Polycom 4020 Telephone User Manual


 
6.2 During conversation
6.2.1 Volume regulation:
Use the two keys placed at the right side of the handset for volume control.
6.2.2 Microphone mute:
Press the -key (MUTE), “MIC. MUTED” is showed in the display.
Press the -key (MUTE) to enable the microphone again.
6.2.3 Transferring the call to another handset:
Press the R-key, and dial new number.
Press the -key and the call is transferred to the other handset.
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