[cisco-voip] CUCM 6.1 and SIP

[Ryan Ratliff]

That's correct.  CCM will allocate an MTP if the capabilities advertised by
the SIP device do not match what the phone can do.  Any device not in an MRG
can still be used by any device in the system.  Think of it like the <None>
partition, there is a <None> MRG that any device can use, and any media
resource not in another MRG is in the <None> MRG. 


-Ryan 
-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of
dschulz at skyline-ats.com
Sent: Thursday, June 05, 2008 12:20 PM
To: Philip Walenta
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CUCM 6.1 and SIP

When you say you did not assign MTP resources, I am assuming that you didn't
assign it to a MRG for that phone.  However, it will still use the MTP for
the dialing translation (inband vs. out-of-band), which I am assuming you
have in the default MRG (not assigned to a configured MRG). 
In this case, the MTP still resides in CUCM.  HTH,

Dave


> I'm attempting to make calls between SIP and SCCP based devices.
>
> What I'm seeing in my traces is that ALL audio goes through the CUCM 
> server and not direct RTP between devices like I would have expected.
>
> I do not have ANY MTP resources assigned to these devices, and DTMF 
> intercept is off (for now).
>
> Has anyone run into this before?
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> cisco-voip at puck.nether.net
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