[SR-Users] kamailio as SBC for Teams

Thu Apr 9 17:21:32 CEST 2020

Hi Aydar,

Request from MS proxy has  VIA: SIP/2.0/TLS 52.114.7.24:5061, that's where
your reply should go. You're sending to 52.114.7.24:1024 instead?

Also, looks like you're missing "r2=on" on the other RR, only one has it.

Cheers,

On Thu, Apr 9, 2020 at 11:09 AM Aidar Kamalov <aidar.kamalov at gmail.com>
wrote:

> Hello,
>
> I read https://skalatan.de/en/blog/kamailio-sbc-teams and trying to use
> kamailio for teams.
> But I faced that MS not responding ACK to my 200OK. Somethin is wrong, but
> I don't know what. I call from teams to kamailio.
> Can you help me please
>
> This is initial INVITE from Teams:
> 2020/04/09 22:55:17.346092 52.114.7.24:1024 -> KAMAILIO_IP:5061
> INVITE sip:+xxxxxxxxx at MY_KAMAILIO_FQDN:5061;user=phone;transport=tls
> SIP/2.0
> FROM: Aidar Kamalov<sip:+xxxxxxxxx at sip.pstnhub.microsoft.com:5061
> ;user=phone>;tag=de28a5b5333b451a97312097f91f5564
> TO: <sip:xxxxxxxx at MY_KAMAILIO_FQDN:5061;user=phone>
> CSEQ: 1 INVITE
> CALL-ID: 3d5ad3cdd01457be94d127fa20478cf1
> MAX-FORWARDS: 70
> VIA: SIP/2.0/TLS 52.114.7.24:5061;branch=z9hG4bKdb903e2c
> RECORD-ROUTE: <sip:sip-du-a-as.pstnhub.microsoft.com:5061
> ;transport=tls;lr>
> CONTACT: <sip:api-du-a-euno.pstnhub.microsoft.com:443
> ;x-i=903eeaac-b19e-43a0-8e75-bb222049922a;x-c=3d5ad3cdd01457be94d127fa20478cf1/d/8/d3d2c2e3f3c14f88bb2fe843b4bc70e4>
> CONTENT-LENGTH: 2426
> USER-AGENT: Microsoft.PSTNHub.SIPProxy v.2020.4.4.3 i.ASEA.5
> CONTENT-TYPE: application/sdp
> ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
>
> v=0
> o=- 0 0 IN IP4 52.114.252.146
> s=session
> c=IN IP4 52.114.252.146
> b=CT:50000
> t=0 0
> m=audio 52939 RTP/SAVP 104 9 111 18 0 8 103 97 13 118 119 101
> a=rtcp:52925
> a=ice-ufrag:rKBm
> a=ice-pwd:BkjUnkfIvYV5pjteSteevL1O
> a=rtcp-mux
> a=candidate:4 1 UDP 184547839 52.114.252.146 52939 typ relay raddr
> 31.13.144.55 rport 57780
> a=candidate:4 2 UDP 184547326 52.114.252.146 52925 typ relay raddr
> 31.13.144.55 rport 57781
> a=candidate:1 1 tcp-act 2121006590 100.78.247.179 1024 typ host
> a=candidate:1 2 tcp-act 2121006590 100.78.247.179 1024 typ host
> a=candidate:2 1 UDP 2130705919 100.78.247.179 39182 typ host
> a=candidate:2 2 UDP 2130705406 100.78.247.179 39183 typ host
> a=candidate:3 1 UDP 1694497791 31.13.144.55 57780 typ srflx raddr
> 100.78.247.179 rport 39182
> a=candidate:3 2 UDP 1694497278 31.13.144.55 57781 typ srflx raddr
> 100.78.247.179 rport 39183
> a=candidate:5 1 tcp-act 1684796926 31.13.144.55 9761 typ srflx raddr
> 100.78.247.179 rport 41775
> a=candidate:5 2 tcp-act 1684796926 31.13.144.55 9761 typ srflx raddr
> 100.78.247.179 rport 41775
> a=candidate:6 1 tcp-pass 174453758 52.114.252.130 59925 typ relay raddr
> 31.13.144.55 rport 9761
> a=candidate:6 2 tcp-pass 174453758 52.114.252.130 59925 typ relay raddr
> 31.13.144.55 rport 9761
> a=candidate:7 1 tcp-act 174846462 52.114.252.130 59925 typ relay raddr
> 31.13.144.55 rport 9761
> a=candidate:7 2 tcp-act 174846462 52.114.252.130 59925 typ relay raddr
> 31.13.144.55 rport 9761
> a=x-candidate-info:4 network-type=WWAN
> a=x-candidate-info:1 network-type=WWAN
> a=x-candidate-info:2 network-type=WWAN
> a=x-candidate-info:3 network-type=WWAN
> a=x-candidate-info:5 network-type=WWAN
> a=x-candidate-info:6 network-type=WWAN
> a=x-candidate-info:7 network-type=WWAN
> a=crypto:1 AES_CM_128_HMAC_SHA1_32
> inline:DY3r3DWRojJm94CJQ83OAavmlRCwPf5ciRxHCT40|2^31
> a=crypto:2 AES_CM_128_HMAC_SHA1_80
> inline:DY3r3DWRojJm94CJQ83OAavmlRCwPf5ciRxHCT40|2^31
> a=crypto:3 AES_CM_128_HMAC_SHA1_80
> inline:DY3r3DWRojJm94CJQ83OAavmlRCwPf5ciRxHCT40|2^31|1:1
> a=rtpmap:104 SILK/16000
> a=fmtp:104 useinbandfec=1; usedtx=0
> a=rtpmap:9 G722/8000
> a=rtpmap:111 SIREN/16000
> a=fmtp:111 bitrate=16000
> a=rtpmap:18 G729/8000
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:103 SILK/8000
> a=fmtp:103 useinbandfec=1; usedtx=0
> a=rtpmap:97 RED/8000
> a=rtpmap:13 CN/8000
> a=rtpmap:118 CN/16000
> a=rtpmap:119 CN/24000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=ptime:20
> a=maxptime:200
>
>
>
> and my 200OK to MS is:
>
> 2020/04/09 22:55:19.976427 KAMAILIO_IP:5061 -> 52.114.7.24:1024
> SIP/2.0 200 OK
> Record-Route:
> <sip:KAMAILIO_FQDN_DOMAIN:5061;transport=tls;ftag=de28a5b5333b451a97312097f91f5564;lr=on>
> Record-Route:
> <sip:KAMAILIO_IP:5060;ftag=de28a5b5333b451a97312097f91f5564;lr=on>
> Via: SIP/2.0/TLS 52.114.7.24:5061;rport=1024;branch=z9hG4bKdb903e2c
> Record-Route:
> <sip:ENDPOINT_BEHIND_KAMAILIO_IP;line=sr-QyfKA15Kw1rKw1hKEoPljM0oE1VLX10RQ1VLX10gkY37WJufE1BBjJhVE6E6r14VEJ5Nj6ElE1UNjyrNEJrVjnr.AyudmMV1rg52rJrlAyNBkMVNmSE*>
> Record-Route:
> <sip:ENDPOINT_BEHIND_KAMAILIO_IP;r2=on;lr=on;ftag=de28a5b5333b451a97312097f91f5564;did=cba.af1;nat=yes>
> Record-Route:
> <sip:KAMAILIO_IP;r2=on;lr=on;ftag=de28a5b5333b451a97312097f91f5564;did=cba.42a1;nat=yes>
> Record-Route:
> <sip:KAMAILIO_IP:5061;transport=tls;r2=on;lr=on;ftag=de28a5b5333b451a97312097f91f5564;did=cba.42a1;nat=yes>
> Record-Route: <sip:sip-du-a-as.pstnhub.microsoft.com:5061
> ;transport=tls;lr>
> To: <sip:+xxxxxxxxxx at KAMAILIO_FQDN_DOMAIN
> :5061;user=phone>;tag=3795432917-393759697
> From: <sip:+xxxxxxxxxx at sip.pstnhub.microsoft.com:5061
> ;user=phone>;tag=de28a5b5333b451a97312097f91f5564
> Call-ID: 3d5ad3cdd01457be94d127fa20478cf1
> CSeq: 1 INVITE
> Allow:
> PUBLISH,MESSAGE,UPDATE,PRACK,SUBSCRIBE,REFER,INFO,NOTIFY,REGISTER,OPTIONS,BYE,INVITE,ACK,CANCEL
> Content-Type: application/sdp
> Accept: application/sdp
> Content-Length: 282
> User-Agent: MY_DOMAIN
> Contact:
> <sip:KAMAILIO_IP;line=sr-DHZToOtmMdn7MODy9AnmD10TGLpUrL4noJCE4A03DdQE9LUaMXr*>
>
> v=0
> o=ETPI-MSX1 0 0 IN IP4 KAMAILIO_IP
> s=sip call
> c=IN IP4 KAMAILIO_IP
> t=0 0
> m=audio 12176 RTP/SAVP 8
> b=AS:64
> a=maxptime:20
> a=rtpmap:8 PCMA/8000
> a=sendrecv
> a=rtcp:12177
> a=crypto:1 AES_CM_128_HMAC_SHA1_32
> inline:03ZmcR+CxxB7k7C8QvWBgseYq7cH7py7VxqfLM8j
> a=ptime:20
>
>
> --
> Aydar A. Kamalov
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
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