Polycom 4-Line Phone Owner's Manual page 8

Standard Setup Options:
This diagram depicts your setup options. By purchasing the
optional Wireless Transmitter and Wireless Adapters you may also
connect Desk Phones wirelessly.
Cordless Phones:
This diagram depicts the setup options for Cordless Phones.
Cordless phones can be used in conjunction with Shared Line
Phones and the optional Base Unit or they can be installed as Stand
Alone Phones.
8
Owner's Manual