_append(lantiq_tech.capabilities, ast_format_g722, 0);
+       ast_format_cap_append(lantiq_tech.capabilities, ast_format_g726, 0);
+       ast_format_cap_append(lantiq_tech.capabilities, ast_format_slin, 0);
+
+       /* Turn off the LEDs, just in case */
+       led_off(dev_ctx.voip_led);
+       for(c = 0; c < TAPI_AUDIO_PORT_NUM_MAX; c++)
+               led_off(dev_ctx.ch_led[c]);
+
+       if ((cfg = ast_config_load(config, config_flags)) == CONFIG_STATUS_FILEINVALID) {
+               ast_log(LOG_ERROR, "Config file %s is in an invalid format.  Aborting.\n", config);
+               return AST_MODULE_LOAD_DECLINE;
+       }
+
+       /* We *must* have a config file otherwise stop immediately */
+       if (!cfg) {
+               ast_log(LOG_ERROR, "Unable to load config %s\n", config);
+               return AST_MODULE_LOAD_DECLINE;
+       }
+
+       if (ast_mutex_lock(&iflock)) {
+               ast_log(LOG_ERROR, "Unable to lock interface list.\n");
+               goto cfg_error;
+       }
+
+       for (v = ast_variable_browse(cfg, "interfaces"); v; v = v->next) {
+               if (!strcasecmp(v->name, "channels")) {
+                       dev_ctx.channels = atoi(v->value);
+                       if (!dev_ctx.channels) {
+                               ast_log(LOG_ERROR, "Invalid value for channels in config %s\n", config);
+                               goto cfg_error_il;
+                       }
+               } else if (!strcasecmp(v->name, "firmwarefilename")) {
+                       ast_copy_string(firmware_filename, v->value, sizeof(firmware_filename));
+               } else if (!strcasecmp(v->name, "bbdfilename")) {
+                       ast_copy_string(bbd_filename, v->value, sizeof(bbd_filename));
+               } else if (!strcasecmp(v->name, "basepath")) {
+                       ast_copy_string(base_path, v->value, sizeof(base_path));
+               } else if (!strcasecmp(v->name, "per_channel_context")) {
+                       if (!strcasecmp(v->value, "on")) {
+                               per_channel_context = 1;
+                       } else if (!strcasecmp(v->value, "off")) {
+                               per_channel_context = 0;
+                       } else {
+                               ast_log(LOG_ERROR, "Unknown per_channel_context value '%s'. Try 'on' or 'off'.\n", v->value);
+                               goto cfg_error_il;
+                       }
+               }
+       }
+
+       for (v = ast_variable_browse(cfg, "general"); v; v = v->next) {
+               if (!strcasecmp(v->name, "rxgain")) {
+                       rxgain = atoi(v->value);
+                       if (!rxgain) {
+                               rxgain = 0;
+                               ast_log(LOG_WARNING, "Invalid rxgain: %s, using default.\n", v->value);
+                       }
+               } else if (!strcasecmp(v->name, "txgain")) {
+                       txgain = atoi(v->value);
+                       if (!txgain) {
+                               txgain = 0;
+                               ast_log(LOG_WARNING, "Invalid txgain: %s, using default.\n", v->value);
+                       }
+               } else if (!strcasecmp(v->name, "echocancel")) {
+                       if (!strcasecmp(v->value, "off")) {
+                               wlec_type = IFX_TAPI_WLEC_TYPE_OFF;
+                       } else if (!strcasecmp(v->value, "nlec")) {
+                               wlec_type = IFX_TAPI_WLEC_TYPE_NE;
+                               if (!strcasecmp(v->name, "echocancelfixedwindowsize")) {
+                                       wlec_nbne = atoi(v->value);
+                               }
+                       } else if (!strcasecmp(v->value, "wlec")) {
+                               wlec_type = IFX_TAPI_WLEC_TYPE_NFE;
+                               if (!strcasecmp(v->name, "echocancelnfemovingwindowsize")) {
+                                       wlec_nbfe = atoi(v->value);
+                               } else if (!strcasecmp(v->name, "echocancelfixedwindowsize")) {
+                                       wlec_nbne = atoi(v->value);
+                               } else if (!strcasecmp(v->name, "echocancelwidefixedwindowsize")) {
+                                       wlec_wbne = atoi(v->value);
+                               }
+                       } else if (!strcasecmp(v->value, "nees")) {
+                               wlec_type = IFX_TAPI_WLEC_TYPE_NE_ES;
+                       } else if (!strcasecmp(v->value, "nfees")) {
+                               wlec_type = IFX_TAPI_WLEC_TYPE_NFE_ES;
+                       } else if (!strcasecmp(v->value, "es")) {
+                               wlec_type = IFX_TAPI_WLEC_TYPE_ES;
+                       } else {
+                               wlec_type = IFX_TAPI_WLEC_TYPE_OFF;
+                               ast_log(LOG_ERROR, "Unknown echo cancellation type '%s'\n", v->value);
+                               goto cfg_error_il;
+                       }
+               } else if (!strcasecmp(v->name, "echocancelnlp")) {
+                       if (!strcasecmp(v->value, "on")) {
+                               wlec_nlp = IFX_TAPI_WLEC_NLP_ON;
+                       } else if (!strcasecmp(v->value, "off")) {
+                               wlec_nlp = IFX_TAPI_WLEC_NLP_OFF;
+                       } else {
+                               ast_log(LOG_ERROR, "Unknown echo cancellation nlp '%s'\n", v->value);
+                               goto cfg_error_il;
+                       }
+               } else if (!strcasecmp(v->name, "jitterbuffertype")) {
+                       if (!strcasecmp(v->value, "fixed")) {
+                               jb_type = IFX_TAPI_JB_TYPE_FIXED;
+                       } else if (!strcasecmp(v->value, "adaptive")) {
+                               jb_type = IFX_TAPI_JB_TYPE_ADAPTIVE;
+                               jb_localadpt = IFX_TAPI_JB_LOCAL_ADAPT_DEFAULT;
+                               if (!strcasecmp(v->name, "jitterbufferadaptation")) {
+                                       if (!strcasecmp(v->value, "on")) {
+                                               jb_localadpt = IFX_TAPI_JB_LOCAL_ADAPT_ON;
+                                       } else if (!strcasecmp(v->value, "off")) {
+                                               jb_localadpt = IFX_TAPI_JB_LOCAL_ADAPT_OFF;
+                                       }
+                               } else if (!strcasecmp(v->name, "jitterbufferscalling")) {
+                                       jb_scaling = atoi(v->value);
+                               } else if (!strcasecmp(v->name, "jitterbufferinitialsize")) {
+                                       jb_initialsize = atoi(v->value);
+                               } else if (!strcasecmp(v->name, "jitterbufferminsize")) {
+                                       jb_minsize = atoi(v->value);
+                               } else if (!strcasecmp(v->name, "jitterbuffermaxsize")) {
+                                       jb_maxsize = atoi(v->value);
+                               }
+                       } else {
+                               ast_log(LOG_ERROR, "Unknown jitter buffer type '%s'\n", v->value);
+                               goto cfg_error_il;
+                       }
+               } else if (!strcasecmp(v->name, "jitterbufferpackettype")) {
+                       if (!strcasecmp(v->value, "voice")) {
+                               jb_pckadpt = IFX_TAPI_JB_PKT_ADAPT_VOICE;
+                       } else if (!strcasecmp(v->value, "data")) {
+                               jb_pckadpt = IFX_TAPI_JB_PKT_ADAPT_DATA;
+                       } else if (!strcasecmp(v->value, "datanorep")) {
+                               jb_pckadpt = IFX_TAPI_JB_PKT_ADAPT_DATA_NO_REP;
+                       } else {
+                               ast_log(LOG_ERROR, "Unknown jitter buffer packet adaptation type '%s'\n", v->value);
+                               goto cfg_error_il;
+                       }
+               } else if (!strcasecmp(v->name, "calleridtype")) {
+                       ast_log(LOG_DEBUG, "Setting CID type to %s.\n", v->value);
+                       if (!strcasecmp(v->value, "telecordia")) {
+                               cid_type = IFX_TAPI_CID_STD_TELCORDIA;
+                       } else if (!strcasecmp(v->value, "etsifsk")) {
+                               cid_type = IFX_TAPI_CID_STD_ETSI_FSK;
+                       } else if (!strcasecmp(v->value, "etsidtmf")) {
+                               cid_type = IFX_TAPI_CID_STD_ETSI_DTMF;
+                       } else if (!strcasecmp(v->value, "sin")) {
+                               cid_type = IFX_TAPI_CID_STD_SIN;
+                       } else if (!strcasecmp(v->value, "ntt")) {
+                               cid_type = IFX_TAPI_CID_STD_NTT;
+                       } else if (!strcasecmp(v->value, "kpndtmf")) {
+                               cid_type = IFX_TAPI_CID_STD_KPN_DTMF;
+                       } else if (!strcasecmp(v->value, "kpndtmffsk")) {
+                               cid_type = IFX_TAPI_CID_STD_KPN_DTMF_FSK;
+                       } else {
+                               ast_log(LOG_ERROR, "Unknown caller id type '%s'\n", v->value);
+                               goto cfg_error_il;
+                       }
+               } else if (!strcasecmp(v->name, "voiceactivitydetection")) {
+                       if (!strcasecmp(v->value, "on")) {
+                               vad_type = IFX_TAPI_ENC_VAD_ON;
+                       } else if (!strcasecmp(v->value, "g711")) {
+                               vad_type = IFX_TAPI_ENC_VAD_G711;
+                       } else if (!strcasecmp(v->value, "cng")) {
+                               vad_type = IFX_TAPI_ENC_VAD_CNG_ONLY;
+                       } else if (!strcasecmp(v->value, "sc")) {
+                               vad_type = IFX_TAPI_ENC_VAD_SC_ONLY;
+                       } else {
+                               ast_log(LOG_ERROR, "Unknown voice activity detection value '%s'\n", v->value);
+                               goto cfg_error_il;
+                       }
+               } else if (!strcasecmp(v->name, "interdigit")) {
+                       dev_ctx.interdigit_timeout = atoi(v->value);
+                       ast_log(LOG_DEBUG, "Setting interdigit timeout to %s.\n", v->value);
+                       if (!dev_ctx.interdigit_timeout) {
+                               dev_ctx.interdigit_timeout = DEFAULT_INTERDIGIT_TIMEOUT;
+                               ast_log(LOG_WARNING, "Invalid interdigit timeout: %s, using default.\n", v->value);
+                       }
+               } else if (!strcasecmp(v->name, "tone_generator")) {
+                       if (!strcasecmp(v->value, "integrated")) {
+                               tone_generator = TONE_INTEGRATED;
+                       } else if (!strcasecmp(v->value, "asterisk")) {
+                               tone_generator = TONE_ASTERISK;
+                       } else if (!strcasecmp(v->value, "media")) {
+                               tone_generator = TONE_MEDIA;
+                       } else {
+                               ast_log(LOG_ERROR, "Unknown tone_generator value '%s'. Try 'integrated', 'asterisk' or 'media'.\n", v->value);
+                               goto cfg_error_il;
+                       }
+               }
+       }
+
+       lantiq_create_pvts();
+
+       ast_mutex_unlock(&iflock);
+       ast_config_destroy(cfg);
+
+       if (!(sched = ast_sched_context_create())) {
+               ast_log(LOG_ERROR, "Unable to create scheduler context\n");
+               goto load_error;
+       }
+
+       if (ast_sched_start_thread(sched)) {
+               ast_log(LOG_ERROR, "Unable to create scheduler context thread\n");
+               goto load_error_st;
+       }
+
+       if (ast_channel_register(&lantiq_tech)) {
+               ast_log(LOG_ERROR, "Unable to register channel class 'Phone'\n");
+               goto load_error_st;
+       }
+
+       /* tapi */
+       IFX_TAPI_TONE_t tone;
+       IFX_TAPI_DEV_START_CFG_t dev_start;
+       IFX_TAPI_MAP_DATA_t map_data;
+       IFX_TAPI_LINE_TYPE_CFG_t line_type;
+       IFX_TAPI_LINE_VOLUME_t line_vol;
+       IFX_TAPI_WLEC_CFG_t wlec_cfg;
+       IFX_TAPI_JB_CFG_t jb_cfg;
+       IFX_TAPI_CID_CFG_t cid_cfg;
+
+       /* open device */
+       dev_ctx.dev_fd = lantiq_dev_open(base_path, 0);
+
+       if (dev_ctx.dev_fd < 0) {
+               ast_log(LOG_ERROR, "lantiq TAPI device open function failed\n");
+               goto load_error_st;
+       }
+
+       snprintf(dev_ctx.voip_led, LED_NAME_LENGTH, "voice");
+       for (c = 0; c < dev_ctx.channels ; c++) {
+               dev_ctx.ch_fd[c] = lantiq_dev_open(base_path, c + 1);
+
+               if (dev_ctx.ch_fd[c] < 0) {
+                       ast_log(LOG_ERROR, "lantiq TAPI channel %d open function failed\n", c);
+                       goto load_error_st;
+               }
+               snprintf(dev_ctx.ch_led[c], LED_NAME_LENGTH, "fxs%d", c + 1);
+       }
+
+       if (lantiq_dev_firmware_download(dev_ctx.dev_fd, firmware_filename)) {
+               ast_log(LOG_ERROR, "voice firmware download failed\n");
+               goto load_error_st;
+       }
+
+       if (ioctl(dev_ctx.dev_fd, IFX_TAPI_DEV_STOP, 0)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_DEV_STOP ioctl failed\n");
+               goto load_error_st;
+       }
+
+       memset(&dev_start, 0x0, sizeof(IFX_TAPI_DEV_START_CFG_t));
+       dev_start.nMode = IFX_TAPI_INIT_MODE_VOICE_CODER;
+
+       /* Start TAPI */
+       if (ioctl(dev_ctx.dev_fd, IFX_TAPI_DEV_START, &dev_start)) {
+               ast_log(LOG_ERROR, "IFX_TAPI_DEV_START ioctl failed\n");
+               goto load_error_st;
+       }
+
+       tz = ast_get_indication_zone(NULL);
+
+       if (!tz) {
+               ast_log(LOG_ERROR, "Unable to alloc tone zone\n");
+               goto load_error_st;
+       }
+
+       ts_dial = ast_get_indication_tone(tz, "dial");
+       ts_ring = ast_get_indication_tone(tz, "ring");
+       ts_busy = ast_get_indication_tone(tz, "busy");
+       ts_congestion = ast_get_indication_tone(tz, "congestion");
+
+       if (!ts_dial || !ts_dial->data || !ts_ring || !ts_ring->data || !ts_busy || !ts_busy->data || !ts_congestion || !ts_congestion->data) {
+               ast_log(LOG_ERROR, "Unable to get indication tones\n");
+               goto load_error_st;
+       }
+
+       for (c = 0; c < dev_ctx.channels ; c++) {
+               /* We're a FXS and want to switch between narrow & wide band automatically */
+               memset(&line_type, 0, sizeof(IFX_TAPI_LINE_TYPE_CFG_t));
+               line_type.lineType = IFX_TAPI_LINE_TYPE_FXS_AUTO;
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_LINE_TYPE_SET, &line_type)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_LINE_TYPE_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* tones */
+               memset(&tone, 0, sizeof(IFX_TAPI_TONE_t));
+               tone.simple.format = IFX_TAPI_TONE_TYPE_SIMPLE;
+               playlist_to_tapitone(ts_dial->data, TAPI_TONE_LOCALE_DIAL_CODE, &tone);
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_TONE_TABLE_CFG_SET, &tone)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_TONE_TABLE_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               memset(&tone, 0, sizeof(IFX_TAPI_TONE_t));
+               tone.simple.format = IFX_TAPI_TONE_TYPE_SIMPLE;
+               playlist_to_tapitone(ts_ring->data, TAPI_TONE_LOCALE_RINGING_CODE, &tone);
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_TONE_TABLE_CFG_SET, &tone)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_TONE_TABLE_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               memset(&tone, 0, sizeof(IFX_TAPI_TONE_t));
+               tone.simple.format = IFX_TAPI_TONE_TYPE_SIMPLE;
+               playlist_to_tapitone(ts_busy->data, TAPI_TONE_LOCALE_BUSY_CODE, &tone);
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_TONE_TABLE_CFG_SET, &tone)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_TONE_TABLE_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               memset(&tone, 0, sizeof(IFX_TAPI_TONE_t));
+               tone.simple.format = IFX_TAPI_TONE_TYPE_SIMPLE;
+               playlist_to_tapitone(ts_congestion->data, TAPI_TONE_LOCALE_CONGESTION_CODE, &tone);
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_TONE_TABLE_CFG_SET, &tone)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_TONE_TABLE_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* ringing type */
+               IFX_TAPI_RING_CFG_t ringingType;
+               memset(&ringingType, 0, sizeof(IFX_TAPI_RING_CFG_t));
+               ringingType.nMode = IFX_TAPI_RING_CFG_MODE_INTERNAL_BALANCED;
+               ringingType.nSubmode = IFX_TAPI_RING_CFG_SUBMODE_DC_RNG_TRIP_FAST;
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_RING_CFG_SET, (IFX_int32_t) &ringingType)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_RING_CFG_SET failed\n");
+                       goto load_error_st;
+               }
+
+               /* ring cadence */
+               IFX_char_t data[15] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+                                       0x00, 0x00, 0x00, 0x00, 0x00,
+                                       0x00, 0x00, 0x00, 0x00, 0x00 };
+
+               IFX_TAPI_RING_CADENCE_t ringCadence;
+               memset(&ringCadence, 0, sizeof(IFX_TAPI_RING_CADENCE_t));
+               memcpy(&ringCadence.data, data, sizeof(data));
+               ringCadence.nr = sizeof(data) * 8;
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_RING_CADENCE_HR_SET, &ringCadence)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_RING_CADENCE_HR_SET failed\n");
+                       goto load_error_st;
+               }
+
+               /* perform mapping */
+               memset(&map_data, 0x0, sizeof(IFX_TAPI_MAP_DATA_t));
+               map_data.nDstCh = c;
+               map_data.nChType = IFX_TAPI_MAP_TYPE_PHONE;
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_MAP_DATA_ADD, &map_data)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_MAP_DATA_ADD %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* set line feed */
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_LINE_FEED_SET, IFX_TAPI_LINE_FEED_STANDBY)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_LINE_FEED_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* set volume */
+               memset(&line_vol, 0, sizeof(line_vol));
+               line_vol.nGainRx = rxgain;
+               line_vol.nGainTx = txgain;
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_PHONE_VOLUME_SET, &line_vol)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_PHONE_VOLUME_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* Configure line echo canceller */
+               memset(&wlec_cfg, 0, sizeof(wlec_cfg));
+               wlec_cfg.nType = wlec_type;
+               wlec_cfg.bNlp = wlec_nlp;
+               wlec_cfg.nNBFEwindow = wlec_nbfe;
+               wlec_cfg.nNBNEwindow = wlec_nbne;
+               wlec_cfg.nWBNEwindow = wlec_wbne;
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_WLEC_PHONE_CFG_SET, &wlec_cfg)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_WLEC_PHONE_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* Configure jitter buffer */
+               memset(&jb_cfg, 0, sizeof(jb_cfg));
+               jb_cfg.nJbType = jb_type;
+               jb_cfg.nPckAdpt = jb_pckadpt;
+               jb_cfg.nLocalAdpt = jb_localadpt;
+               jb_cfg.nScaling = jb_scaling;
+               jb_cfg.nInitialSize = jb_initialsize;
+               jb_cfg.nMinSize = jb_minsize;
+               jb_cfg.nMaxSize = jb_maxsize;
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_JB_CFG_SET, &jb_cfg)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_JB_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* Configure Caller ID type */
+               memset(&cid_cfg, 0, sizeof(cid_cfg));
+               cid_cfg.nStandard = cid_type;
+
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_CID_CFG_SET, &cid_cfg)) {
+                       ast_log(LOG_ERROR, "IIFX_TAPI_CID_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* Configure voice activity detection */
+               if (ioctl(dev_ctx.ch_fd[c], IFX_TAPI_ENC_VAD_CFG_SET, vad_type)) {
+                       ast_log(LOG_ERROR, "IFX_TAPI_ENC_VAD_CFG_SET %d failed\n", c);
+                       goto load_error_st;
+               }
+
+               /* Setup TAPI <-> internal RTP codec type mapping */
+               if (lantiq_setup_rtp(c)) {
+                       goto load_error_st;
+               }
+
+               /* Set initial hook status */
+               iflist[c].channel_state = lantiq_get_hookstatus(c);
+
+               if (iflist[c].channel_state == UNKNOWN) {
+                       goto load_error_st;
+               }
+       }
+
+       /* make sure our device will be closed properly */
+       ast_register_atexit(lantiq_cleanup);
+
+       restart_monitor();
+       led_on(dev_ctx.voip_led);
+       return AST_MODULE_LOAD_SUCCESS;
+
+cfg_error_il:
+       ast_mutex_unlock(&iflock);
+cfg_error:
+       ast_config_destroy(cfg);
+       return AST_MODULE_LOAD_DECLINE;
+
+load_error_st:
+       ast_sched_context_destroy(sched);
+load_error:
+       unload_module();
+       ast_free(iflist);
+       return AST_MODULE_LOAD_FAILURE;
+}
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Lantiq TAPI Telephony API Support",
+       .load = load_module,
+       .unload = unload_module,
+       .load_pri = AST_MODPRI_CHANNEL_DRIVER
+);
diff --git a/net/asterisk-13.x/src-lantiq/configs/samples/lantiq.conf.sample b/net/asterisk-13.x/src-lantiq/configs/samples/lantiq.conf.sample
new file mode 100644 (file)
index 0000000..74c6f3f
--- /dev/null
@@ -0,0 +1,153 @@
+;
+; TAPI Telephony Interface
+;
+; Configuration file
+
+[interfaces]
+;
+; Number of FXS ports (default: 2)
+channels = 2
+;
+; Create contexts per channel (default: off)
+;per_channel_context = off
+;
+; Set tapi firmware file path
+;firmwarefilename = /lib/firmware/danube_firmware.bin
+;
+; Set tapi bbd file path
+;bbdfilename = /lib/firmware/danube_bbd_fxs.bin
+;
+; Set vmmc device path
+;basepath = /dev/vmmc
+;
+[general]
+;
+; Gain setting for the receive and transmit path.
+; The value is given in dB within the range (-24dB to +12dB), in 1 dB steps.
+;
+;rxgain = 1
+;txgain = 1
+;
+;
+;
+; Line echo cancller valid types:
+;
+; off          LEC and echo suppressor turned off.
+; nlec         LEC using fixed window; no echo suppressor.
+; wlec         LEC using fixed and moving window; no echo suppressor.
+; nees         LEC using fixed window and echo suppressor.
+; nfees                LEC using fixed and moving window and echo suppressor.
+; es           Echo suppressor
+;
+;echocancel = off
+;
+; If nlec or wlec is selected than size of the fixed window in narrowband (8 kHz) sampling mode
+; can be defined with:
+; A value of 0 defaults to: 16 ms if type is nlec or 8 ms if type is wlec:
+;
+;echocancelfixedwindowsize = 0
+;
+; If wlec is selected than size of the moving window in narrowband (8 kHz) sampling mode
+; can be defined with:
+; A value of 0 defaults to 8 ms.
+;
+;echocancelnfemovingwindowsize = 0
+;
+; If wlec is selected than size of the moving window in wideband (16 kHz) sampling mode
+; can be defined with:
+; A value of 0 defaults to 8 ms.
+;
+;echocancelwidefixedwindowsize = 0
+;
+; Activate or deactivate line echo cancller NLP (Non Linear Processor) if the LEC is active,
+; valid is on or off:
+;
+;echocancelnlp = off
+;
+;
+;
+; Jitter buffer valid types:
+;
+; fixed                Fixed jitter buffer.
+; adaptive     Adaptive jitter buffer.
+;
+;jitterbuffertype = fixed
+;
+; Jitter buffer packet adaptation valid types:
+;
+; voice                Jitter buffer optimized for voice.
+; data         Jitter buffer optimized for data.
+; datanorep    Jitter buffer optimized for data but without doing packet repetition.
+;
+;jitterbufferpackettype = voice
+;
+;      Following jitter buffer values can only be used with jitter buffer adaptive type:
+; Turns on or off jitter buffer adaptation:
+;
+;jitterbufferadaptation = off
+;
+; Scaling factor multiplied by 16; in adaptive jitter buffer mode, the target average playout delay is
+; equal to the estimated jitter multiplied by the scaling factor. The default value for the scaling factor
+; is about 1.4 (scaling=22), meaning that the target average playout delay is equal to the estimated
+; jitter. If less packets should be dropped because of jitter, the scaling factor has to be increased. An
+; increase in the scaling factor will eventually lead to an increased playout delay.
+; The supported range is 1 to 16 (16 up to 256).
+;
+;jitterbufferscalling = 1
+;
+; Initial size of the jitter buffer in time stamps of 125 us:
+;
+;jitterbufferinitialsize = 125
+;
+; Minimum size of the jitter buffer in time stamps of 125 us
+;
+;jitterbufferminsize = 125
+;
+; Maximum size of the jitter buffer in time stamps of 125 us
+;
+;jitterbuffermaxsize = 125
+;
+;
+;
+; Caller id valid standards:
+;
+; telecordia    Bellcore/Telcordia GR-30-CORE; use Bell202 FSK coding of CID information. (default)
+; etsifsk       ETSI 300-659-1/2/3 V1.3.1; use V.23 FSK coding to transmit CID information.
+; etsidtmf      ETSI 300-659-1/2/3 V1.3.1; use DTMF transmission of CID information.
+; sin           SIN 227 Issue 3.4; use V.23 FSK coding of CID information.
+; ntt           NTT standard: TELEPHONE SERVICE INTERFACES, edition 5; use a modified V.23 FSK coding of
+;               CID information.
+; kpndtmf       KPN; use DTMF transmission of CID information.
+; kpndtmffsk    KPN; use DTMF and FSK transmission of CID information.
+;
+;calleridtype = telecordia
+;
+;
+;
+; Voice activity detection:
+;
+; on           Voice activity detection on; in this case also comfort noise and spectral
+;              information (nicer noise) is switched on.
+; g711         Voice activity detection on with comfort noise generation,
+;              but without spectral information.
+; cng          Voice activity detection on with comfort noise generation, but without silence compression
+; sc           Voice activity detection on with silence compression,
+;              but without comfort noise generation.
+;
+;voiceactivitydetection = on
+;
+;
+;
+; Timeout between dialed digits, in milliseconds, before placing the call.
+;
+;interdigit = 4000
+;
+;
+;
+; Tone generator type (default: integrated)
+; integrated   Use tapi tone generator
+; asterisk     Use asterisk tone generator where possible
+; media                Use media tone where possible
+;
+;tone_generator = integrated
+;