Hands-Free Unit
The Hands-Free Unit (HFU) is a speakerphone that allows
people to place and answer outside and intercom calls
without using the handset (Figure 2-32). Connect a HFU
to the “OTHER” jack on the voice terminal.
D8AC
cord
Microphone
light
Speakerphone
light
Volume control
FIGURE 2-32 A Hands-Free Unit.
2-120 Adding Accessories