Allows you to make a voice announcement to several people at the same time. The message is announced over the built-in speakers
of proprietary telephones and/or external speakers.
PBX
Private Branch Exchange. This is a small version of the phone
company's larger switching system.
Ports
(Voice Processing) The number of incoming lines that can occupy
the Voice Processing unit at the same time. I.E.: 2 ports / 2 incoming callers can access the Voice Processing unit.
