cucm transcode issue

[gushuhua]

The CUCM  has a h.323 gateway and the dial-peer of the gateway config as below:

dial-peer voice 105 voip

 destination-pattern 404$

 session target ipv4:10.3.11.48

 dtmf-relay rtp-nte h245-alphanumeric

 codec g711ulaw

 I  configured the   codec of cisco ip communicator to G.729r8  manually  checking  the option "Optimize for low bandwith"  .  The media resouce list has one media resource  which contains an transcode resource  of which ip addres is  another  gateway.

The sccp config of the another gateway as belows:

sccp local FastEthernet0/1
sccp ccm 10.3.11.48 identifier 1 priority 1 version 7.0
sccp
!
sccp ccm group 1
associate ccm 1 priority 1
associate ccm 2 priority 2
associate profile 1 register MTP0018ba0e817b
!
dspfarm profile 1 transcode
codec g711ulaw
codec g729r8
codec g711alaw
codec g729ar8
codec g729abr8
maximum sessions 3
associate application SCCP
!

But when I  taked an inbound call  from pstn and dial the extension of the ip communicator, the  ip communicator can not pick up the call and the call fails.

 The transcoder is a device that converts an input stream from one codec into an output stream that uses a different codec.MY question is why the transcode on another sip gateway can not take effect? 

[Roger Kallberg]

Have you assigned the MRGL to both the voice gateway and the CIPC device?

Apart from this, are you using VAD? If not you can remove all the codec variants in the transcoder resource that has a “b” in the name. This would bring you down in complexity usage for the dspfarm so you can increase the number of max sessions.

[gushuhua]

 After I checked the  gataway's Device Pool and the media resource configuration, I found the device pool of the transcode by which the gateway used is different form the IP communicator. That is why the gateway can not allocated the transcode resource.  

Thank for your reply.