The NATted device (client B) is behind a USR 9112,
the other machine (with openser and client B) is on an
academic LAN. The fact, however, is that tshark indicates
that the original sdp (from B) reaches port 5060 of openser
but the invite that is thereafter forwarded to client A
contains a modified sdp.

Iñaki Baz Castillo wrote:

El Wednesday 31 October 2007 08:03:11 Bogdan-Andrei Iancu escribió:

Hi Kostas,

With the configuration you sent it is impossible for openser to change
the SDP - maybe you have some ALG that's doing that.....


Which router are you using? maybe a Zyxel P600 ?