Using mlpp – Mitel Superset 4150 User Manual

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Trunk Flash

The Trunk Flash feature allows you to access Centrex features (if available)
while you are talking on an outside call.

To flash a trunk while talking on an outside call:

1. Press TRANS/CONF.
2. Dial *57 for a single flash or *56 for a double flash.
3. Wait for dial tone.
4. Dial the Centrex feature access code.

USING MLPP

Multi-Level Precedence and Preemption (MLPP) facilitates emergency
communications for the military. MLPP enables authorized users to specify a
precedence level when making a call, and to preempt calls with a lower
precedence level.