I have been installing Norstar systems for 20 years. I have never seen this happen but I am sure it is something stupid.

I have 1 phone that will not allow Voice call. I have checked the obvious stuff that handsfree answer Y. The phone has the speaker set to Auto. It is a 7316e phone. It seems like I have missed a minor detail that is driving me crazy.

Have you made sure the phone is not faulty? What happens to the call?

Yep I swaped the Phone with a working set in the next cube. Trouble followed the Ext.

You can allow or deny "Voice Call" in programming for each set. What happens when you F66?

By default it is "Deny".

When I press my Voice Call button and the Ext # in question it says " No Voice Call " and rings the intercom.

Try manually entering the ext number after hitting the voice call button.

Sounds like they activated the Voice Call Deny feature. Turn that off and I bet it will work.

I just found the code It is F #88 to turn off Voice Call Deny. Thanks to all that commented