[cisco-voip] Temp Fail IP Phone Message

[vemail at mac.com]

The "Temp Fail" message is a failure of the audio path connection  
usually due to DSP errors or codec issues.  There can be an issue  
with the DSP of the IP Phone (if it's only happening to one phone) or  
the DSP resources on a Voice Gateway.  If the error is occurring with  
multiple phones, before disconnecting the troubled calls, identify  
the gateway endpoint at the IP phone and check the log of the gateway  
endpoint for any DSP errors (assuming debug logging is active).  You  
can also try to query the DSP to identify which DSP is not responding.

Also, the connection failure could be caused by a codec negotiation  
issue such as (for instance) the endpoint does not have G.729  
resources available however calls to the location whereupon the  
gateway is located requires the use of the G.729 codec.

The issue can be hardware or software related.


On May 25, 2006, at 11:21 PM, Michael L. Windon wrote:

> 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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