Polycom VVX 1500 D - Manual (Page 108)

User Guide for the Polycom VVX 1500 D Phone
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Supporting Multiple Line Keys Per Line
Your system administrator can assign each phone line to a single Line Key, or
to multiple Line Keys.
Incoming and outgoing calls for a phone line will be distributed evenly across
all Line Keys that are assigned to the phone line. For example, if you have two
Line Keys set up as 1952, and you have an active call for 1952 on the first
Line Key, an incoming call for 1952 will go to the second Line Key.
The following figure shows a phone that is set up with one phone line (1952)
that is assigned to three Line Keys. In this case, incoming and outgoing calls
for line 1952 will be distributed evenly across the three Line Keys. There are
three available keys that are set up as Speed Dial Keys.
Your phone can be set up to have a combination of lines with a single Line Key
and lines with multiple Line Keys.