Unity Interoperability Gateway - Interop Domain FQDN

[rhap4boyz]

We are trying to setup digital networking between Unity 8 and Unity Connection 8 for migration.  Both system in the same AD and Exchange Site.

We cannot do a flash cutover.

When setting up the Unity Interoperability gateway, what is the Interop Domain FQDN suppose to be?

What domain name should we give to the Unity Connection 8 server?

I read in the documentation that they cannot be the same.  I am kinda confused about this part.

Lets suppose that our AD domain name is mydomain.admin

and our email domain name is mydomain.com

Thank you!

[rhap4boyz]

In the documentation it says

"It should not match any SMTP domain used in the Exchange organization to which Cisco Unity belongs for any purpose other than for routing messages through the Interoperability Gateway for Microsoft Exchange."

"It must not match the SMTP domain of the Connection site gateway.  (You can check the SMTP domain on the System settings > SMTP Configuration > Server page in Cisco Unity Connection Administration on the Connection gateway.

What can I use for Unity 8?  What can I use for Unity Connection 8?