HI

I installed two servers Lync Server 2010 for two clients (different domain). This last time, the customer signed a partnership contract. they told me to configure two servers for members of both clients can communicate with Lync. 

Is it possible to interconnect two lync servers that have a different domain?

if so, have you any idea how can i do?

If you're stating that you have two different Lync environments, in two separate domains / forests, then you have a couple options that immediately come to mind.

Assuming you are retaining the separate AD environments. You can create a federated relationship between the two. This will naturally require the nessecary roles to be in place for external access (Edge and Reverse Proxy) in each Lync environment.

Alternately you will need to investigate Lync operation in a multi-forest environment with an identity management solution as per http://technet.microsoft.com/en-us/library/gg398173.aspx

Naturally if there's a view to merge the two organisations into a single domain the this negates the above.

Please say if I've interpreted this incorrectly.

Kind regards
Ben

thank you for reply

he does not want to merge the two AD because they are two separate companies, he just want to communicate with lync: (

have you an idea how I can configure lync server for separate multi-forest?

If you're stating that you have two different Lync environments, in two separate domains / forests, then you have a couple options that immediately come to mind.

Assuming you are retaining the separate AD environments. You can create a federated relationship between the two. This will naturally require the nessecary roles to be in place for external access (Edge and Reverse Proxy) in each Lync environment.

Alternately you will need to investigate Lync operation in a multi-forest environment with an identity management solution as per http://technet.microsoft.com/en-us/library/gg398173.aspx

Naturally if there's a view to merge the two organisations into a single domain the this negates the above.

Please say if I've interpreted this incorrectly.

Kind regards
Ben

• Marked as answer by Lisa.zhengMicrosoft contingent staff, Moderator 4 hours 31 minutes ago

If you're stating that you have two different Lync environments, in two separate domains / forests, then you have a couple options that immediately come to mind.

Assuming you are retaining the separate AD environments. You can create a federated relationship between the two. This will naturally require the nessecary roles to be in place for external access (Edge and Reverse Proxy) in each Lync environment.

Alternately you will need to investigate Lync operation in a multi-forest environment with an identity management solution as per http://technet.microsoft.com/en-us/library/gg398173.aspx

Naturally if there's a view to merge the two organisations into a single domain the this negates the above.

Please say if I've interpreted this incorrectly.

Kind regards
Ben

• Marked as answer by Lisa.zhengMicrosoft contingent staff, Moderator Sunday, April 06, 2014 6:25 AM

You can connect between 2 users in separate forest by using Lync federation.

To configure Lync federation, you can refer below link

http://technet.microsoft.com/en-us/library/jj204800.aspx