During a call
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Centrex/Exchange Switchhook Flash
Centrex/Exchange Switchhook Flash enables you to signal the Central
Office/Exchange (CO) during an established call to use a Centrex service
such as Call Transfer or Three-way Calling. Since CO features are part of
the MSL-100, this feature is not applicable to the MSL-100.
To use Centrex/Exchange Line Switchhook Flash:
1. Press Trunk Switchhook Flash. You
hear a special dial tone.
2. Dial the codes for your custom Centrex
feature.
Trunk Switchook Flash