[SR-Users] kamailio as SBC for Teams
Karsten Horsmann
khorsmann at gmail.com
Fri Apr 10 18:58:14 CEST 2020
Hi,
Like in Hennings howto described if the front facing Kamailio used the FQDN
names in contact and so one it works.
And the "must be an certified sbc" is an marketing foo and for support
cases they can say "go-to your sbc vendor" imho.
I had this setup up and running.
Kind regards
Karsten Horsmann
Sergiu Pojoga <pojogas at gmail.com> schrieb am Fr., 10. Apr. 2020, 18:27:
> Contact:
> <sip:KAMAILIO_IP;line=sr-DHZToOtmMdn7MODy9AnmD10TGLpUrL4noJCE4A03DdQE9LUaMXr*>
>
> Again, MS says it expects FQDN in Contact.
>
> If you are re-writing the Contact received from
> ENDPOINT_BEHIND_KAMAILIO_IP, then I suggest you don't, it's sufficient to
> have FQDN in RR. This isn't a "[certified] SBC", if it was like MS says -
> it shouldn't work at all with a proxy like Kamailio.
>
> On Fri, Apr 10, 2020 at 12:00 PM Sergiu Pojoga <pojogas at gmail.com> wrote:
>
>> You're likely referring to this:
>>
>> *Priority 1. Top-level Record-Route. If the top-level Record-Route
>> contains the FQDN name or IP, the FQDN name or IP is used to make the
>> outbound in-dialog connection.*
>>
>> Like with many Microsoft products, nobody knows precisely what they
>> expect. To make matters worse - they don't reply back suggesting what's
>> wrong, no tools on their side to troubleshoot.
>>
>> Regardless, why do you have 3 RRs of Kamailio? Fix the RRs, try again, or
>> don't, it's up to you.
>>
>> Good luck.
>>
>> --Sergiu
>>
>>
>> On Fri, Apr 10, 2020 at 11:42 AM Aidar Kamalov <aidar.kamalov at gmail.com>
>> wrote:
>>
>>> I thought they look only at first RR field?
>>>
>>> пт, 10 апр. 2020 г. в 17:03, Sergiu Pojoga <pojogas at gmail.com>:
>>>
>>>> You have too many RR of Kamailio, x1 FQDN, x3 IP. Why?
>>>>
>>>> IMO, you should have only 2 of Kamailio, if you're doing transport
>>>> conversion. Both FQDNs + ";r2=on". MS clearly says FQDN everywhere, no IP,
>>>> especially RR
>>>>
>>>> On Fri, Apr 10, 2020 at 7:06 AM Aidar Kamalov <aidar.kamalov at gmail.com>
>>>> wrote:
>>>>
>>>>> Thanks for the answer, I have disabled forse_rport() for Teams side,
>>>>> responses now going to address in Via header, but it is not resolved my
>>>>> issue, no ACK from Teams :(
>>>>>
>>>>> чт, 9 апр. 2020 г. в 18:22, Sergiu Pojoga <pojogas at gmail.com>:
>>>>>
>>>>>> 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
>>>>>>>
>>>>>> _______________________________________________
>>>>>> Kamailio (SER) - Users Mailing List
>>>>>> sr-users at lists.kamailio.org
>>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Aydar A. Kamalov
>>>>> _______________________________________________
>>>>> Kamailio (SER) - Users Mailing List
>>>>> sr-users at lists.kamailio.org
>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>>
>>>> _______________________________________________
>>>> Kamailio (SER) - Users Mailing List
>>>> sr-users at lists.kamailio.org
>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>>>
>>>
>>> --
>>> Aydar A. Kamalov
>>> _______________________________________________
>>> Kamailio (SER) - Users Mailing List
>>> sr-users at lists.kamailio.org
>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>
>> _______________________________________________
> 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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