PBX INVITE TIMER

- Changed the logic so that INVITE messages from PBX's that receive a SIP 100 message will be assigned a different INVITE timer timeout - Fixes #195

kamailio/kamailio51_dsiprouter.cfg

@@ -274,7 +274,10 @@ server.pbx_max_local_digits = 5 desc "Maximum digits for local pbx extensions"
 server.lcr_min_prefix_digits = 3 desc "Minimum digits for LCR prefix matching"
 
 # PBX INVITE Timeout (msecs) to support having a Primary and Secondary PBX
-server.pbx_invite_timeout = 32000 desc "PBX INVITE timeout to support having a Primary and Secondary PBX"
+server.pbx_invite_timeout = 32000 desc "The default PBX INVITE timeout"
+
+# PBX INVITE Timeout (msecs) if a SIP 100 message is received
+server.pbx_invite_timeout_aftertry = 52000 desc "PBX INVITE timeout value if a SIP 100 message is received"
 
 ####### Modules Section ########
 
@@ -1753,9 +1756,9 @@ onreply_route[MANAGE_REPLY] {
         # if the PBX returns 100 trying or 180 ringing.  This means that the PBX is at least trying to
         # establish the call.  So, we will extend the timeout by two.
 
-        $var(pbx_invite_timeout) = (int)$sel(cfg_get.server.pbx_invite_timeout);
-	t_set_max_lifetime($var(pbx_invite_timeout)*2, 0);
-        xlog("L_DBG","[MANAGE_REPLY"]: ***Increasing timeout by 2***");
+        $var(pbx_invite_timeout) = (int)$sel(cfg_get.server.pbx_invite_timeout_aftertry);
+	t_set_max_lifetime($var(pbx_invite_timeout), 0);
+        xlog("L_DBG","[MANAGE_REPLY]: ***Setting the Invite Timeout if a SIP 100 Trying is received***");
 
 
     }