[cisco-voip] h323 (shuffle/hairpin) guru question

[Ryan Ratliff]

RTP should be terminated at both devices.  Do you have 'MTP Required'  
set on the IP gateway config in CCMAdmin?   This would cause the RTP  
to be terminated at the CM MTP resource (software by default) for all  
calls involving that gateway.

If you require the MTP but don't want it to flow across the WAN then  
simply configure a software MTP on a router at the remote site and  
register it with the CM.  Then configure the MRGL/MRG for the gateway  
such that it uses that remote site MTP.

-Ryan

On Nov 8, 2006, at 11:26 AM, Nick Marus wrote:

This might be a tuff one to explain...

I have callmanager 4.x at my core with cisco ip phones at remote  
sites across my wan. Also, at these remote sites i have a non-cisco  
ip phone system that has an ip trunk to the callmanager.

Everything is working fine, other than when the remote ip phone calls  
the phone system at the same site, the rtp goes twice across the wan,  
once to the callmanager, and then back again to the same same site  
and the ip phone pbx.

I have verified the media path on both the Cisco IP phone webpage and  
on the non-cisco pbx.

Is there any way to shuffle (non hairpin) a call so that it does not  
traverse the WAN? I have even placed a cisco ip2ip gateway in the mix  
at the remote site and built the ip trunk to it from the non-cisco  
pbx, but the call rtp still goes across the wan.

Any idea?

-- 
Nick Marus
nmarus at gmail.com
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