[cisco-voip] No More MTP Resources Available

[Ryan Ratliff]

Additionally check to see if you have "MTP Required" set for your H. 
323 gateway.  This setting will cause CM to allocate an MTP resource  
for each call involving the gateway.  The calls won't fail if no MTPs  
are available but supplementary services (hold, transfer, etc) will  
not function for that call.

Also note that if no codec is specified on an H.323 voip dial-peer  
the gateway uses g.729.  In this case calls to phones would work but  
any time the gateway is conferenced or hits a g.711 only device a  
transcoder will be required.  In this case you can see reorder tone  
played to one or more parties.

-Ryan

On Jun 5, 2006, at 3:30 PM, Scott Coner ((US)) wrote:

Are you specifying G.711 in your H.323 dial peers?  Either with the  
codec command or a ‘voice-class’.



From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip- 
bounces at puck.nether.net] On Behalf Of Todd Franklin
Sent: Monday, June 05, 2006 3:17 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] No More MTP Resources Available



Hey all.

We recently converted one of our gateways to H323 because we needed a  
lot of POTS lines and Caller ID, and this appeared to be the only way  
to do it.

Ever since, my CCM in the Windows Event Viewer, shows lots of  
occurences of this message: "No More MTP Resources Available."   
Occasionally, after this message, we will drop a call, or a phone  
(oddly enough, in another location not attaced to the H323 gateway)  
will unregister without warning.

Is the MTP resource issue related to the H323 thing?  A friend told  
me I can add more MTPs by simply installing the software on another  
NT/Win2x server.

Anyone?





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