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176 ICX (International) issued October 2000 ICX-50-700
Chapter 5. Key Telephone Features Section 700 - Operation
Hardware Requirements
•N/A
Considerations
•N/A
MCO Appearances
Description
You can make and receive trunk calls using an MCO key. Each extension can have up to 5 MCO keys.
An MCO key can be assigned to any of the pooled trunk groups. Pressing the MCO key is the same as
dialling the MCO Access Code (usually 9 [UK/HK], 0 [Taiwan, Malaysia, Indonesia], or 81-84 by
default).
Operation
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 another MCO key, a line on
the other MCO key is selected and the first call is dropped.
• If a trunk key is assigned, the trunk key LED will light when that specific trunk is used instead of
the MCO key LED.
To place a call on System Trunk Hold (page 133)... 1. Press the HOLD key.
To transfer a call... 1. Press the HOLD key.
2. Dial the destination extension.
3. Press the PROG key.
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.
Operation Action