[cisco-voip] IOS 15.1(2)T and SIP Call Preservation

[Mike Lydick]

Would you have to set the following to enable to get around early offer
issues?

*SIP Rel1XX*


Best Regards,

Mike Lydick




---------- Forwarded message ----------
From: Justin Steinberg <jsteinberg at gmail.com>
Date: Wed, Nov 17, 2010 at 9:00 PM
Subject: Re: [cisco-voip] IOS 15.1(2)T and SIP Call Preservation
To: "Jason Aarons (US)" <jason.aarons at us.didata.com>
Cc: "cisco-voip (cisco-voip at puck.nether.net)" <cisco-voip at puck.nether.net>


Just a thought - are you invoking CM MTPs?  If so, that would be a good
reason for the call drop.

On Wed, Nov 17, 2010 at 7:27 PM, Jason Aarons (US) <
jason.aarons at us.didata.com> wrote:

> 7945 SIP45.9-0-3S--------CallManager 8.0(3a)----SIP Trunk----3845/IOS
> 151-2.T1-------PRI/PSTN
>
>
>
> The below URL states Call Preservation is on by default on SIP Trunks in
> CallManager.
>
>
>
> However in testing SIP SRST I found my call to PSTN dropped when
> CallManager went down. Maybe I’m missing some commands, but I can’t find a
> Cisco.com document about SIP Call Preservation with SRST/CallManager IOS 15.
>
>
>
> http://www.networkworld.com/community/node/29909
>
>
>
>
>
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