asterisk users - Aug 2010 - Mobile answer machine cut off

We are having some strange issue where a call from asterisk dials  a
mobile number. If the number answers, we put the call through to an
agent SIP phone. All works fine.

If, however, the call goes straight through to the mobiles voicemail
service *and* the agent phone is a Cisco 79xx, then the call is
dropped (from the mobile end) about 1 second into the call. If the SIP
phone is an Aastra9133i, then there is no problem.

Has anyone seen anything like this ?

Thanks

Julian

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Crap, sorry, meant to add that we are running 1.4 svn head

Julian

On 21 August 2010 23:38, Julian Lyndon-Smith <asterisk at dotr.com>
wrote:
> We are having some strange issue where a call from asterisk dials ?a
> mobile number. If the number answers, we put the call through to an
> agent SIP phone. All works fine.
>
> If, however, the call goes straight through to the mobiles voicemail
> service *and* the agent phone is a Cisco 79xx, then the call is
> dropped (from the mobile end) about 1 second into the call. If the SIP
> phone is an Aastra9133i, then there is no problem.
>
> Has anyone seen anything like this ?
>
> Thanks
>
> Julian
>
> --
> Follow "Ode To Politics" by HB Tasker at
http://twitter.com/HBTasker
>


-- 
Follow "Ode To Politics" by HB Tasker at http://twitter.com/HBTasker