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g729 passthrough?


Carl Johnson
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After a recent update to the CS4XX we are now having issues passing through G729 .. what changed and why? The proxy now gives a 488 message to the receiving or sending party .. but the phone and gateway advertise 18 being a codec on the list? Of course this works perfect on my Pro versions of the pbx?

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After a recent update to the CS4XX we are now having issues passing through G729 .. what changed and why? The proxy now gives a 488 message to the receiving or sending party .. but the phone and gateway advertise 18 being a codec on the list? Of course this works perfect on my Pro versions of the pbx?

 

The whole problem with G.729 is hold. When someone holds the call, the PBX has to do something, and that thing must perform G.729 encoding. That does take CPU horsepower, and there is no way around it. That is why we are not very excited about G.729 on an embedded system...

 

488? What is the PBX sending? Can you put the INVITE packet in the post?

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