From fa1a1bfbaff3596f7a0b3a14112daa324c7ee318 Mon Sep 17 00:00:00 2001
From: Moises Silva <moy@sangoma.com>
Date: Tue, 22 Oct 2013 00:52:59 -0400
Subject: [PATCH] freetdm: Added CAS hangup bit checking to the E&M signaling
module
---
.../ftmod/ftmod_analog_em/ftmod_analog_em.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/libs/freetdm/src/ftmod/ftmod_analog_em/ftmod_analog_em.c b/libs/freetdm/src/ftmod/ftmod_analog_em/ftmod_analog_em.c
index b08a832b4f..b5d3ee66da 100644
--- a/libs/freetdm/src/ftmod/ftmod_analog_em/ftmod_analog_em.c
+++ b/libs/freetdm/src/ftmod/ftmod_analog_em/ftmod_analog_em.c
@@ -483,7 +483,9 @@ static void *ftdm_analog_em_channel_run(ftdm_thread_t *me, void *obj)
ftdm_sigmsg_t sig;
int cas_bits = 0;
uint32_t cas_answer = 0;
+ uint32_t cas_hangup = 0;
int cas_answer_ms = 500;
+ int cas_hangup_ms = 500;
FILE *ringback_f = NULL;
ftdm_bool_t digits_sent = FTDM_FALSE;
@@ -640,6 +642,23 @@ static void *ftdm_analog_em_channel_run(ftdm_thread_t *me, void *obj)
case FTDM_CHANNEL_STATE_RING:
{
ftdm_sleep(interval);
+ if (ftdmchan->state == FTDM_CHANNEL_STATE_UP && cas_answer) {
+ cas_bits = 0;
+ ftdm_channel_command(ftdmchan, FTDM_COMMAND_GET_CAS_BITS, &cas_bits);
+ if (!(state_counter % 5000)) {
+ ftdm_log_chan(ftdmchan, FTDM_LOG_DEBUG, "CAS bits: 0x%X\n", cas_bits);
+ }
+ if (cas_bits == 0x0) {
+ cas_hangup += interval;
+ if (cas_hangup >= cas_hangup_ms) {
+ ftdm_log_chan_msg(ftdmchan, FTDM_LOG_INFO, "Hanging up on CAS hangup signal persistence\n");
+ ftdm_set_state_locked(ftdmchan, FTDM_CHANNEL_STATE_HANGUP);
+ }
+ } else if (cas_hangup) {
+ ftdm_log_chan(ftdmchan, FTDM_LOG_DEBUG, "Resetting cas hangup to 0: 0x%X!\n", cas_bits);
+ cas_hangup = 0;
+ }
+ }
continue;
}
break;