You have to program from port 005, which most often is extension 205 by default. To be sure you are at port 005, use a 20 button display phone and press [Intercom] # 4 0 2. The display will tell you the physical and logical port which should come up as 005. Now you at least know where you have to program.
You have to go into system programming. Someone will email you the passcode to get in. You press [Spkr] * 2 9 [Hold] and that takes you into the program. You press [Spkr] then the three digit port number ((most likely extension 211 will be port 011, extension 204 will be port 004, port 221 will be port 021)) then 1 then press the button you want to program either a one touch extension or whatever else.
If you want the button to be extension 208, you would dial # 0 0 8, another button extension 221, you would dial # 0 2 1, etc. and when you are done, dial [Hold] etc. then to get out of programming, [Spkr] # # [Hold] and once again [Spkr] # # [Hold].
All of this is much faster if you have a manual or have someone walk you through it on the phone.
Remember you press the buttons on the phone to program the buttons on the add on module, you never press the buttons on the add on module to program.
