AT&T Merlin II Feature Module 2 System Manual page 185

Hands-Free Unit
DESCRIPTION
like terminal. Note that incoming calls ring only at the voice terminal,
a voice
not at the attached device.
Using Auto Mode
Set the switch to Auto to connect a modem, answering machine, or other
automatic answering device. Program an Auto Answer-All feature button and
activate it so the device answers incoming calls automatically. If an extension
is attached, it will ring.
The Hands-Free Unit (HFU) shown in Figure 2-22 is a speakerphone that
allows you to place and answer outside and intercom calls without using the
handset.
FIGURE 2-22 The front panel of the Hands-Free Unit.
Speakerphone
light
I
Volume control
Accessory Equipment
Microphone
light
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