[Aug 12 22:13:39]     -- Executing [0****@zamestnanci:4] Dial("Skinny/687@PAM-42", "SIP/bill-gw/0****") in new stack
[Aug 12 22:13:39]   == Using SIP RTP CoS mark 5
[Aug 12 22:13:39]     -- Called bill-gw/0****
[Aug 12 22:13:40]     -- SIP/bill-gw-0842e1a8 is making progress passing it to Skinny/687@PAM-42
[Aug 12 22:13:40]     -- SIP/bill-gw-0842e1a8 is ringing
[Aug 12 22:14:01] WARNING[13958]: pbx.c:3662 __ast_pbx_run: Skinny/687@PAM-42 already has PBX structure??
[Aug 12 22:14:01]     -- Executing [0****@zamestnanci:4] Dial("Skinny/687@PAM-42", "SIP/bill-gw/0****") in new stack
[Aug 12 22:14:01] WARNING[13958]: app_dial.c:1447 dial_exec_full: Skipping dialing interface 'SIP/bill-gw/0****' again since it has already been dialed
[Aug 12 22:14:01]   == Spawn extension (zamestnanci, 0****, 4) exited non-zero on 'Skinny/687@PAM-42'
[Aug 12 22:14:01]     -- Executing [h@zamestnanci:4] Hangup("Skinny/687@PAM-42", "") in new stack
[Aug 12 22:14:01]   == Spawn extension (zamestnanci, h, 4) exited non-zero on 'Skinny/687@PAM-42'
[Aug 12 22:14:01] WARNING[13958]: channel.c:1610 ast_hangup: Hard hangup called by thread -1237992560 on Skinny/687@PAM-42, while fd is blocked by thread -1236518000 in procedure ast_waitfor_nandfds!  Expect a failure
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:588 __ast_pthread_mutex_lock: channel.c line 1842 (ast_waitfor_nandfds): Error obtaining mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:692 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): mutex '(channel lock)' freed more times than we've locked!
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:720 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): Error releasing mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:588 __ast_pthread_mutex_lock: channel.c line 1842 (ast_waitfor_nandfds): Error obtaining mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:692 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): mutex '(channel lock)' freed more times than we've locked!
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:720 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): Error releasing mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:588 __ast_pthread_mutex_lock: channel.c line 1842 (ast_waitfor_nandfds): Error obtaining mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:692 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): mutex '(channel lock)' freed more times than we've locked!
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:720 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): Error releasing mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:588 __ast_pthread_mutex_lock: channel.c line 1842 (ast_waitfor_nandfds): Error obtaining mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:692 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): mutex '(channel lock)' freed more times than we've locked!
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:720 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): Error releasing mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:588 __ast_pthread_mutex_lock: channel.c line 1842 (ast_waitfor_nandfds): Error obtaining mutex: Invalid argument
[Aug 12 22:14:01] ERROR[13957]: /root/src/asterisk136818/include/asterisk/lock.h:692 __ast_pthread_mutex_unlock: channel.c line 1862 (ast_waitfor_nandfds): mutex '(channel lock)' freed more times than we've locked!