[Freeswitch-users] Codec Negotiation

Is this message flow valid? FS ---------------- MyProvider ---> INVITE (w/SDP G729, G711a, G711u) <--- 100 Trying <--- 183 Session Progress (w/SDP G729, G711a, G711u) <--- 200 OK (w/SDP G729, G711a, G711u) What is strange to me is that my provider send back a 183 Session Progress with all codec list of Freeswitch INVITE (I expect only the choosen codec). It's this message flow correct? Stephen