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SIP Trunk IPCelerate Call Recording

I require some assistance.  My setup is:  Verizon SIP Trunk----CUBE-----(H323)CM4.1.

Off of this I have some IP Phones that I need to record calls via IPCelerate.  IPCelerate tells me that they can only record in G729a or G711u.

My trunk uses MTP and Outbound Fast Start.  How can I do one of the following:

1.  Setup CUBE to use a transcoder to merge a g711 stream from the IP Phone to a g729 stream to Verizon.  Normally this scenario comes to play when integrating VM Servers that do not support g729, but in this case it is the phone that I want to invoke the transcoder, however, how can I force it to invoke the transcoder when it can do g729 natively.

2.  Setup my trunk to do end to end g729a.  I have not been able to find a good document on the CUBE configuration for this part.  How do I force G729a to be in the SDP out to the SBC when that really is not a selectable codec?  I tried changing the codec complexity on the voice-card, but that did not seem to work.

Any help on this would be appreciated.

Thank you.

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