I don't believe we have gotten any sort of RCA from them yet but we noted that the User-Agent, while calls were failing, had "v.2023.08.28.1" in it and after the problem cleared the User-Agent had "v.2023.06.29.3.i" in it, so it smells like a rollback to me.
On Wed, Aug 30, 2023 at 1:11 PM Pete Eisengrein <[email protected]> wrote: > It is Direct Routing, but we weren't getting the 400 Bad Request, and for > us the BYE was originating from the PSTN towards Microsoft due to no audio. > This magically began to clear around noon eastern. > > On Wed, Aug 30, 2023 at 12:37 PM Hunt, Fred A - DOA < > [email protected]> wrote: > >> Are you using Teams Direct Routing? This morning it does appear that >> Teams is not cleanly terminating calls. Here’s an example response from >> Teams to a SIP BYE message sent >> >> >> >> 148249222: Aug 30 15:09:39.986: >> //12929228/0B60EED0B3ED/CUBE_VT/SIP/Msg/ccsipDisplayMsg: >> >> Received: SIP TLS message from 52.114.132.46:5061 to [REDACTED] >> >> SIP/2.0 400 Bad Request >> >> FROM: "[REDACTED]"sip:+[REDACTED]@[REDACTED];tag=59E32C35-1282 >> >> TO: sip:+[REDACTED]@sip.pstnhub.microsoft.com >> ;tag=42b61721ea1d4686bf22e4b2f03384d0 >> >> CSEQ: 102 BYE >> >> CALL-ID: B629C8A-467E11EE-B3F38F31-9397CD96@[REDACTED] >> <[email protected]> >> >> VIA: SIP/2.0/TLS [REDACTED];branch=z9hG4bK3B67395A8 >> >> REASON: >> Q.850;cause=95;text="9e76dc15-53f0-4eb9-82b0-215b7e029e87;Expected a >> Protocol of Reason header as a token, got >> '\5cx17\5cx03\5cx03\5cx03n\5cx8BC^YB C;8t\5cx96C^]BYE >> sip:api-du-a-usea.pstnhub.microsoft.com:443;x-i=9e76dc15-53f0-4eb9-82b0-215b7e029e87;x-c=4c4164749a1c57e5958505fe4de5d0cb/s/1/dd4c >> " >> >> CONTENT-LENGTH: 0 >> >> ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY >> >> SERVER: Microsoft.PSTNHub.SIPProxy v.2023.8.28.1 i.USEA.10 >> >> >> >> Nothing has changed with what we are sending to MS in the SIP Reason >> header and I also see plenty of calls today that do terminate cleanly. >> >> >> >> *From:* Outages <[email protected]> *On Behalf Of *Pete >> Eisengrein via Outages >> *Sent:* Wednesday, August 30, 2023 10:32 AM >> *To:* [email protected] >> *Subject:* [outages] Microsoft Teams outage? >> >> >> >> *CAUTION: This email originated from outside the organization. * >> *Do not click links or open attachments unless you recognize the sender >> and know the content is safe.* >> >> >> >> We are experiencing an issue with Microsoft this morning, where they >> initially connect but when we send a re-INVITE, Microsoft responds with a >> 100 Trying but then never updates the session and the call is left with >> dead air and eventually the caller hangs up. >> >> >> >> Waiting on Microsoft support..... >> >> >> >> Thanks >> >
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