On 16 Sep 2006, at 20:38, Net Nut wrote:

So with that said, can anyone recommend a way that I can get a sip
client on a cell phone that uses H.263 and amr to talk to an asterisk
system?
Is it just not possible because of licensing? It sounds kind of lame to
have a sip client that can't talk to anything else because of codecs..

Well Asterisk does not _have_ to have an amr codec for you
to be able to use your handset. If you have several of these
handsets or other devices that support amr, then asterisk can
route calls between them, just passing the stream through.

If you want any of the interesting asterisk features, then
it will need to transcode, and then Steve's right, not only do you have
to add codec code to Asterisk (which is almost certainly a GPL violation) you also have to pay the patent holder for any commercial use of the codec.

Your best hope is if a few of us can persuade Digium to support amr
in the same way that they license g729 .

Tim.
Tim Panton

www.mexuar.com



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