HI Flavio, Hope you are well! MS Have actually well documented this ( odd ) behaviour. Essentially the TLDR is turn off REFER support on all your invites and replies to MS if you don't want go down want to have to do a bit of work to support their refer format. If you do want to get REFER working the relevant bits are from MS are below ( they refer to the sip proxy - thats an MS sip proxy - you are the SBC ) If the call is transferred from one Teams user to another via the SBC, the SBC is expected to issue a new invite (start a new dialog) for the transfer target (the Teams user) using the information received in the Refer message. To populate the To/Transferor fields for the transaction of the request internally, the SIP proxy needs to convey this information inside the REFER-TO/REFERRED-BY headers. The SIP proxy will form the REFER-TO as a SIP URI comprised of a SIP proxy FQDN in the hostname and either one of the following: An E.164 phone number in the username part of the URI in case the transfer target is a phone number, or x-m and x-t parameters encoding the full transfer target MRI and tenant ID respectively The REFERRED-BY header is a SIP URI with transferor MRI encoded in it as well as transferor tenant ID and other transfer context parameters as shown in the following table: TABLE 3 ParameterValueDescription x-mMRIFull MRI of transferor/transfer target as populated by CC x-tTenant IDx-t Tenant ID Optional Tenant Id as populated by CC x-tiTransferor Correlation IdCorrelation Id of the call to the transferor x-ttTransfer target call URIEncoded call replacement URI Its all documented at: https://docs.microsoft.com/en-us/microsoftteams/direct-routing-protocols-sip Brian. On Mon, Jun 15, 2020 at 10:51 PM Flavio Goncalves <flavio@voffice.com.br> wrote:
Hi,
I've managed to connect teams using FS, now I´m trying to implement call hold and call transfer. Teams use an unusual way for hold, it transfers the call. In the refer I can see the refer-to pointing to an url without a request uri user
REFER-TO: <sip:sip.pstnhub.microsoft.com:5061;transport=tls;x-m=8:orgid:e83c0390-43cb-4c40-8d09-8a972709235b;x-t=9c36cf22-e6e8-4792-b823-873069b82489>
How can I bridge a call to an URI without a request uri user?
I tried sofia/gateway/ms1/ (without passing a user). I tried <action application="export" data="nolocal:sip_invite_req_uri=$1;$2"/>
where $1 is the domain and $2 are the invite parameters
but no success.
Did anyone have success with TEAMS and call hold, call transfer?
Thanks
Flavio E Goncalves _________________________________________________________________________
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