freetdm: OPENZAP-151 --resolved SS7 ANM and REL message collision

diff --git a/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c b/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c
index 5deb9b0fc1b37f40c401a5d6a72cc53a9f0e2e27..6fb9c82895c04bff96a2664eb1f2e22c30e2f4c8 100644 (file)
--- a/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c
+++ b/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c
@@ -584,6 +584,20 @@ ftdm_status_t handle_con_cfm(uint32_t suInstId, uint32_t spInstId, uint32_t circ
 
                break;          
        /**************************************************************************/
+       case FTDM_CHANNEL_STATE_HANGUP_COMPLETE:
+
+               /* already hangup complete, just ignore it */
+               /* 
+                * i.e. collision REL & ANM
+                * IAM ->
+                * <- ACM
+                * REL ->       <- ANM  (if REL gets processed first, ANM needs to be ignored)
+                * <- RLC
+                */
+               SS7_INFO_CHAN(ftdmchan,"[CIC:%d]Rx ANM/CON Ignoring it because we already hung up\n", sngss7_info->circuit->cic);
+
+               break;
+       /**************************************************************************/
        default:        /* incorrect state...reset the CIC */
 
                SS7_INFO_CHAN(ftdmchan,"[CIC:%d]Rx ANM/CON\n", sngss7_info->circuit->cic);