Re: [Sip-implementors] Question about B2BUA and 200OK

2014-06-25 Thread onewhoknows
Thanks, Brett. Am I correct in thinking that the PBX should be sending an ACK to the 200 OK not the proxy? PBX PROXY SBC On Tue, Jun 24, 2014 at 1:43 PM, Brett Tate br...@broadsoft.com wrote: Based on that 200 OK, should the PBX respond with an ACK directly back to the proxy, or to the

Re: [Sip-implementors] Question about B2BUA and 200OK

2014-06-25 Thread Brett Tate
Am I correct in thinking that the PBX should be sending an ACK to the 200 OK not the proxy? I don't understand that sentence; but it sounds like the answer is no. Within your original question, the PBX and proxy both added Record-Route entries (as shown within copied 200 OK snippet). The

[Sip-implementors] Question about B2BUA and 200OK

2014-06-24 Thread onewhoknows
Hi all and thanks for reading. Here is the scenario: SIP Phone PBX Proxy SBC (acting as B2BUA) The INVITE reaches the SBC and it responds with a 183 Session Progress then 200 OK. The call is dropped after 15 seconds because the SBC never receives an ACK to the 200 OK. The 200 OK from the

Re: [Sip-implementors] Question about B2BUA and 200OK

2014-06-24 Thread Brett Tate
Based on that 200 OK, should the PBX respond with an ACK directly back to the proxy, or to the SBC? Based upon what you provided, the ACK should traverse the Route locations until it reaches the SBC similar to the BYE within RFC 3621 section 16.12.1.1 example. Within your question, all of the