Can we integrate Lync 2010 to ExUM 2010 voice mail if there is a session border controller connected in between them using TLS SIP Trunks?

Yes .Can be done good Blog published by Jeff.

http://blog.schertz.name/2010/11/lync-and-exchange-um-integration/

 

Best Regards

Is this for integration with an cloud or non-on premise Exchange environment?  If so, it is not necessary to use a SBC as the Lync Edge services provide secure SIP already.  http://support.microsoft.com/kb/2399955

If this is not the scenario, can you provide more information?

 

I take back my "Propose as Answer", on the other post, I accidentally clicked on it...sorry...

The question is a tricky one, I don't think I have seen that done before.  I don't know the answer.

 

Hi, SBC allow different parts of the network to communicate through the use of a variety of techniques such as below, is one of ways connection mediation server to telephone network provider; Integration Lync 2010 with ExUM 2010 rather than make them communication together, furthermore, they are need to be making MTLS connection, query contact object from AD and apply dialplan to let inbound dialing.

• NAT traversal
• SIP normalization via SIP message and header manipulation
• IPv4 to IPv6 interworking
• VPN connectivity
• Protocol translations between SIP, SIP-I, H.323

So if you need to integrate premise Lync 2010 with hosted ExUm 2010, I would suggest you make them integrated as Mark said.

More information about how SBC worked in Lync 2010, please check this document.

Multiple Gateway Support: http://technet.microsoft.com/en-us/library/gg398971.aspx

There is nothing in Jeff's article suggesting that an SBC can be used between on prem Lync EV and Exchange UM. Please answer questions with care, as you may mislead someone into believing something can be done, when the it may actually not be.

I've never heard of placing an SBC between on prem Lync and Exchange UM. I'm not saying it can't be done. I do question the supportability from and MS perspective, as well as the need/justification for it.

Regards,

L.