Question about Panasonic VB-43223 Corded Phone
This is all done in system programming for the system. You most likely have an installation company that handles changes and additions to the system and programming. Otherwise you would need to gain access to a programming manual (not a user guide) for the phone system itself (not your phone) Programming these is not simple especially for someone who has never done it.
Posted on Jul 12, 2007
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