Hi Iñaki,
which kind of Alcatel PBX it is? I use OPTIONS with and without SDP in 200 without problems since several years with Alcatel OmniPCX Enterprise systems.
regards, Andreas
Am 12.07.2011 15:37, schrieb Iñaki Baz Castillo:
Hi, I've a stupid SIP PBX (Alcatel) which after registering sends a periodic OPTIONS with no RURI username and with "Accept: application/sdp". My proxy replies 200 in this case, but without SDP body (how could I know which codecs to show???) and unfortunately the Alcatel does not like it and send retransmissions of the requests (sad but true). After a while Alcatel determines that the proxy is down (pathetic but true).
So I must do a hack and reply 200 with SDP from Kamailio when the request is an OPTIONS and contains "Accept: application/sdp". I don't want to forward the OPTIONS to PSTN gateways behind Kamailio for different reasons.
Which would be the best way to do it? is it possible to add a spoofed body to a response replied stateless from Kamailio? Note: options_reply() in siputils module is not valid as AFAIK it does not show a SDP.
Thanks a lot.