About this task
To allow users to make intercom calls, you must administer feature buttons on the telephones in the intercom group. You can administer buttons for dial intercom, automatic intercom, or both on multi-appearance telephones. You can’t administer either intercom feature on single-line telephones, but you can assign single-line telephones to intercom groups so those users can receive intercom calls.
As an example, we will set up automatic intercom between extensions 2010 (dial code = 1) and 2011 (dial code = 2) in intercom group 1.