NEC UNIVERGE SV8100 Features & Specifications Manual page 693

UNIVERGE SV8100
This turns off both the handset and Handsfree microphone.
.
To turn your telephone microphone back on:
1. Press MIC.
Use MIC only if you pressed it initially to turn off your Handsfree microphone.
.
- OR -
Press the Microphone Cutoff key (Program 15-07 or SC 851: 40).
Use the Microphone Cutoff key only if you pressed it initially to turn off your handset or Handsfree microphone.
.
Microphone Cutoff
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