1. I assume that if both endpoints are capable of negotitaing and using different codecs, then transcoding is not required. i.e calls between two cisco phones. 1 uses g.711 and the other uses g.729. then the phones will sort out what uses what.
2. If I have a call between 2 sites on the same cluster and they are set to use g.711 locally but across the site g.729. Do I need to use transcoding or will the phones negotiate this themselves?
3. if in the above (point 2) the call passes through each sites voice gateway, would I need transcoding?
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