ms-call-source option on Lync Server 2010

Question

Hello,

In the OCS we got the following feature:

2.2.3 ms-call-source

The ABNF, as defined in [RFC5234], for the ms-call-source SIP header is as follows:
Ms-Call-Source = "Ms-Call-Source" HCOLON ("ms-rtc" / "non-ms-rtc")
The supported tokens for the ms-call-source header are "ms-rtc" and "non-ms-rtc". The first token designates that the call originated from a protocol server network, and the latter means that the call originated from a non–protocol server network, such as a PSTN or IP-PBX.
The syntax of this header is illustrated as follows:
Ms-Call-Source: ms-rtc

This information it's on page 14 of MS-OCPSTN documment - http://msdn.microsoft.com/en-us/library/cc431499(v=office.12).aspx

I would like to know feature is applied to Lync Server 2010 Mediation Server too. I've see this flag "Ms-Call-Source" already in some internal traces of Lync Server Logging but this is not send to external SIP devices (ie. PSTN Gateways). 

Could we enable this with an option config? This feature was used to handle dual forking scenarios with the PSTN Gateway.

Or this function it's only available on OCS 2007 R2 and it was removed from Lync Server 2010 Mediation Server.

Hope my question was clear.

Best Regards,

Claudio Andrade

Answer 1

Hi Claudio,

Thank you for your question.  An engineer from the Protocols Team will contact you soon.

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Bryan S. Burgin Senior Escalation Engineer Microsoft Protocol Open Specifications Team

Answer 2

Thank you for the feedback.

I will wait for news.

Regards,

Answer 3

After additional consideration: while you cite protocols, this does not appear to be a protocol question, so this would not be the correct forum for this question. I suggest posting this question on a Technet Lync Server forum.  The list of Lync forums are at http://social.technet.microsoft.com/Forums/en-us/category/ocs.

The purpose of this forum is to support the Open Specifications documentation. You can read about the Microsoft Open Specifications program here: http://www.microsoft.com/openspecifications/en/us/default.aspx.  This does not include support for RFC specifications such as RFC5234

The library of Open Specification documents is located here, http://msdn.microsoft.com/en-us/library/dd208104(PROT.10).aspx.

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Bryan S. Burgin Senior Escalation Engineer Microsoft Protocol Open Specifications Team

Answer 4

Hi Bryan,

Initially I posted my question on the forum you mentioned - http://social.technet.microsoft.com/Forums/en-US/ocsinterop/thread/2c955cb6-f36f-415d-a4e2-13b415b301a3

However the answer given to me was to put the question on this forum.

Seams there is no "forum" for this kind of question. However I understand what you told and thank you nevertheless.