SBC doesn't pass 200 OK without SDP
Hello,
This is the example of a call we have, we are getting 200 OK without SDP from the provider and SBC is not passing that 200 OK. From what I saw in the RFCs 200 OK without SDP is possible only if we have this SDP in 1xx messages before. Is there any possibility to add SDP in one of the 1xx previous or 200 OK? Is there anything that we can do but ask a provider to send us correct messages?
Best regards