Lucent Technologies MERLIN Plus Release 2 System Manual page 110

FIGURE 4-1 The BIS-34D with display as attendant console.
Call
appearance
buttons
Test/Program
switch
Dial
pad
Ringer
volume
control
4-2 Overview
Display
buttons
AT&T
Message light
HFAI light
Display
contrast
control
Display
BIS-34D
Speakerphone
volume control
Speakerphone light
Microphone light
Feature
buttons