[OpenSIPS-Users] OpenSIPS as Teams SBC

[James Hogbin]

OK I fixed the RTPProxy to request a port in the correct range of teams media & I get a response but it’s now I get a rejection.
It’s probably a basic error but I’m pulling my hair out on this one.

James Hogbin
Director 
 
IP Sentinel 
t. +44 (0)20 3011 4150
m. +44 7786910895
w. https://www.ip-sentinel.com

My Invite is now:
INVITE sip:+448435577721 at sip.pstnhub.microsoft.com:5061;transport=tls SIP/2.0
Record-Route: <sip:sbc.ip-sentinel.com:5091;transport=tls;ftag=QaaXp916U09ea;lr>
Via: SIP/2.0/TLS 137.117.136.143:5091;branch=z9hG4bK65fa.6a01b6b3.0;i=da9130a5
Via: SIP/2.0/TLS 13.80.245.144:5081;received=13.80.245.144;rport=59751;branch=z9hG4bK058c0vQ8jmNgQ
Max-Forwards: 68
From: "James Hogbin" <sip:+442030114146 at 13.80.245.144>;tag=QaaXp916U09ea
To: <sip:08435577721 at sbc.ip-sentinel.com:5091>
Call-ID: 17a3ba67-0ed7-1239-bdba-000d3aada04e
CSeq: 20084344 INVITE
Contact: <sip:gw+c6ff36e8-d3de-4fe0-9f1b-9da2888c43a9 at 13.80.245.144:5081;transport=tls;transport=tls;gw=c6ff36e8-d3de-4fe0-9f1b-9da2888c43a9>
User-Agent: FreeSWITCH
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY
Supported: timer, path, replaces
Allow-Events: talk, hold, conference, refer
Content-Type: application/sdp
Content-Disposition: session
Content-Length: 1337
X-FS-Support: update_display,send_info
Remote-Party-ID: "James Hogbin" <sip:+442030114146 at 13.80.245.144>;party=calling;screen=yes;privacy=off

v=0
o=FreeSWITCH 1589254426 1589254427 IN IP4 13.80.245.144
s=FreeSWITCH
c=IN IP4 137.117.136.143
t=0 0
m=audio 50398 RTP/SAVP 9 0 8 101 13
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:13 CN/8000
a=crypto:1 AEAD_AES_256_GCM_8 inline:Qpokk/LxXKr5UWx5lMc5S+b5fWaNbapzIBpe6Xw/v2EFbrvUVRA5Mr0375E=
a=crypto:2 AEAD_AES_128_GCM_8 inline:M3IRqfY/RaDNfx7KkVLOnPzbde7oxNSqKQCuEg==
a=crypto:3 AES_256_CM_HMAC_SHA1_80 inline:gI/heQV4rgH1INfxNSz8u73SuNeaylNvmCU+a1yrBgvk7q6Rd21OBlBYSGuHbA==
a=crypto:4 AES_192_CM_HMAC_SHA1_80 inline:AhRaELwZ8wNuhsmoDQ/JnQ70fOlxc0YFGj+bmV4YPjcAq9f/hqU=
a=crypto:5 AES_CM_128_HMAC_SHA1_80 inline:SLXecdXmkahipFYqDsbR8GI7ENXkuAoP9QmyStqP
a=crypto:6 AES_256_CM_HMAC_SHA1_32 inline:OgVBI3uYDKxEj3AhjznqxYS52k9vJZ0U5K1iRxMF5eqqBfvUN7gUaLzP/FG6QQ==
a=crypto:7 AES_192_CM_HMAC_SHA1_32 inline:TpNpiqzu1HdtovH2jo7kDOyLIp4y1AlGGlJ9Jpc66UElQWI41zI=
a=crypto:8 AES_CM_128_HMAC_SHA1_32 inline:kCZSBfT5KOZAgyCg0HmGegD1P7WhWmX8CppQPn36
a=crypto:9 AES_CM_128_NULL_AUTH inline:tAHA0wDUPPyH7jlX06dBEFQKxmBoeUbKABUmVVJD
a=ptime:20
m=audio 53104 RTP/AVP 9 0 8 101 13
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:13 CN/8000
a=ptime:20
a=nortpproxy:yes

I get a 100 Trying

SIP/2.0 100 Trying
FROM: "James Hogbin"<sip:+442030114146 at 13.80.245.144>;tag=QaaXp916U09ea
TO: <sip:08435577721 at sbc.ip-sentinel.com:5091>
CSEQ: 20084344 INVITE
CALL-ID: 17a3ba67-0ed7-1239-bdba-000d3aada04e
VIA: SIP/2.0/TLS 137.117.136.143:5091;branch=z9hG4bK65fa.6a01b6b3.0;i=da9130a5,SIP/2.0/TLS 13.80.245.144:5081;received=13.80.245.144;branch=z9hG4bK058c0vQ8jmNgQ;rport=59751
CONTENT-LENGTH: 0
ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
SERVER: Microsoft.PSTNHub.SIPProxy v.2020.5.6.2 i.EUWE.0

Which I ACK
ACK sip:+448435577721 at sip.pstnhub.microsoft.com:5061;transport=tls SIP/2.0
Via: SIP/2.0/TLS 137.117.136.143:5091;branch=z9hG4bK65fa.6a01b6b3.0
FROM: "James Hogbin"<sip:+442030114146 at 13.80.245.144>;tag=QaaXp916U09ea
Call-ID: 17a3ba67-0ed7-1239-bdba-000d3aada04e
TO: <sip:08435577721 at sbc.ip-sentinel.com:5091>
CSeq: 20084344 ACK
Max-Forwards: 70
User-Agent: OpenSIPS (3.0.2 (x86_64/linux))
Content-Length: 0

But then I get a Rejection
SIP/2.0 503 Service Unavailable
FROM: "James Hogbin"<sip:+442030114146 at 13.80.245.144>;tag=QaaXp916U09ea
TO: <sip:08435577721 at sbc.ip-sentinel.com:5091>
CSEQ: 20084344 INVITE
CALL-ID: 17a3ba67-0ed7-1239-bdba-000d3aada04e
VIA: SIP/2.0/TLS 137.117.136.143:5091;branch=z9hG4bK65fa.6a01b6b3.0;i=da9130a5,SIP/2.0/TLS 13.80.245.144:5081;received=13.80.245.144;branch=z9hG4bK058c0vQ8jmNgQ;rport=59751
REASON: Q.850;cause=42;text="cc897e64-525a-4bc8-a819-a6f6ae586ea0;Service temporarily unavailable"
CONTENT-LENGTH: 0
ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
SERVER: Microsoft.PSTNHub.SIPProxy v.2020.5.6.2 i.EUWE.0

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