Eric "ManxPower" Wieling wrote:

There are 2 issues here.

1) Asterisk does not have a RTP Jitter Buffer. RTP is what is used to transport audio for SIP (and other protocols). This means that ANY jitter on the SIP Phone -> Asterisk link will cause audio problems.

This is only an issue if your SIP phone has a poor/nonexistent jitter buffer.

The ideal scenario from a latency point of view is for the end points to handle jitter buffering. I use Polycom 500's with G711 over a path where jitter can be quite severe on occasion and they handle it very well.

Although I have not tried them, one would expect Cisco's to work well also.


Regards,

Richard
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