Hi Jknichols and Phonemeister, thank you so much.
It works back, and button 01 use for "Intercom".
I got something else after reprogram, Now the incomming fax also going to welcoming message and not going directly to the fax machine (analog line).
Is there any program that I was accidently changed, so change the incomming fax setting. help

Again, thank you so much.

Pkardono