3 Aug
2005
3 Aug
'05
3:32 p.m.
Noel Sharpe wrote:
--
Andres
Network Admin
http://www.telesip.net
Andres
If I set my UA (which is behind a NAT Firewall) to use 10ms frames
with the G729 codec, there is one way audio from the UA to the PSTN.
The PSTN gateway has a public IP Address. If I use any other codec
(e.g. gsm, uLaw) there is no problem - the audio works both ways. If
I use G729 with 40ms frames, there is also no issue - it works
perfectly. Becasue the UA is behind a NAT, I am forcing rtp proxy
use, but as this works with codecs other than G729 with 10ms frames, I
don't think that this could be the issue. My question is anyone else
seeing this issue, or conversely does anyone else have this working?
Noel
I just tried it using a PAP2 in my office and it works fine with 10ms
frames (confirmed using Ethereal). Maybe your gateway is the one that
does not like 10ms G729 frames. Why don't you try a call between 2 UAs
using the rtpproxy to verify.
Cheers.