Calls disconnect after 15min 30sec

Hi,

I have tried going through the logs but I don’t understand them all to well yet since I have only started working with sip not too long ago. The phones keep disconnecting after 15minutes and 30 seconds every call.

Here are the logs that I get and would appreciate any help with it:

[2013-07-03 14:34:28] DEBUG[3040] sched.c: Request to schedule in the past?!?!
[2013-07-03 14:34:28] DEBUG[3040] sched.c: Request to schedule in the past?!?!
[2013-07-03 14:38:14] DEBUG[3040] sched.c: Request to schedule in the past?!?!
[2013-07-03 14:43:50] DEBUG[3040] sched.c: Request to schedule in the past?!?!
[2013-07-03 14:49:26] DEBUG[3040] sched.c: Request to schedule in the past?!?!
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: == Spawn extension (macro-dial, s, 7) exited non-zero on ‘SIP/1---------7-b0’ in macro ‘dial’
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: == Spawn extension (macro-dial, s, 7) exited non-zero on ‘SIP/1---------7-b0’ in macro ‘exten-vm’
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: == Spawn extension (macro-dial, s, 7) exited non-zero on ‘SIP/1---------7-b0’
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Executing [[email protected]:1] Macro(“SIP/1---------7-b0”, “hangupcall”) in new stack
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Executing [[email protected]:1] GotoIf(“SIP/1---------7-b0”, “1?skiprg”) in new stack
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Goto (macro-hangupcall,s,4)
[2013-07-03 14:50:27] DEBUG[29954] app_macro.c: Executed application: GotoIf
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Executing [[email protected]:4] GotoIf(“SIP/1---------7-b0”, “1?skipblkvm”) in new stack
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Goto (macro-hangupcall,s,7)
[2013-07-03 14:50:27] DEBUG[29954] app_macro.c: Executed application: GotoIf
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Executing [[email protected]:7] GotoIf(“SIP/1---------7-b0”, “1?theend”) in new stack
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Goto (macro-hangupcall,s,9)
[2013-07-03 14:50:27] DEBUG[29954] app_macro.c: Executed application: GotoIf
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: – Executing [[email protected]:9] Hangup(“SIP/1---------7-b0”, “”) in new stack
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: == Spawn extension (macro-hangupcall, s, 9) exited non-zero on ‘SIP/1---------7-b0’ in macro ‘hangupcall’
[2013-07-03 14:50:27] VERBOSE[29954] logger.c: == Spawn extension (macro-hangupcall, s, 9) exited non-zero on ‘SIP/1---------7-b0’