AT&T MERLIN LEGEND Analog Direct-Line Console Operator's Manual page 39

Handling Calls
To Answer a Voice-Announced Call on BIS-22D,
BIS-34, and BIS-34D Consoles
You can answer a voice-announced call in any of the following
ways:
Use the headset.
Press the Microphone button to talk over your speakerphone.
Use HFAI. If HFAI is on before the call comes in, you can talk
directly into the speakerphone without doing anything else.
Lift the handset.
To Answer a Voice-Announced Call on a
MERLIN II System Display Console
You can answer a voice-announced call in either of the
following ways:
Use the headset.
Lift the handset.
2-6 A n s w e r i n g C a l l s