Hello All, I'm trying to integrate OpenSIP with MS Teams. I'm using opensips with Topology Hiding module. Therefore, I'm adding FQDN to Contact and but MS Teams still not sending ACK to my 200 OK Shown in below.
Is there anything wrong with my 200Ok I send? SIP/2.0 200 OK VIA: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bKd29ef91c Record-Route: <sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr> From: "Ali Dogan" <sip:+<CALLING_PARTY>@sip.pstnhub.microsoft.com:5061;user=phone>;tag=90feae90c00c4745b162d0a69fd532bc To: <sip:+<Called_Party>@<MY_DOMAIN>:5061;user=phone>;tag=r4FmDXjKF7amm Call-ID: 778bfb54c5505df2b350f7c8ac8a6832 CSeq: 1 INVITE Contact: <sip:+<Called_Party>@<MY_DOMAIN>:5061;transport=tls;did=98f.cbe7a852> Accept: application/sdp Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY Require: timer Supported: timer, path, replaces Allow-Events: talk, hold, conference, refer Session-Expires: 3600;refresher=uac Content-Type: application/sdp Content-Disposition: session Content-Length: 510 X-Warning: CLI Should be in E164 Format Remote-Party-ID: "Called_PARTY" <sip:Called_PARTY@<MY_DOMAIN>>;party=calling;privacy=off;screen=no Best Regards, Ali Ali Dogan +44(0)3300 88 18 18 alido...@plan.com plan.com is the trading name of Plan Communications Limited, registered in the Isle of Man with company number 010273V and Registered Office at No.5 Victoria Street, Douglas, Isle of Man, IM1 2LR. This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Plan. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error.
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