You are right, some softphone like exten alow us to select codec G.729, ILBC, GSM, G711. Some other not able to select codec.
if you can't find codec supported by your softphone from softphone vendor ...
What codec V-Phone used? I heard G.729 is the best codec for best quality and low bitrate.
I found plugin codec for G.729 http://www.vidosystem.com/download/vidog729.exe
the support said it is g729 ...
Does anyone have try Microsoft RTC sip softphone?
i found a link for g.729 acm driver plugin codec http://www.vidosystem.com/download/vidog729.exe
I can use it for another voip provider.
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