Can not make Outgoing Calls using 7911 IP phones..

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Aug 18th, 2010
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Hello,


I have 2821 Communication manager express with 6 Nos. 7942G IP Phones & 10 Nos. 7911 IP Phones in network.


Everything working fine.  But, Once every 2 months, i am getting problem with couple of 7911 IP Phones that it can receive incoming calls, But CAN NOT MAKE OUTGOING CALLS.


In order to resolve this problem, I am creating new ephone-dn directory number and assinging same ephone-dn to specified ephone number.  & removing old ephone-dn directory number for same.  Then those particular 7911 IP Phones can make outgoing calls.



and i have to reset those IP PHones & have to reconfigure it.



Is there any specific solution or troubleshooting for this kind of problem???

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paolo bevilacqua Wed, 08/18/2010 - 06:59
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The user that use 7911 phone's can hear any error message?


No because that's a typical memory depletion software failure.

Upgrading phone firmware fixes it as I have indicated above.

philip.e.denton Wed, 08/18/2010 - 07:43
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By "memory depletion" do you mean a memory leak in IOS?

paolo bevilacqua Wed, 08/18/2010 - 07:59
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More likely in the phone.

But since one has to work on the issue anyway, that's a good occasion to update to latest stable code anyway.

philip.e.denton Wed, 08/18/2010 - 08:15
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Stable according to who?  TAC?  Hahahahaha

paolo bevilacqua Wed, 08/18/2010 - 06:10
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Update IOS and phone firmware.

Steven Holl Wed, 08/18/2010 - 08:59
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It could be that a DN is getting stuck in a bad state.  When the issue occurs, you can verify that with this output during the issue:


sh voice call sum

sh telephony-service dial-peer


If the associated port for the DN is stuck in something like S_OPEN_PEND, something is causing the DN's state machine to not progress.


High CPU can cause call rejection, too.  You may also want to get 'debug voip ccapi inout' during a call failure and see what that yields.



EDIT: I just read that inbound calls still work to these phones.  I don't suspect something with the DN, then.  Get 'debug voip ccapi inout' during a call failure and we can see what the issue is.


Message was edited by: Steven Holl

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