[SR-Users] REFER from MS teams to Kamailio.

Sat May 16 01:12:28 CEST 2020

Comrad Yuriy,

I'm too lazy to start comparing... but I'm not special either, so most
likely I get the same REFER from MS as everyone else. You just have to
figure out how to handle it, as with any MS product, lol

P.S. Zoiper isn't by far the de-facto diamond standard in following SIP
compliance, lol

Cheers.

On Fri, May 15, 2020 at 4:55 PM Yuriy Nasida <ynasida at gmail.com> wrote:

> Thanks again Sergiu!
>
> Can you please look at REFER i sent and let me know if your REFER to
> asterisk looks same?
>
>
> MS's REFER is so weird honesty. Especially if I compare it with REFER from
> zoiper.
>
> пт, 15 мая 2020 г., 21:25 Sergiu Pojoga <pojogas at gmail.com>:
>
>> I personally chose the option of not removing the REFER from supported
>> methods. Had to handle in a custom way the attended transfer context in
>> Asterisk (my choice of B2B). I don't know how it is in FS.
>>
>> Good luck.
>>
>> On Fri, May 15, 2020 at 2:32 AM Yuriy Nasida <ynasida at gmail.com> wrote:
>>
>>> Yes, Kamailio just send MS refer to FS.
>>> In my opinion it is MS related, because their REFER is weird. This list
>>> have members who did MS integration with Kamailio. That is why I would like
>>> to ask if you get attended (consult), transfer working with MS (with refer
>>> or without refer - it doesn't matter). Do you handle refer at kamailio
>>> somehow?
>>>
>>> чт, 14 мая 2020 г., 23:02 David Villasmil <
>>> david.villasmil.work at gmail.com>:
>>>
>>>> This looks Fs-related, not kamailio.
>>>>
>>>> On Thu, 14 May 2020 at 20:25, Yuriy Nasida <ynasida at gmail.com> wrote:
>>>>
>>>>> I do not want MS to initiate a separate call leg. I want to get
>>>>> attended (consult) transfer. I call from A to B. Next call from A to C.
>>>>> Next, I want transfer B to C.
>>>>>  B and C is pstn numbers (i.e. not MS side).
>>>>>
>>>>> I expect 2 variants:
>>>>>
>>>>> 1) Without REFER support at kamailio. I expect MS just will do
>>>>> transfer B-->C  at MS side. But MS send one more INVITE to C Instead of
>>>>> this.  i.e. C side already has the call. I do transfer and.. C side gets
>>>>> one more call instead of transfer.
>>>>>
>>>>> 2) Kamilio support REFER and send it to FS. FS should transfer such
>>>>> call inside itself (like it does for REFERs from zoiper or other usual
>>>>> softphones).
>>>>> But... MS sends weird REFER and FS can not handle it it the same way
>>>>> like FS does for zoiper.
>>>>>
>>>>> Please advice.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Thu, 14 May 2020 at 18:39, Sergiu Pojoga <pojogas at gmail.com> wrote:
>>>>>
>>>>>> Remove the REFER from Supported header if you want MS to initiate a
>>>>>> separate call leg, it's described in the direct dialing documentation.
>>>>>>
>>>>>> Cheers.
>>>>>>
>>>>>> On Thu, May 14, 2020, 11:14 AM Yuriy Nasida, <ynasida at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Well, I saw similar questions in the list already but looks like
>>>>>>> nobody has answer.
>>>>>>>
>>>>>>> Please look at REFER below.
>>>>>>>
>>>>>>> Kamilio get REFER from MS and sends it to FS node. Next, FS node try
>>>>>>> to make 3th call for some reason.I expect that FS will not do 3th call and
>>>>>>> just will connect Alice and Bob itself.
>>>>>>>
>>>>>>>
>>>>>>> 2020/05/14 12:32:00.637027 KAM_IP:5060 -> FS_IP:5060
>>>>>>> REFER sip:Alice_number at FS_IP:5060;transport=udp SIP/2.0
>>>>>>> FROM: Customer1<sip:MS_TRUNK_NUMBER at sip.pstnhub.microsoft.com:5061
>>>>>>> ;user=phone>;tag=a860c50a3fb54d08b4e5740fa2dfb3d6
>>>>>>> TO: <sip:Alice_number at FQDN_OF_TRUNK
>>>>>>> :5061>;user=phone;tag=e8ct9S6ty13va
>>>>>>> CSEQ: 4 REFER
>>>>>>> CALL-ID: 2c71b2a6669b5343a231e1244b19c945
>>>>>>> MAX-FORWARDS: 50
>>>>>>> Via: SIP/2.0/UDP
>>>>>>> FQDN_OF_TRUNK:5060;branch=z9hG4bK10ae.2c42897feca117121a23bf0c8d54cd19.0;i=c
>>>>>>> VIA: SIP/2.0/TLS 52.114.75.24:5061;branch=z9hG4bK7e3e8998
>>>>>>> CONTACT: <sip:api-du-a-euwe.pstnhub.microsoft.com:443
>>>>>>> ;x-i=6b68e7aa-f5e2-44ec-9edf-0bacbabfce07;x-c=2c71b2a6669b5343a231e1244b19c945/d/8/b68f86794a8e44d19543f8edbee6b2fc
>>>>>>> CONTENT-LENGTH: 0
>>>>>>> REFER-TO: <sip:Bob_number at sip.pstnhub.microsoft.com:5061
>>>>>>> ;user=phone;transport=tls>
>>>>>>> REFERRED-BY: <sip:sip.pstnhub.microsoft.com:5061
>>>>>>> ;x-m=8:orgid:21bc47d3-c050-4292-8234-46f7005b97aa;x-t=fb788ef8-3c4c-455a-8d62-f3c20832c0d3;x-ti=6b68e7aa-f5e2-44ec-9edf-
>>>>>>>
>>>>>>> acbabfce07;x-tt=aHR0cHM6Ly9hcGktZHUtYS1ldXdlLnBzdG5odWIubWljcm9zb2Z0LmNvbS92MS9uZ2MvY2FsbG5vdGlmaWNhdGlvbj9kY2k9YzIxMjE3MzEyNTQ2NDk1ZjlhYTcwODliYTkwNGIxZGQ%3D>
>>>>>>> USER-AGENT: Microsoft.PSTNHub.SIPProxy v.2020.5.6.2 i.EUWE.4
>>>>>>> ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
>>>>>>> P-ASSERTED-IDENTITY: <tel:MS_TRUNK_NUMBER>,<
>>>>>>> sip:customer1 at m365x587912.onmicrosoft.com>
>>>>>>> PRIVACY: id
>>>>>>> X-AUTH-IP: 52.114.75.24
>>>>>>> X-AUTH-PORT: 3136
>>>>>>>
>>>>>>>
>>>>>>> Any advice?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> 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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>>>>>>
>>>>> _______________________________________________
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>>>>>
>>>> --
>>>> Regards,
>>>>
>>>> David Villasmil
>>>> email: david.villasmil.work at gmail.com
>>>> phone: +34669448337
>>>> _______________________________________________
>>>> Kamailio (SER) - Users Mailing List
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>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>
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