AT&T 75 Telephone User Manual


 
CHAPTER 3. OPERATING THE CONSOLE
If the DXS lamp is dark, the extension is idle; go to Step 3.
If the DXS lamp is lighted, the extension is active; you can still place the call,
but it may wait or go to a covering party.
3. Press the DXS button for the desired extension number; observe the lamps, and
listen for call progress tone.
The Atnd lamp at the idle call appearance button lights.
Pos Avail lamp goes dark.
Ringback; if call is answered, go to Step 6. If call is not answered, go to Step
7 or 8.
Ž Call waiting ringback; wait for answer, go to Step 6.
Busy tone; go to Step 7 or 8.
Intercept tone—unassigned number dialed; go to Step 7 or 8.
Dial tone.
4.
Press (Start).
Atnd lamp at idle call appearance lights.
Pos Avail lamp goes dark.
5. Dial the desired extension number and listen for call progress tone.
Tones same as Step 3.
6.
Talk to the called party; when the conversation is finished, press
(Release).
• Atnd lamp and the display go dark.
Pos Avail lamp lights.
Procedure complete.
7. To try to call the same number again or place another call immediately, press (Cancel);
return to Step 1.
3-3
Call progress tone stops.
Dial tone starts.