[OpenSIPS-Users] ms teams ACK

[Santi Anton]

Hello Ben,

I agree. These are the INVITE and 200 OK. I only could see that to and from
tag an Call-ID are the same. I think that in the article there is nothing
about modifying ACK headers to make it work.


INVITE sip:5009 at sip.pstnhub.microsoft.com SIP/2.0
Record-Route:
<sip:sbc.xxxxxxxxxx.com:5067;transport=tls;lr;did=12a.a46808d1;r2=on>
Record-Route: <sip:195.xx.xx.xx:5060;lr;did=12a.a46808d1;r2=on>
Via: SIP/2.0/TLS 195.xx.xx.xx:5067;branch=z9hG4bK2f83.ee24a46.0
Via: SIP/2.0/UDP
80.xx.xx.xx.xx:5060;received=80.xx.xx.xx.xx;branch=z9hG4bK4df6ca5c;rport=5060
Max-Forwards: 69
From: <sip:935441221 at 80.xx.xx.xx.xx>;tag=as7659f57d
To: <sip:5009 at sbc.xxxxxxxxxx.com:5068>
Contact: <sip:935441221 at 80.xx.xx.xx.xx:5060>
Call-ID: 433371746cb44b7d76fdc42013bf92b8 at 80.xx.xx.xx.xx:5060
CSeq: 102 INVITE
User-Agent: FPBX-12.0.76.6(11.20.0)
Date: Mon, 27 Apr 2020 16:25:24 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
PUBLISH, MESSAGE
Supported: replaces, timer
Content-Type: application/sdp
Content-Length: 1470


SIP/2.0 200 OK
FROM: <sip:935441221 at 80.xx.xx.xx.xx>;tag=as7659f57d
TO: <sip:5009 at sbc.xxxxxxxxxx.com:5068>;tag=50fe42a7fdb64fe583c1089a0b47f44a
CSEQ: 102 INVITE
CALL-ID: 433371746cb44b7d76fdc42013bf92b8 at 80.xx.xx.xx.xx:5060
VIA: SIP/2.0/TLS 195.xx.xx.xx:5067;branch=z9hG4bK2f83.ee24a46.0,SIP/2.0/UDP
80.xx.xx.xx.xx:5060;received=80.xx.xx.xx.xx;branch=z9hG4bK4df6ca5c;rport=5060
RECORD-ROUTE:
<sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr>,<sip:sbc.xxxxxxxxxx.com:5067;transport=tls;lr;did=12a.a46808d1;r2=on>,<sip:195.xx.xx.xx:5060;lr;did=12a.a46808d1;r2=on>
CONTACT:
<sip:api-du-b-euwe.pstnhub.microsoft.com:443;x-i=0c135a71-ddec-454c-a506-91079cb038d7;x-c=385a4453fc885c0bb6276a40d7796d3a/s/1/e1c45d052842415e9c0b3b0b04e32791>
CONTENT-LENGTH: 827
SUPPORTED: timer
CONTENT-TYPE: application/sdp
ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
SESSION-EXPIRES: 3600;refresher=uas
SERVER: Microsoft.PSTNHub.SIPProxy v.2020.4.20.2 i.EUWE.6

Best Regards,



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