This is my first go at this procedure so bear with me. I have two sites: A.com and B.local
A.com is my main domain controller which all my user accounts are created in. B.local domain controller was created to run DNS and DHCP at that location and also to make logging in faster for that location (I just got this account so I don't know why they set it up this way) . We have a new phone system that requires the users in the B.local to log in using the A.com domain. I have tried to create the trust but I get an error in the wizard "CANNOT CONTINUE" and "because the specified domain can not be contacted". I have tried both options and no go. Any help would be appreciated.