OCC (Other Common Carrier) 119 FlexSet 120/280 User Guide
Display Message Key LED
OCC (Other Common Carrier) #127
OCC is for users with rotary trunks and/or FlexSets defined with Auto transfer.
This feature allows you to send DTMF tones over a trunk in order to use
various features and services such as OCC’s, answering machines, voice mail
systems and any other service that requires DTMF tones.
To send DTMF signaling during a trunk call:
1. Press [OCC].
2. Dial the required digits.
Note: This feature can only be activated if you have a programmed OCC
key. To program an OCC key, use feature code #127.
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