assuming that the phones are ok, most probably the cause may be the lack
of bandwidth or the delay on the net.
So try yo use a lighter codec (like G729, iLBC, GSM, etc)
For delay- there is not much to do....only try to remove the media
relays on the path.
When i making a call, the voice quality is not well.it's entrench. What
can i do to have a better voice quality?
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