freetdm: Added GSM module skeleton

libs/freetdm/Makefile.am

@@ -248,6 +248,14 @@ ftmod_r2_la_LDFLAGS = -shared -module -avoid-version -lopenr2
 ftmod_r2_la_LIBADD  = libfreetdm.la
 endif
 
+if HAVE_WAT
+mod_LTLIBRARIES += ftmod_gsm.la
+ftmod_gsm_la_SOURCES = $(SRC)/ftmod/ftmod_gsm/ftmod_gsm.c 
+ftmod_gsm_la_CFLAGS  = $(FTDM_CFLAGS) $(AM_CFLAGS)
+ftmod_gsm_la_LDFLAGS = -shared -module -avoid-version -lwat
+ftmod_gsm_la_LIBADD  = libfreetdm.la
+endif
+
 if HAVE_MISDN
 mod_LTLIBRARIES += ftmod_misdn.la
 ftmod_misdn_la_SOURCES  = $(SRC)/ftmod/ftmod_misdn/ftmod_misdn.c

libs/freetdm/configure.ac

@@ -189,6 +189,14 @@ AC_CHECK_LIB([openr2], [openr2_context_set_io_type], [HAVE_OPENR2="yes"])
 AC_MSG_RESULT([checking whether to build ftmod_r2... ${HAVE_OPENR2}])
 AM_CONDITIONAL([HAVE_OPENR2], [test "${HAVE_OPENR2}" = "yes"])
 
+##
+# WAT GSM stack
+#
+HAVE_WAT="no"
+AC_CHECK_LIB([wat], [wat_version], [HAVE_WAT="yes"])
+AC_MSG_RESULT([checking whether to build ftmod_wat... ${HAVE_WAT}])
+AM_CONDITIONAL([HAVE_WAT], [test "${HAVE_WAT}" = "yes"])
+
 ##
 # Digium libpri (TODO: add checks)
 #
@@ -450,6 +458,7 @@ AC_MSG_RESULT([
 	ftmod_sangoma_isdn................. ${HAVE_SNG_ISDN}
 	ftmod_sangoma_ss7.................. ${HAVE_SNG_SS7}
 	ftmod_r2........................... ${HAVE_OPENR2}
+	ftmod_gsm.......................... ${HAVE_WAT}
 	ftmod_pritap....................... ${HAVE_PRITAP}
   I/O:
 	ftmod_wanpipe...................... ${HAVE_LIBSANGOMA}

libs/freetdm/mod_freetdm/mod_freetdm.c

@@ -2820,6 +2820,95 @@ static int add_profile_parameters(switch_xml_t cfg, const char *profname, ftdm_c
 	return paramindex;
 }
 
+static void parse_gsm_spans(switch_xml_t cfg, switch_xml_t spans)
+{
+	switch_xml_t myspan, param;
+
+	for (myspan = switch_xml_child(spans, "span"); myspan; myspan = myspan->next) {
+		ftdm_status_t zstatus = FTDM_FAIL;
+		const char *context = "default";
+		const char *dialplan = "XML";
+		ftdm_conf_parameter_t spanparameters[30];
+		char *id = (char *) switch_xml_attr(myspan, "id");
+		char *name = (char *) switch_xml_attr(myspan, "name");
+		char *configname = (char *) switch_xml_attr(myspan, "cfgprofile");
+		ftdm_span_t *span = NULL;
+		uint32_t span_id = 0;
+		unsigned paramindex = 0;
+
+		if (!name && !id) {
+			CONFIG_ERROR("sangoma isdn span missing required attribute 'id' or 'name', skipping ...\n");
+			continue;
+		}
+
+		if (name) {
+			zstatus = ftdm_span_find_by_name(name, &span);
+		} else {
+			if (switch_is_number(id)) {
+				span_id = atoi(id);
+				zstatus = ftdm_span_find(span_id, &span);
+			}
+
+			if (zstatus != FTDM_SUCCESS) {
+				zstatus = ftdm_span_find_by_name(id, &span);
+			}
+		}
+
+		if (zstatus != FTDM_SUCCESS) {
+			CONFIG_ERROR("Error finding FreeTDM span id:%s name:%s\n", switch_str_nil(id), switch_str_nil(name));
+			continue;
+		}
+		
+		if (!span_id) {
+			span_id = ftdm_span_get_id(span);
+		}
+
+		memset(spanparameters, 0, sizeof(spanparameters));
+		paramindex = 0;
+
+		if (configname) {
+			paramindex = add_profile_parameters(cfg, configname, spanparameters, ftdm_array_len(spanparameters));
+			if (paramindex) {
+				ftdm_log(FTDM_LOG_DEBUG, "Added %d parameters from profile %s for span %d\n", paramindex, configname, span_id);
+			}
+		}
+
+		for (param = switch_xml_child(myspan, "param"); param; param = param->next) {
+			char *var = (char *) switch_xml_attr_soft(param, "name");
+			char *val = (char *) switch_xml_attr_soft(param, "value");
+
+			if (ftdm_array_len(spanparameters) - 1 == paramindex) {
+				CONFIG_ERROR("Too many parameters for GSM span, ignoring any parameter after %s\n", var);
+				break;
+			}
+
+			if (!strcasecmp(var, "context")) {
+				context = val;
+			} else if (!strcasecmp(var, "dialplan")) {
+				dialplan = val;
+			} else {
+				spanparameters[paramindex].var = var;
+				spanparameters[paramindex].val = val;
+				paramindex++;
+			}
+		}
+
+		if (ftdm_configure_span_signaling(span, 
+						  "gsm", 
+						  on_clear_channel_signal,
+						  spanparameters) != FTDM_SUCCESS) {
+			CONFIG_ERROR("Error configuring Sangoma ISDN FreeTDM span %d\n", span_id);
+			continue;
+		}
+		SPAN_CONFIG[span_id].span = span;
+		switch_copy_string(SPAN_CONFIG[span_id].context, context, sizeof(SPAN_CONFIG[span_id].context));
+		switch_copy_string(SPAN_CONFIG[span_id].dialplan, dialplan, sizeof(SPAN_CONFIG[span_id].dialplan));
+		switch_copy_string(SPAN_CONFIG[span_id].type, "GSM", sizeof(SPAN_CONFIG[span_id].type));
+		ftdm_log(FTDM_LOG_DEBUG, "Configured GSM FreeTDM span %d\n", span_id);
+		ftdm_span_start(span);
+	}
+}
+
 static void parse_bri_pri_spans(switch_xml_t cfg, switch_xml_t spans)
 {
 	switch_xml_t myspan, param;
@@ -2997,6 +3086,10 @@ static switch_status_t load_config(void)
 		parse_bri_pri_spans(cfg, spans);
 	}
 
+	if ((spans = switch_xml_child(cfg, "gsm_spans"))) {
+		parse_gsm_spans(cfg, spans);
+	}
+
 	switch_core_hash_init(&globals.ss7_configs, module_pool);
 	if ((spans = switch_xml_child(cfg, "sangoma_ss7_spans"))) {
 		for (myspan = switch_xml_child(spans, "span"); myspan; myspan = myspan->next) {

libs/freetdm/src/ftmod/ftmod_gsm/ftmod_gsm.c

@@ -0,0 +1,424 @@
+/*
+ * Copyright (c) 2011, Sangoma Technologies 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Contributors: 
+ *
+ * Gideon Sadan <gsadan@sangoma.com>
+ * Moises Silva <moy@sangoma.com>
+ *
+ */
+
+#include <stdio.h>
+#include <libwat.h>
+#include <freetdm.h>
+#include <private/ftdm_core.h>
+
+/* span monitor thread */
+static void *ftdm_gsm_run(ftdm_thread_t *me, void *obj);
+
+/* IO interface for the command API */
+static ftdm_io_interface_t g_ftdm_gsm_interface;
+
+static FIO_CHANNEL_OUTGOING_CALL_FUNCTION(gsm_outgoing_call)
+{
+	ftdm_log_chan_msg(ftdmchan, FTDM_LOG_CRIT, "GSM place call not implemented yet!\n");
+	return FTDM_FAIL;
+}
+
+static ftdm_status_t ftdm_gsm_start(ftdm_span_t *span)
+{
+	return ftdm_thread_create_detached(ftdm_gsm_run, span);
+}
+
+static ftdm_status_t ftdm_gsm_stop(ftdm_span_t *span)
+{
+	ftdm_log(FTDM_LOG_CRIT, "STOP not implemented yet!\n");
+	return FTDM_FAIL;
+}
+
+static FIO_CHANNEL_GET_SIG_STATUS_FUNCTION(ftdm_gsm_get_channel_sig_status)
+{
+	ftdm_log_chan_msg(ftdmchan, FTDM_LOG_CRIT, "get sig status not implemented yet!\n");
+	return FTDM_FAIL;
+}
+
+static FIO_CHANNEL_SET_SIG_STATUS_FUNCTION(ftdm_gsm_set_channel_sig_status)
+{
+	ftdm_log_chan_msg(ftdmchan, FTDM_LOG_CRIT, "set sig status not implemented yet!\n");
+	return FTDM_FAIL;
+}
+
+static FIO_SPAN_GET_SIG_STATUS_FUNCTION(ftdm_gsm_get_span_sig_status)
+{
+	ftdm_log(FTDM_LOG_CRIT, "span get sig status not implemented yet!\n");
+	return FTDM_FAIL;
+}
+
+static FIO_SPAN_SET_SIG_STATUS_FUNCTION(ftdm_gsm_set_span_sig_status)
+{
+	ftdm_log(FTDM_LOG_CRIT, "span set sig status not implemented yet!\n");
+	return FTDM_FAIL;
+}
+
+static ftdm_state_map_t gsm_state_map = {
+	{
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_ANY_STATE, FTDM_END},
+			{FTDM_CHANNEL_STATE_RESET, FTDM_END}
+		},
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_RESET, FTDM_END},
+			{FTDM_CHANNEL_STATE_DOWN, FTDM_END}
+		},
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_DOWN, FTDM_END},
+			{FTDM_CHANNEL_STATE_RING, FTDM_END}
+		},
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_RING, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_CHANNEL_STATE_TERMINATING, FTDM_CHANNEL_STATE_PROGRESS_MEDIA, FTDM_CHANNEL_STATE_UP, FTDM_END}
+		},
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_END},
+			{FTDM_CHANNEL_STATE_DOWN, FTDM_END},
+		},
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_TERMINATING, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_END},
+		},
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_PROGRESS_MEDIA, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_CHANNEL_STATE_TERMINATING, FTDM_CHANNEL_STATE_UP, FTDM_END},
+		},
+		{
+			ZSD_INBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_UP, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_CHANNEL_STATE_TERMINATING, FTDM_END},
+		},
+		
+		/* Outbound states */
+		
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_ANY_STATE, FTDM_END},
+			{FTDM_CHANNEL_STATE_RESET, FTDM_END}
+		},
+
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_RESET, FTDM_END},
+			{FTDM_CHANNEL_STATE_DOWN, FTDM_END}
+		},
+
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_DOWN, FTDM_END},
+			{FTDM_CHANNEL_STATE_DIALING, FTDM_END}
+		},
+
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_DIALING, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_CHANNEL_STATE_TERMINATING, FTDM_CHANNEL_STATE_PROGRESS_MEDIA, FTDM_END}
+		},
+
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_END},
+			{FTDM_CHANNEL_STATE_DOWN, FTDM_END}
+		},
+
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_TERMINATING, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_END}
+		},
+
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_PROGRESS_MEDIA, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_CHANNEL_STATE_TERMINATING, FTDM_CHANNEL_STATE_UP, FTDM_END}
+		},
+
+		{
+			ZSD_OUTBOUND,
+			ZSM_UNACCEPTABLE,
+			{FTDM_CHANNEL_STATE_UP, FTDM_END},
+			{FTDM_CHANNEL_STATE_HANGUP, FTDM_CHANNEL_STATE_TERMINATING, FTDM_END}
+		},
+	}
+};
+
+static ftdm_status_t ftdm_gsm_state_advance(ftdm_channel_t *ftdmchan)
+{
+	ftdm_log_chan(ftdmchan, FTDM_LOG_DEBUG, "Executing state handler for %s\n", ftdm_channel_state2str(ftdmchan->state));
+	return FTDM_SUCCESS;
+}
+
+static FIO_CONFIGURE_SPAN_SIGNALING_FUNCTION(ftdm_gsm_configure_span_signaling)
+{
+	unsigned paramindex = 0;
+	const char *var = NULL;
+	const char *val = NULL;
+
+	ftdm_assert_return(sig_cb != NULL, FTDM_FAIL, "No signaling cb provided\n");
+
+	if (span->signal_type) {
+		snprintf(span->last_error, sizeof(span->last_error), "Span is already configured for signalling.");
+		return FTDM_FAIL;
+	}
+
+	for (; ftdm_parameters[paramindex].var; paramindex++) {
+		var = ftdm_parameters[paramindex].var;
+		val = ftdm_parameters[paramindex].val;
+		ftdm_log(FTDM_LOG_DEBUG, "Reading GSM parameter %s for span %d\n", var, span->span_id);
+		if (!strcasecmp(var, "moduletype")) {
+			if (!val) {
+				break;
+			}
+			if (ftdm_strlen_zero_buf(val)) {
+				ftdm_log(FTDM_LOG_NOTICE, "Ignoring empty moduletype parameter\n");
+				continue;
+			}
+			ftdm_log(FTDM_LOG_DEBUG, "Configuring GSM span %d for moduletype %s\n", span->span_id, val);
+		} else {
+			snprintf(span->last_error, sizeof(span->last_error), "Unknown GSM parameter [%s]", var);
+			return FTDM_FAIL;
+		}
+	}
+
+	/* Bind function pointers for control operations */
+	span->start = ftdm_gsm_start;
+	span->stop = ftdm_gsm_stop;
+	span->sig_read = NULL;
+	span->sig_write = NULL;
+
+	span->signal_cb = sig_cb;
+	span->signal_type = FTDM_SIGTYPE_GSM;
+	span->signal_data = NULL; /* Gideon, plz fill me with gsm span specific data (you allocate and free) */
+	span->outgoing_call = gsm_outgoing_call;
+	span->get_span_sig_status = ftdm_gsm_get_span_sig_status;
+	span->set_span_sig_status = ftdm_gsm_set_span_sig_status;
+	span->get_channel_sig_status = ftdm_gsm_get_channel_sig_status;
+	span->set_channel_sig_status = ftdm_gsm_set_channel_sig_status;
+
+	span->state_map = &gsm_state_map;
+	span->state_processor = ftdm_gsm_state_advance;
+
+	/* use signals queue */
+	ftdm_set_flag(span, FTDM_SPAN_USE_SIGNALS_QUEUE);
+
+	/* we can skip states (going straight from RING to UP) */
+	ftdm_set_flag(span, FTDM_SPAN_USE_SKIP_STATES);
+
+#if 0
+	/* setup the scheduler (create if needed) */
+	snprintf(schedname, sizeof(schedname), "ftmod_r2_%s", span->name);
+	ftdm_assert(ftdm_sched_create(&r2data->sched, schedname) == FTDM_SUCCESS, "Failed to create schedule!\n");
+	spanpvt->sched = r2data->sched;
+#endif
+
+	return FTDM_SUCCESS;
+
+}
+
+static void *ftdm_gsm_run(ftdm_thread_t *me, void *obj)
+{
+	ftdm_channel_t *ftdmchan = NULL;
+	ftdm_span_t *span = (ftdm_span_t *) obj;
+	ftdm_iterator_t *chaniter = NULL;
+	ftdm_iterator_t *citer = NULL;
+	int waitms = 10;
+
+	ftdm_log(FTDM_LOG_DEBUG, "GSM monitor thread for span %s started\n", span->name);
+
+	chaniter = ftdm_span_get_chan_iterator(span, NULL);
+	if (!chaniter) {
+		ftdm_log(FTDM_LOG_CRIT, "Failed to allocate channel iterator for span %s!\n", span->name);
+		goto done;
+	}
+	while (ftdm_running()) {
+
+#if 0
+		/* run any span timers */
+		ftdm_sched_run(r2data->sched);
+
+#endif
+		/* deliver the actual channel events to the user now without any channel locking */
+		ftdm_span_trigger_signals(span);
+#if 0
+		 /* figure out what event to poll each channel for. POLLPRI when the channel is down,
+		  * POLLPRI|POLLIN|POLLOUT otherwise */
+		memset(poll_events, 0, sizeof(short)*span->chan_count);
+		citer = ftdm_span_get_chan_iterator(span, chaniter);
+		if (!citer) {
+			ftdm_log(FTDM_LOG_CRIT, "Failed to allocate channel iterator for span %s!\n", span->name);
+			goto done;
+		}
+		for (i = 0; citer; citer = ftdm_iterator_next(citer), i++) {
+			ftdmchan = ftdm_iterator_current(citer);
+			r2chan = R2CALL(ftdmchan)->r2chan;
+			poll_events[i] = FTDM_EVENTS;
+			if (openr2_chan_get_read_enabled(r2chan)) {
+				poll_events[i] |= FTDM_READ;
+			}
+		}
+		status = ftdm_span_poll_event(span, waitms, poll_events);
+
+		/* run any span timers */
+		ftdm_sched_run(r2data->sched);
+#endif
+		ftdm_sleep(waitms);
+
+
+		/* this main loop takes care of MF and CAS signaling during call setup and tear down
+		 * for every single channel in the span, do not perform blocking operations here! */
+		citer = ftdm_span_get_chan_iterator(span, chaniter);
+		for ( ; citer; citer = ftdm_iterator_next(citer)) {
+			ftdmchan = ftdm_iterator_current(citer);
+
+			ftdm_channel_lock(ftdmchan);
+
+			ftdm_channel_advance_states(ftdmchan);
+
+			ftdm_channel_unlock(ftdmchan);
+		}
+	}
+
+done:
+	ftdm_iterator_free(chaniter);
+
+	ftdm_log(FTDM_LOG_DEBUG, "GSM thread ending.\n");
+
+	return NULL;
+}
+
+#define FT_SYNTAX "USAGE:\n" \
+"--------------------------------------------------------------------------------\n" \
+"ftdm gsm status <span_id|span_name>\n" \
+"--------------------------------------------------------------------------------\n"
+static FIO_API_FUNCTION(ftdm_gsm_api)
+{
+	char *mycmd = NULL, *argv[10] = { 0 };
+	int argc = 0;
+
+	if (data) {
+		mycmd = ftdm_strdup(data);
+		argc = ftdm_separate_string(mycmd, ' ', argv, (sizeof(argv) / sizeof(argv[0])));
+	}
+
+	if (argc == 1) {
+		if (!strcasecmp(argv[0], "version")) {
+			stream->write_function(stream, "libwat GSM version: implement me!!\n");
+			stream->write_function(stream, "+OK.\n");
+			goto done;
+		}
+	}
+
+	stream->write_function(stream, "%s", FT_SYNTAX);
+
+done:
+
+	ftdm_safe_free(mycmd);
+
+	return FTDM_SUCCESS;
+
+}
+
+static FIO_IO_LOAD_FUNCTION(ftdm_gsm_io_init)
+{
+	assert(fio != NULL);
+	memset(&g_ftdm_gsm_interface, 0, sizeof(g_ftdm_gsm_interface));
+
+	g_ftdm_gsm_interface.name = "gsm";
+	g_ftdm_gsm_interface.api = ftdm_gsm_api;
+
+	*fio = &g_ftdm_gsm_interface;
+
+	return FTDM_SUCCESS;
+}
+
+static FIO_SIG_LOAD_FUNCTION(ftdm_gsm_init)
+{
+	/* this is called on module load */
+	return FTDM_SUCCESS;
+}
+
+static FIO_SIG_UNLOAD_FUNCTION(ftdm_gsm_destroy)
+{
+	/* this is called on module unload */
+	return FTDM_SUCCESS;
+}
+
+EX_DECLARE_DATA ftdm_module_t ftdm_module = { 
+	/* .name */ "gsm",
+	/* .io_load */ ftdm_gsm_io_init,
+	/* .io_unload */ NULL,
+	/* .sig_load */ ftdm_gsm_init,
+	/* .sig_configure */ NULL,
+	/* .sig_unload */ ftdm_gsm_destroy,
+	/* .configure_span_signaling */ ftdm_gsm_configure_span_signaling
+};
+	
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */

libs/freetdm/src/include/freetdm.h

@@ -472,9 +472,10 @@ typedef enum {
 	FTDM_TRUNK_FXO,
 	FTDM_TRUNK_FXS,
 	FTDM_TRUNK_EM,
+	FTDM_TRUNK_GSM,
 	FTDM_TRUNK_NONE
 } ftdm_trunk_type_t;
-#define TRUNK_STRINGS "E1", "T1", "J1", "BRI", "BRI_PTMP", "FXO", "FXS", "EM", "NONE"
+#define TRUNK_STRINGS "E1", "T1", "J1", "BRI", "BRI_PTMP", "FXO", "FXS", "EM", "GSM", "NONE"
 
 /*! \brief Move from string to ftdm_trunk_type_t and viceversa */
 FTDM_STR2ENUM_P(ftdm_str2ftdm_trunk_type, ftdm_trunk_type2str, ftdm_trunk_type_t)

libs/freetdm/src/include/private/ftdm_types.h

@@ -163,7 +163,8 @@ typedef enum {
 	FTDM_SIGTYPE_SANGOMABOOST,
 	FTDM_SIGTYPE_M3UA,
 	FTDM_SIGTYPE_R2,
-	FTDM_SIGTYPE_SS7
+	FTDM_SIGTYPE_SS7,
+	FTDM_SIGTYPE_GSM
 } ftdm_signal_type_t;
 
 typedef enum {