FXO Not disconnecting

Unanswered Question
Dec 7th, 2009

Is there any way to have my FXO port disconnect after a certain time limit?  I have calls staying up for over 1 hour and I want them to die after 30 minutes.  Can I do this with an FXO port?


I have this problem too.
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ragulan_dms Mon, 12/07/2009 - 22:09


  It is a common problem with loop start signalling. Can you try to use ground start signaling rather than loop start signalling and see whether it help ?


asandborgh Tue, 12/08/2009 - 06:00

I'm not sure if this is what you are asking for - this applies to a situation where someone hangs up and

the FXO port does not disconnect - try the following commands -

voice-port x/x/x
supervisory disconnect dualtone mid-call
timeouts call-disconnect 1
timeouts wait-release 1

timing guard-out 500

no shut



infosateng Tue, 12/08/2009 - 07:56

What I am trying to acomplish in this one is I want any call to drop after 30 minutes.  Basically I want a timer, that says after 30 minutes where someone is still chatting away or not, drop the call, close the FXO port.


asandborgh Tue, 12/08/2009 - 08:06

This Service Parameter will do what you want - but it is global....

Maximum Call Duration Timer:  This parameter specifies the minutes that a call can remain active before Cisco CallManager clears it. A value of zero disables the timer.
This is a required field.
Default:  720
Minimum:  0
Maximum:  35791
Unit: min
infosateng Tue, 12/08/2009 - 08:32

Thanks for the comments, but what is the actual command?

Also I am not using a Call Manager here, so not sure if it will apply.


asandborgh Tue, 12/08/2009 - 08:35

Sorry, that is a CCM service parameter.  I know of no IOS command that will disconnect

an FXO port after a certain call duration.

Anyone else?

Good Luck!



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