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echo on external calls

Discussion in '3CX Phone System - General' started by smokeman, Dec 29, 2011.

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  1. smokeman

    Dec 10, 2010
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    Just wanted to note that we had issues with echo, and call quality on our external calling, with yealink phones. It turned out to be the g729 codec on our nexvortex trunk lines. We took off g729, leaving g711 as the only supported codec on the trunk, and it solved all our quality problems.
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