asterisk users - May 2003 - G.729 Codec on Dialup

hi All,

We are using Asterisk server with sip phones (SJPhone).
On the local LAN, when we use the SJPhone as the SIP client, communication works
fine with no disturbances and noices. But when it comes to dialup connection we
harldy hear anything except a rough noice.
We have included G.729 Codec (Annex B) with the Asterisk server, and we added
the G.729 Codec to the SJPhone too. But it seems like SJPhone is using a version
of G.729 other than Codec G.729 (Annex B) , probably 'Annex A'.
What we want is to have a smoother communication when we use a SIP phone on the
Dialup connection.

Can anybody come up with a good idea for this problems,
Thank you very much,
Surajee


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> On the local LAN, when we use the SJPhone as the SIP client, communication
works fine with no disturbances and noices. But when it comes to dialup
connection we harldy hear anything except a rough noice.
> We have included G.729 Codec (Annex B) with the Asterisk server, and we
added the G.729 Codec to the SJPhone too. But it seems like SJPhone is using a
version of G.729 other than Codec G.729 (Annex B) , probably 'Annex A'.
> What we want is to have a smoother communication when we use a SIP phone on
the Dialup connection.
If you purchased G729 from Digium, you got the "Annex A" even though
the
file is, confusingly, called codec_g729b.so

Mark