[OpenSIPS-Users] REFER from MS teams to Kamailio/Opensips

[Bogdan-Andrei Iancu]

Hi Yuriy,

As you are using Kamailio and FreeSWITCH, it is more appropriate to post 
the question to their mailing lists.

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com

On 5/14/20 6:09 PM, Yuriy Nasida wrote:
> I use kamilio but I think it works in the same way for Opensips.
>
> Well, I saw similar questions in the list already but looks like 
> nobody has answer.
>
> Please look at REFER below.
>
> Kamilio gets 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 
> <mailto:sip%3Acustomer1 at m365x587912.onmicrosoft.com>>
> PRIVACY: id
> X-AUTH-IP: 52.114.75.24
> X-AUTH-PORT: 3136
>
>
> Any advice?
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users

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