Hi, I am working on Freeswitch@ rev 7309. I remember with earlier revision call waiting was working fine. But now on getting the second incoming call FXS is returning 502 (BAD gateway error). Was there any change on FXS side pertaining to number of calls allowed or something??? Freeswitch Log: 2008-01-25 15:48:17 [DEBUG] switch_core_state_machine.c:144 switch_core_standard_on_execute() sofia/default/6502@192.168.2.51:5060 Execute set(dialed_ext=6601) 2008-01-25 15:48:17 [DEBUG] mod_dptools.c:442 set_function() SET [dialed_ext]=[6601] 2008-01-25 15:48:17 [DEBUG] switch_core_state_machine.c:144 switch_core_standard_on_execute() sofia/default/6502@192.168.2.51:5060 Execute set(hangup_after_bridge=true) 2008-01-25 15:48:17 [DEBUG] mod_dptools.c:442 set_function() SET [hangup_after_bridge]=[true] 2008-01-25 15:48:17 [DEBUG] switch_core_state_machine.c:144 switch_core_standard_on_execute() sofia/default/6502@192.168.2.51:5060 Execute set(bypass_media=false) 2008-01-25 15:48:17 [DEBUG] mod_dptools.c:442 set_function() SET [bypass_media]=[false] 2008-01-25 15:48:17 [DEBUG] switch_core_state_machine.c:144 switch_core_standard_on_execute() sofia/default/6502@192.168.2.51:5060 Execute bridge(openzap/1/1) 2008-01-25 15:48:17 [ERR] mod_openzap.c:833 channel_outgoing_channel() No channels available 2008-01-25 15:48:17 [ERR] switch_ivr_originate.c:827 switch_ivr_originate() Cannot Create Outgoing Channel! cause: DESTINATION_OUT_OF_ORDER 2008-01-25 15:48:17 [DEBUG] switch_ivr_originate.c:1226 switch_ivr_originate() Originate Resulted in Error Cause: 27 [DESTINATION_OUT_OF_ORDER] 2008-01-25 15:48:17 [INFO] mod_dptools.c:1325 audio_bridge_function() Originate Failed. Cause: DESTINATION_OUT_OF_ORDER 2008-01-25 15:48:17 [NOTICE] mod_dptools.c:1352 audio_bridge_function() Hangup sofia/default/6502@192.168.2.51:5060 [CS_EXECUTE] [DESTINATION_OUT_OF_ORDER] 2008-01-25 15:48:17 [DEBUG] switch_channel.c:1317 switch_channel_perform_hangup() Kill sofia/default/6502@192.168.2.51:5060 [KILL] 2008-01-25 15:48:17 [DEBUG] switch_core_session.c:643 switch_core_session_signal_state_change() Kill sofia/default/6502@192.168.2.51:5060 [BREAK] 2008-01-25 15:48:17 [DEBUG] switch_core_state_machine.c:413 switch_core_session_run() sofia/default/6502@192.168.2.51:5060 Running State Change CS_HANGUP 2008-01-25 15:48:17 [DEBUG] switch_core_state_machine.c:439 switch_core_session_run() (sofia/default/6502@192.168.2.51:5060) State HANGUP 2008-01-25 15:48:17 [DEBUG] mod_sofia.c:299 sofia_on_hangup() Channel sofia/default/6502@192.168.2.51:5060 hanging up, cause: DESTINATION_OUT_OF_ORDER 2008-01-25 15:48:17 [DEBUG] mod_sofia.c:332 sofia_on_hangup() Responding to INVITE with: 502 2008-01-25 15:48:17 [DEBUG] sofia.c:183 sofia_event_callback() event [nua_i_state] status [502][Call state] session: sofia/default/6502@192.168.2.51:5060 2008-01-25 15:48:17 [DEBUG] sofia.c:1430 sofia_handle_sip_i_state() Channel sofia/default/6502@192.168.2.51:5060 entering state [terminated] 2008-01-25 15:48:17 [DEBUG] switch_core_state_machine.c:45 switch_core_standard_on_hangup() Standard HANGUP sofia/default/6502@192.168.2.51:5060, cause: DESTINATION_OUT_OF_ORDER 2008-01-25 15:48:17 [DEBUG] switch_core_session.c:701 switch_core_session_thread() Session 3 (sofia/default/6502@192.168.2.51:5060) Locked, Waiting on external entities 2008-01-25 15:48:17 [NOTICE] switch_core_session.c:707 switch_core_session_thread() Session 3 (sofia/default/6502@192.168.2.51:5060) Ended 2008-01-25 15:48:17 [NOTICE] switch_core_session.c:709 switch_core_session_thread() Close Channel sofia/default/6502@192.168.2.51:5060 [CS_HANGUP] 2008-01-25 15:48:36 [DEBUG] zap_analog.c:665 process_event() EVENT [ONHOOK][1:1] STATE [UP] 2008-01-25 15:48:36 [DEBUG] zap_analog.c:691 process_event() Changing state on 1:1 from UP to DOWN 2008-01-25 15:48:36 [DEBUG] zap_analog.c:351 zap_analog_channel_run() Executing state handler on 1:1 for DOWN 2008-01-25 15:48:36 [DEBUG] mod_openzap.c:1037 on_fxs_signal() got FXS sig [STOP] 2008-01-25 15:48:36 [NOTICE] mod_openzap.c:1115 on_fxs_signal() Hangup OpenZAP/777 [CS_EXECUTE] [NORMAL_CLEARING] 2008-01-25 15:48:36 [DEBUG] switch_channel.c:1317 switch_channel_perform_hangup() Kill OpenZAP/777 [KILL] 2008-01-25 15:48:36 [DEBUG] switch_core_session.c:643 switch_core_session_signal_state_change() Kill OpenZAP/777 [BREAK] 2008-01-25 15:48:36 [DEBUG] zap_analog.c:649 zap_analog_channel_run() ANALOG CHANNEL thread ended. 2008-01-25 15:48:36 [DEBUG] switch_ivr_bridge.c:186 audio_bridge_thread() read: OpenZAP/777 Bad Frame.... Bubye! 2008-01-25 15:48:36 [DEBUG] switch_core_session.c:358 switch_core_session_receive_message() Kill OpenZAP/777 [BREAK] 2008-01-25 15:48:36 [DEBUG] switch_ivr_bridge.c:224 audio_bridge_thread() Kill sofia/default/777@sipx.oneconv.com [BREAK] 2008-01-25 15:48:36 [DEBUG] switch_ivr_bridge.c:227 audio_bridge_thread() BRIDGE THREAD DONE [OpenZAP/777] 2008-01-25 15:48:36 [DEBUG] switch_ivr_bridge.c:693 switch_ivr_multi_threaded_bridge() sofia/default/777@sipx.oneconv.com State Change CS_LOOPBACK -> CS_RESET 2008-01-25 15:48:36 [DEBUG] switch_core_session.c:643 switch_core_session_signal_state_change() Kill sofia/default/777@sipx.oneconv.com [BREAK] 2008-01-25 15:48:36 [DEBUG] switch_core_state_machine.c:413 switch_core_session_run() OpenZAP/777 Running State Change CS_HANGUP 2008-01-25 15:48:36 [DEBUG] switch_core_state_machine.c:439 switch_core_session_run() (OpenZAP/777) State HANGUP 2008-01-25 15:48:36 [DEBUG] mod_openzap.c:418 channel_on_hangup() OpenZAP/777 CHANNEL HANGUP 2008-01-25 15:48:36 [DEBUG] switch_core_state_machine.c:45 switch_core_standard_on_hangup() Standard HANGUP OpenZAP/777, cause: NORMAL_CLEARING 2008-01-25 15:48:36 [DEBUG] switch_core_session.c:701 switch_core_session_thread() Session 1 (OpenZAP/777) Locked, Waiting on external entities 2008-01-25 15:48:36 [DEBUG] switch_ivr_bridge.c:180 audio_bridge_thread() write: OpenZAP/777 Bad Frame....[160] Bubye! 2008-01-25 15:48:36 [DEBUG] switch_core_session.c:358 switch_core_session_receive_message() Kill sofia/default/777@sipx.oneconv.com [BREAK] 2008-01-25 15:48:36 [DEBUG] switch_ivr_bridge.c:224 audio_bridge_thread() Kill OpenZAP/777 [BREAK] 2008-01-25 15:48:36 [DEBUG] switch_ivr_bridge.c:227 audio_bridge_thread() BRIDGE THREAD DONE [sofia/default/777@sipx.oneconv.com] 2008-01-25 15:48:36 [NOTICE] switch_ivr_bridge.c:257 audio_bridge_on_loopback() Hangup sofia/default/777@sipx.oneconv.com[CS_RESET] [NORMAL_CLEARING] 2008-01-25 15:48:36 [NOTICE] switch_core_session.c:707 switch_core_session_thread() Session 1 (OpenZAP/777) Ended 2008-01-25 15:48:36 [NOTICE] switch_core_session.c:709 switch_core_session_thread() Close Channel OpenZAP/777 [CS_HANGUP] 2008-01-25 15:48:36 [DEBUG] switch_channel.c:1317 switch_channel_perform_hangup() Kill sofia/default/777@sipx.oneconv.com[KILL] 2008-01-25 15:48:36 [DEBUG] switch_core_session.c:643 switch_core_session_signal_state_change() Kill sofia/default/777@sipx.oneconv.com [BREAK] 2008-01-25 15:48:36 [DEBUG] switch_core_state_machine.c:413 switch_core_session_run() sofia/default/777@sipx.oneconv.com Running State Change CS_HANGUP 2008-01-25 15:48:36 [DEBUG] switch_core_state_machine.c:439 switch_core_session_run() (sofia/default/777@sipx.oneconv.com) State HANGUP 2008-01-25 15:48:36 [DEBUG] mod_sofia.c:299 sofia_on_hangup() Channel sofia/default/777@sipx.oneconv.com hanging up, cause: NORMAL_CLEARING 2008-01-25 15:48:36 [DEBUG] mod_sofia.c:325 sofia_on_hangup() Sending BYE to sofia/default/777@sipx.oneconv.com 2008-01-25 15:48:36 [DEBUG] switch_core_state_machine.c:45 switch_core_standard_on_hangup() Standard HANGUP sofia/default/777@sipx.oneconv.com, cause: NORMAL_CLEARING 2008-01-25 15:48:36 [DEBUG] switch_core_session.c:701 switch_core_session_thread() Session 2 (sofia/default/777@sipx.oneconv.com) Locked, Waiting on external entities 2008-01-25 15:48:36 [NOTICE] switch_core_session.c:707 switch_core_session_thread() Session 2 (sofia/default/777@sipx.oneconv.com) Ended 2008-01-25 15:48:36 [NOTICE] switch_core_session.c:709 switch_core_session_thread() Close Channel sofia/default/777@sipx.oneconv.com [CS_HANGUP] Thanks in advance... BR, Irshad.