Polycom 550 - Manual (Page 68)

User Guide SoundPoint IP 550 Phone
4 - 2
For example, the first figure shows extension 6721 in an outbound call with
6722.
The second figure shows an incoming call from 1-800-765-9266.
To answer an incoming call when configured for multiple call appearances:
>> Do one of the following steps:
— Press or the Hold soft key to put the original call on hold.
— Press to access the new call.
Soft key labels are updated on the display with Answer, Reject, and
Forward.
Answer the incoming call.