User guide

Aastra - 2735-007 33
One Directory Number Assigned to Multiple Phones
Occasionally, the same directory number is assigned to more than one phone. (This can
be referred to as a Bridged Line Appearance or BLA.)
Example
In the following example, Phone A and Phone B have the same directory number
assigned to a line/call appearance key on both phones. The following applies to call
handling in this situation:
Phone A:
 When Phone A goes off-hook on the line, it takes control of the line and the
associated call appearance.
 Phone A controls transfer, conference, hold, etc.
 Phone A shows a green status lamp on the line appearance if the call is on L1-L4.
 The call appearance lamp will not be lit unless the Phone A is involved in a transfer,
or conference.
Phone B:
 Phone B shows a red status lamp on the shared line appearance key, indicating Phone
A has control of the line.
 The call appearance lamp will not be lit unless the Phone A is involved in a transfer,
or conference.
 If Phone B goes off-hook on the line appearance, silence is heard followed by dial
tone because the call is private to Phone A.
 If Phone B goes off-hook on the associated call appearance, even though the lamp
may not be lit, reorder tone is heard.
If the shared directory number is assigned to a programmable hard key, status lamps are
always red, but the same rules apply.
Calls on Hold with BLA
 If Phone A places the call on hold, it can be retrieved by Phone B by pressing the key
of the red flashing lamp on Phone B.
 When Phone B takes control of the call, the line lamp changes to green and the
display changes to reflect the details of the connected call. Phone A goes back to the
off-hook display or the idle state display. The Phone A red status lamp on that line
indicates Phone B has control of the call.