Hi, (Filed in JIRA FS-2899. Please let me know if posting this on the list as well is frowned upon.) I'm using switch_limit in a loopback extension with the following problematic dialplan fragment (full dialplan context at end of message): <extension name="limit_exceeded"> <condition field="destination_number" expression="^limit_exceeded$"> <action application="hangup" data="NORMAL_CIRCUIT_CONGESTION"/> </condition> </extension> This works fine in MOST cases with the expected result: switch_ivr_originate.c:3448 Originate Resulted in Error Cause: 34 [NORMAL_CIRCUIT_CONGESTION] Every once in a while though this very same extension will magically yield: switch_ivr_originate.c:3448 Originate Resulted in Error Cause: 19 [NO_ANSWER] Looking at the log snippets pasted below the correct result (34) appears when this sequence of events occurs (first snippet): mod_loopback.c:425 Hangup loopback/18884447693-a [CS_CONSUME_MEDIA] [NORMAL_CIRCUIT_CONGESTION] switch_ivr_originate.c:3448 Originate Resulted in Error Cause: 34 [NORMAL_CIRCUIT_CONGESTION] The incorrect answer (19) appears whenever this sequence shows in the logs: switch_ivr_originate.c:3448 Originate Resulted in Error Cause: 19 [NO_ANSWER] mod_loopback.c:425 Hangup loopback/18884447701-a [CS_CONSUME_MEDIA] [NORMAL_CIRCUIT_CONGESTION] Pouring over my logs this ALWAYS is the case. Whenever the wrong error cause appears the switch_ivr_originate call precedes the mod_loopback call. Conversely whenever the correct error cause is given the call sequence is reversed. I can reproduce this at will by rapidly invoking the loopback extension in the dialplan pasted at the bottom of this mail. Any help is appreciated. Cheers, -Slim ----8<----8<----8<----8<----8<----8<----8<---- EXECUTE loopback/18884447693-b hangup(NORMAL_CIRCUIT_CONGESTION) 2010-12-05 01:27:13.318020 [DEBUG] switch_channel.c:2455 (loopback/18884447693-b) Callstate Change EARLY -> HANGUP 2010-12-05 01:27:13.318020 [NOTICE] mod_dptools.c:906 Hangup loopback/18884447693-b [CS_EXECUTE] [NORMAL_CIRCUIT_CONGESTION] 2010-12-05 01:27:13.319023 [DEBUG] switch_channel.c:2471 Send signal loopback/18884447693-b [KILL] 2010-12-05 01:27:13.319023 [DEBUG] mod_loopback.c:468 loopback/18884447693-b CHANNEL KILL 2010-12-05 01:27:13.319023 [DEBUG] switch_core_session.c:1083 Send signal loopback/18884447693-b [BREAK] 2010-12-05 01:27:13.319023 [DEBUG] mod_loopback.c:468 loopback/18884447693-b CHANNEL KILL 2010-12-05 01:27:13.320024 [DEBUG] switch_core_session.c:1993 loopback/18884447693-b skip receive message [APPLICATION_EXEC_COMPLETE] (chann el is hungup already) 2010-12-05 01:27:13.320024 [DEBUG] switch_core_state_machine.c:366 (loopback/18884447693-b) State EXECUTE going to sleep 2010-12-05 01:27:13.320024 [DEBUG] switch_core_state_machine.c:320 (loopback/18884447693-b) Running State Change CS_HANGUP 2010-12-05 01:27:13.321011 [DEBUG] switch_core_state_machine.c:557 (loopback/18884447693-b) State HANGUP 2010-12-05 01:27:13.321983 [DEBUG] mod_loopback.c:414 loopback/18884447693-b CHANNEL HANGUP 2010-12-05 01:27:13.321983 [DEBUG] switch_channel.c:2455 (loopback/18884447693-a) Callstate Change EARLY -> HANGUP 2010-12-05 01:27:13.321983 [NOTICE] mod_loopback.c:425 Hangup loopback/18884447693-a [CS_CONSUME_MEDIA] [NORMAL_CIRCUIT_CONGESTION] 2010-12-05 01:27:13.322995 [DEBUG] switch_ivr_originate.c:3448 Originate Resulted in Error Cause: 34 [NORMAL_CIRCUIT_CONGESTION] ----8<----8<----8<----8<----8<----8<----8<---- EXECUTE loopback/18884447701-b hangup(NORMAL_CIRCUIT_CONGESTION) 2010-12-05 01:27:14.364448 [DEBUG] switch_channel.c:2455 (loopback/18884447701-b) Callstate Change EARLY -> HANGUP 2010-12-05 01:27:14.365470 [NOTICE] mod_dptools.c:906 Hangup loopback/18884447701-b [CS_EXECUTE] [NORMAL_CIRCUIT_CONGESTION] 2010-12-05 01:27:14.365470 [DEBUG] switch_channel.c:2471 Send signal loopback/18884447701-b [KILL] 2010-12-05 01:27:14.365470 [DEBUG] mod_loopback.c:468 loopback/18884447701-b CHANNEL KILL 2010-12-05 01:27:14.365470 [DEBUG] switch_core_session.c:1083 Send signal loopback/18884447701-b [BREAK] 2010-12-05 01:27:14.366485 [DEBUG] mod_loopback.c:468 loopback/18884447701-b CHANNEL KILL 2010-12-05 01:27:14.366485 [DEBUG] switch_core_session.c:1993 loopback/18884447701-b skip receive message [APPLICATION_EXEC_COMPLETE] (chann el is hungup already) 2010-12-05 01:27:14.366485 [DEBUG] switch_core_state_machine.c:366 (loopback/18884447701-b) State EXECUTE going to sleep 2010-12-05 01:27:14.367508 [DEBUG] switch_core_state_machine.c:320 (loopback/18884447701-b) Running State Change CS_HANGUP 2010-12-05 01:27:14.369585 [DEBUG] switch_core_state_machine.c:557 (loopback/18884447701-b) State HANGUP 2010-12-05 01:27:14.369585 [DEBUG] mod_loopback.c:414 loopback/18884447701-b CHANNEL HANGUP 2010-12-05 01:27:14.369585 [DEBUG] switch_channel.c:2455 (loopback/18884447701-a) Callstate Change EARLY -> HANGUP 2010-12-05 01:27:14.369585 [DEBUG] switch_ivr_originate.c:3448 Originate Resulted in Error Cause: 19 [NO_ANSWER] 2010-12-05 01:27:14.369585 [NOTICE] mod_loopback.c:425 Hangup loopback/18884447701-a [CS_CONSUME_MEDIA] [NORMAL_CIRCUIT_CONGESTION] ----8<----8<----8<----8<----8<----8<----8<---- <context name="tech-outbound"> <extension name="tech-outbound"> <condition field="destination_number" expression="^1888(\d{7})$"> <action application="info"/> <action application="set" data="loopback_bowout=false"/> <action application="limit" data="db outgoing goip 1" /> <action application="bridge" data="{ignore_early_media=true}sofia/internal/${destination_number}@192.168. 3.11:5060"/> </condition> </extension> <extension name="limit_exceeded"> <condition field="destination_number" expression="^limit_exceeded$"> <action application="<nothing> OR <answer> OR <pre_answer>"/> <!-- Tried all 3 variations, no difference --> <action application="hangup" data="NORMAL_CIRCUIT_CONGESTION"/> </condition> </extension> </context>