How do you program buttons on an Expansion Module for IP 1230 Phone on BCM 450?
It has been a very long time since worked on IP phones but never did an expansion module
Does the phone have a feature button? I can do Feature *1, *2, *3 ???

I can get the IP phone up, but never did expansion - so never looked at it.
Got it scheduled for Wed 9/15/21
Thanks for any help.