[cisco-voip] Temp Fail IP Phone Message

[Michael L. Windon]

All, any help you could you could provide would be greatly appreciated.

 

Environment:

 

CallManager 4.1.3 SR3a

3745 14.4.6.T2

8 T1 - Pri MGCP Connected to a MLS-100 using Pri-NI2 ISDN type

 

Situation:

 

During a circuit switch bound call, the cisco IP phone which are 7911 and
7960 display a Temp Fail message on the bottom of the screen. Once this
happens the call continues but the distant-end does not hear any buttons
pushed. This is not good because users can't enter in information into
systems like voice mail or any other prompt and collect applications.

 

What I have tried:

Upgrading IOS 3745

Using the latest device pack April 2006

Verified routing between ip phone and call manager 

Search through detail traces

Called tac and send traces, and isdn q931 debugs, mgcp packet debugs.

 

I have many people tell me that this message is caused when the IP phone
stop receiving ack of its keep alive messages to or from the Call Manager,
but I assure you the call manager is not down. I can ping and traceroute
directly to the phone from the callmanager during a call. The phone is also
registered with the call manager and is not dropping into SRST mode. I don't
know where to go from here. Does anyone know of another way to watch or
detect this event on the call manager other then trace logs, as I have not
found anything of interested in them or don't know how to read them. Like I
said before any help would be greatly appreciated.

 

Mike

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