166 DBS 576 (USA), Revised 6/11/98 576-13-700
Chapter 5. Key Telephone Features Section 700 - Operation

Operation

Related Programming
FF1-0-02: ARS for MCO Access Code 1/Route Advance for MCO Access Code
FF1-3: MCO Group
FF5-2: MCO Outgoing Trunk Assignments
FF5-3: MCO Incoming Trunk Assignments
FF4: FF Key Assignments
Considerations
Press the MCO key that flashes red to answer an outside call.
If you are already on a call appearing on an MCO key and you press anot her MCO key, a line on
the other MCO key is selected and the first call is dropped.
If a CO key is assigned, the CO Key LED will light when that specific trunk is used instead of
the MCO key LED.
There are five groups of outside lines: 9 and 81-84 (default).
MCO keys cannot be assigned on the DSS/72 or the EM/24.
An MCO key must be assigned in programming mode. The MCO key cannot be assigned by the
end user with FF key assignments.
Message Key
CPC-96, CPC-288, and CPC-576 All Versions
Description
The System supports the MSG key on the VB-44225 large-display phone. This key provides the
following functionality:

Operation Action

To originate a trunk call Press an idle MCO key.
The key blinks (green) as the call is made.
To receive a call on an MCO key. If ringing line preference is enabled, go off-hook.
If ringing line preference is not enabled, go off-
hook and press the MCO key with the green
flashing LED.
The LED lights solid green.
To place a call on Exclusive Trunk Hold Press the MCO key.
The key flashes green while the call is held.
To place a call on System Trunk Hold Press the HOLD key.
The key flashes green while the call is held.
To transfer a call Press HOLD, dial the destination extension, then
press PROG (if on-hook transfer is off) or go on-
hook.