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Section 700 - Operation Chapter 5. Key Telephone Features
ICX-50-700 ICX (International) issued October 2000 209
Trunk Queuing
Description
When you try to originate a call by MCO (enter 9 [UK/HK] or 0 [Taiwan, Malaysia, Indonesia]) and
all outside lines in a trunk group are busy, the System can call you when a line becomes free. Simply
pick up the handset and dial the telephone number when the Trunk Callback alert tone rings.
Operation
To set Trunk Queuing:
To respond to the Trunk Callback alert tone:
Hardware Requirements
•N/A
Considerations
• Response to the Trunk Callback must be within 15 seconds or Trunk Queuing will be cancelled.
• The Trunk Queuing feature may also be used if you hear a busy tone when trying to make a call
using the MCO Trunk Access feature.
Action Result
1. Lift the handset or press the ON/OFF key. Intercom dial tone
2. Enter a trunk access code (default = 9 [UK/HK], 0 [Taiwan,
Malaysia, Indonesia], or 81-84).
Busy tone
3. Enter the Callback Request code (default = 3 [UK/HK] or
3# [Taiwan, Malaysia, Indonesia]).
4. Press the ON/OFF key. Wait CBK-TRK
displays
5. Wait for the Trunk Callback alert tone.
Action Result
1. Lift the handset or press the ON/OFF key. • Outside dial tone
• CO XXX displays (where XXX = line
number