Transfer failure on CME

Unanswered Question
Apr 29th, 2009
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Hi Pro,

My CME4.1 has been working for over a year. Recently, for only one of the DN's, when an external call is transfered, the caller hears a short MOH and nothing. The call still shows connected at the caller end. The transfer-to DN won't ring. Internal call transfer on this DN is fine. Other DN's do not have this issue. This DN is running on 2 ephones. I tried both full consult and blind transfer, all failed. Any troubleshooting advice is appreciated.



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Overall Rating: 4.5 (2 ratings)
Chuan Liu Wed, 04/29/2009 - 19:05
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debug ccsip all shows the failed transfer is that when transfer button is pressed, a SIP INVITE is sent to the caller; while the successful transfer in this same router shows a SIP UPDATE message is sent. Any ideas?

debug logs are attached.


Nicholas Matthews Tue, 05/19/2009 - 06:48
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Hi Larry,

It looks like the possible difference between a consultative transfer and a blind transfer. Blind transfer will update the caller ID, and consultative will put the call on hold.

You can see in the SDP that a=sendonly, which refers to a hold situation.


Chuan Liu Tue, 05/19/2009 - 12:06
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Hi Nick,

The problem was solved by upgrading the IOS. It was c2800nm-spservicesk9-mz.124-15.T1.bin; It is now c2800nm-spservicesk9-mz.124-15.T9.bin.


CiscoSeinajoki Tue, 05/19/2009 - 01:43
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Sorry, I do not have any answer, but I want to tell that I have the same problem. We have CUCM6.1 with extension mobility in use and there are two DN:s which can't get external calls. Internal calls are ok.

paolo bevilacqua Tue, 05/19/2009 - 13:26
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The thing is that this thread is about CME, not CCM.


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