Vertical Edge 120 Instruction Manual Page 333

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DX-120 Programming Manual MULTIPLE CALL HANDLING
Multiple Call Handling - Transferring Calls
With the Call Key, users are able to track status of Trunk calls without needing a Line Key for each CO line. As
indicated, the Call Key becomes associated with the Trunk call and provides status for that call as long as the call is
active at the user’s extension.
When transferring Call Key calls, the Call Key provides status during the transfer
process.
The table below indicates the Call Key lamp status when a Trunk call is being transferred from one extension to
another extension.
Note that the table below assumes that neither Extension A or Extension B has a Line Key
programmed for the CO line that the Trunk call is using, thus the status is provided on the Call Keys.
CALL TRANSFER LAMP INDICATORS
HINT
Also refer to “Multiple Call Handling - Transferring Calls” on page 325 and “Multiple
Call Handling - General Lamp Indicators” on page 326.
Multiple Call Handling - Conference Calls
When a user establishes a conference call with trunks, assuming there is no Line Key for the CO lines that are utilized
in the conference call and the user has available Call Keys, the Call Key lamp indicator will provide status of the active
Trunk calls that make up the conference call.
The user can deliberately release or talk privately by pressing the
associated Call Key.
Once the user (controller) performs an Unsupervised Conference (Feature +77), the Call Key lamp indicators involved
with the conference call become dark and available and the user’s extension is returned to idle.
If the user rejoins the conference call (Feature +77), the Call Keys will provide status of the trunks involved in the
conference call assuming there are available Call Keys available.
EXTENSION
CALL KEY
LAMP BEFORE
TRANSFER
CALL KEY
LAMP DURING
TRANSFER
CALL KEY
LAMP AFTER
TRANSFER IS
COMPLETE
CALL KEY
LAMP AFTER
CALLED
PARTY
ANSWERS
Ext. A
(Transferring Party)
Fast flashing
(flickering)
green
Slow flashing
green
Slow flashing
green
Dark (available)
Ext. B
(Extension Trunk call
being transferred to -
i.e., answering party)
Dark (available) Dark (available)
Fast flashing red
(CO line ringing)
Fast flashing
(flickering)
green
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