I was debugging some problems with .call file on a zap channel, and I see this error “Exception on 16” in the debug log. It happens with all my zap calls. This call did go through just fine, but I would like to know what it means.
Mar 6 08:27:03 VERBOSE[12354] logger.c: -- Executing Set("SIP/103-09acccd8", "OUTNUM=www2294069") in new stack
Mar 6 08:27:03 DEBUG[12354] pbx.c: Function result is 'ZAP/4'
Mar 6 08:27:03 VERBOSE[12354] logger.c: -- Executing Set("SIP/103-09acccd8", "custom=ZAP/4|g") in new stack
Mar 6 08:27:03 VERBOSE[12354] logger.c: == Setting global variable 'custom' to 'ZAP/4'
Mar 6 08:27:03 DEBUG[12354] pbx.c: Expression result is '0'
Mar 6 08:27:03 VERBOSE[12354] logger.c: -- Executing GotoIf("SIP/103-09acccd8", "0?customtrunk") in new stack
Mar 6 08:27:03 DEBUG[12354] pbx.c: Not taking any branch
Mar 6 08:27:03 VERBOSE[12354] logger.c: -- Executing Dial("SIP/103-09acccd8", "ZAP/4/www2294069|300|") in new stack
Mar 6 08:27:03 DEBUG[12354] chan_zap.c: Dialing 'www2294069'
Mar 6 08:27:03 DEBUG[12354] chan_zap.c: Deferring dialing...
Mar 6 08:27:03 DEBUG[2520] channel.c: Avoiding initial deadlock for 'Zap/4-1'
Mar 6 08:27:03 VERBOSE[12354] logger.c: -- Called 4/www2294069
Mar 6 08:27:04 DEBUG[12354] chan_zap.c: Exception on 16, channel 4
Mar 6 08:27:04 DEBUG[12354] chan_zap.c: Got event Hook Transition Complete(12) on channel 4 (index 0)
Mar 6 08:27:07 DEBUG[12354] chan_zap.c: Exception on 16, channel 4
Mar 6 08:27:07 DEBUG[12354] chan_zap.c: Got event Dial Complete(9) on channel 4 (index 0)
Mar 6 08:27:07 DEBUG[12354] chan_zap.c: Enabled echo cancellation on channel 4
Mar 6 08:27:07 DEBUG[12354] chan_zap.c: Engaged echo training on channel 4
Mar 6 08:27:09 DEBUG[12354] chan_zap.c: Exception on 16, channel 4
Mar 6 08:27:09 DEBUG[12354] chan_zap.c: Got event Dial Complete(9) on channel 4 (index 0)
Mar 6 08:27:09 DEBUG[12354] chan_zap.c: Echo cancellation already on
Mar 6 08:27:09 VERBOSE[12354] logger.c: -- Zap/4-1 answered SIP/103-09acccd8