Vodavi Starplus DHS, Техническое руководство

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DHS General Description 2-7
Digital Key Telephones
The DHS and DHS-E support three proprietary digital key telephones (Basic, Enhanced
and Executive). All key telephone models operate on one single twisted pair and provide
D/A and A/D conversion at the terminal. These key telephones support hot key pad for
dialing digits at any time.
Basic Key Telephone
The basic key telephone (refer to Figure 2-6) is equipped with a speaker for monitoring
call progress and receiving call announcements but is not equipped with a microphone
for hands-free 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.
Figure 2-6: Basic Key Telephone