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>Route: <sip:sip-du-a-au.pstnhub.microsoft.com:5061;transport=tls;lr> I guess you mean above? I think microsoft inserts that header when you are using multi tenant method.

@robvandenbulk @DigitalDaz Thank you for replies. I appreciate it. I ended up putting a job on upwork and a good samaritan send me the BYE packet capture for $150 ;) But the two BYE signals looks the same, we cannot understand what changes in header affects the routing. For now we have...

@robvandenbulk I saw you have a working direct routing with ms teams and kamilio mentioned in this forum. I'm stuck with above issue and would like to get a sip trace when the far end(PSTN) side hangup the call, our BYE message doesn't receive a reply :( tried close to 8 different headers and...

We are developing SBC(using asterisk<-- don't shame :D we've got it working as our main dev guy is an asterisk worshipper) for MS teams direct routing multi tenant. We have come across an issue where when a call is placed from the msteams to outbound. The call can answer and speak. But if it...

Thanks gflow. I'll check more. I do not have packet captures yet.

What do you mean mate? I havent applied this setting yet. My issue is intermittent. Customer provides call samples. That's how i know. First few seconds silent and rtp start after few seconds. But not delayed. Missing audio like a buffer flush.

Any update on this mate. good find. Are you having issue after rtp-timer-name=none ? I have same issue where the first few seconds of the call is delayed or not heard.

Hey Adrian, Did you have luck with this. I used two SSL certs one from digicert "DigiCert Global Root CA" and one from ventraIP both failed with the same error Unknown CA, even with the latest firmware for t41p 36.83.0.130 Is there a certificate that worked for you? I've got 900...