Hey guys,

We have asterisk 1.2.7.1 running and today i got following error message. and 
users started complain regarding call issue. after reboot everything comes back 
to normal. I just want to know what happened ?


Feb 25 11:27:11 WARNING[10042] app_meetme.c: Error setting conference
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to set audio mode on channel 
1 to 1
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to set audio mode on '1'
Feb 25 11:27:11 WARNING[10042] chan_zap.c: zt confmute(0) failed on channel 1: 
Bad file descriptor
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to restore gains: Bad file 
descriptor
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to set law on channel 1 to 
default
Feb 25 11:27:11 WARNING[10042] chan_zap.c: pri_disconnect failed
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to hangup line Zap/1-1
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to disable echo cancellation 
on channel 1
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Failed to reset conferencing on 
channel 1!
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to disable echo cancellation 
on channel 1
Feb 25 11:27:11 WARNING[10042] chan_zap.c: Unable to set audio mode on channel 
1 to 0
Feb 25 11:28:10 WARNING[17550] chan_zap.c: Unable to set audio mode on channel 
1 to 1
Feb 25 11:28:10 WARNING[17550] chan_zap.c: Unable to set law on channel 1
Feb 25 11:28:10 WARNING[17550] chan_zap.c: Unable to set gains on channel 1
Feb 25 11:28:10 WARNING[17550] chan_zap.c: Unable to get parameters, assuming 
MULAW
Feb 25 11:28:10 WARNING[17550] chan_zap.c: Unable to set audio mode on '1'
Feb 25 11:28:10 WARNING[17550] chan_zap.c: zt confmute(0) failed on channel 1: 
Inappropriate ioctl for device
Feb 25 11:28:10 WARNING[17550] chan_zap.c: Unable to enable echo cancellation 
on channel 1
Feb 25 11:28:10 WARNING[17550] chan_zap.c: Unable to enable echo cancellation 
on channel 1
Feb 25 11:28:11 WARNING[10086] chan_zap.c: Unable to set linear mode on channel 
1
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to set audio mode on channel 
1 to 1
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to set audio mode on '1'
Feb 25 11:28:34 WARNING[10086] chan_zap.c: zt confmute(0) failed on channel 1: 
Inappropriate ioctl for device
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to restore gains: 
Inappropriate ioctl for device
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to set law on channel 1 to 
default
Feb 25 11:28:34 WARNING[10086] chan_zap.c: pri_disconnect failed
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to hangup line Zap/1-1
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to disable echo cancellation 
on channel 1
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Failed to reset conferencing on 
channel 1!
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to disable echo cancellation 
on channel 1
Feb 25 11:28:34 WARNING[10086] chan_zap.c: Unable to set audio mode on channel 
1 to 0

                                          
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