General Description
Digital Key Telephones
The
DHS
and
DHS-E
support three proprietary digital
key telephones (Basic, Enhanced and Executive).
These key telephones support a hot-keypad for
dialing digits at any time.
Basic Key Telephone
The basic key telephone (refer to Figure 1) is equipped
with a speaker for monitoring call progress and
receiving call announcements but is not equipped
with a microphone for Hands-Free (HF) reply. The
basic key telephone has 16 buttons, 8 of which are
fixed function buttons to control settings and primary
key telephone call processing operations: HOLD,
TRANS (Transfer), FEAT (Feature), CLEAR, MUTE, SPKR
(Speaker), and Volume UP/DN.
Eight buttons are user-programmable feature
buttons, that are equipped with dual color LED with
preassigned default settings for quick power up
operation. These buttons are arranged in two rows
and four columns. Beginning at the top left button
they are assigned the following default values: CO line
1, CO line 2, CO line 3, CO line 4, CO line 5, CO line 6,
HF/Tone and Message Waiting.