3Com 3C10402B Administrator's Manual page 105

displays on the secondary telephones with which it is associated. If
you disable this option, the bridged extension button on the
secondary telephone lights, however, the display panel does not
display a Caller ID.
The telephone's display panel can display three system or bridged
extension appearances, which are mapped to the buttons to the left of
the display panel.
By default, bridged extensions have priority over system appearances. To
give system appearances priority, change the priority of the primary
bridged extension to a higher value. The lowest value in the priority field
provides the highest priority.
Example: If you configure the primary telephone for a total of three
system appearances and no bridged extensions, when all three lines are
in use, a fourth call does not display in the display panel and goes directly
to voice mail.
Example: If you configure the telephone for three system appearances
and one bridged extension, a call to the primary telephone uses the
bridged extension line and can be answered by associated secondary
telephones. Any other calls to the primary telephone use the system
appearance lines and cannot be answered by associated secondary
telephones. If all three lines are in use, a fourth call causes the Message
Waiting Indicator on the primary telephone to flash, but the display panel
does not display any information. However, you can answer the call on
the unused system appearance line. You can also make a call on an
unused line.
Example: If you configure the telephone for three system appearances
and two bridged extensions, the bridged extension lines take priority over
the system appearance lines. If you make a call and put it on hold, and
then make a second call, by default, both calls are on bridged extension
lines. Because both bridged extensions are in use, any calls to the primary
telephone are on system appearance lines, and cannot be answered by
associated secondary telephones.
Example: If you choose two primary bridged extensions and give them a
priority of 1 and choose one system appearance and give it a priority of 0,
the system appearance will have the higher priority. When you make a
call, by default, the call is on the system appearance line. This ensures
that calls to the primary extension are on bridged extension lines and are
Creating and Managing Bridged Extensions 105