AT&T 75 Telephone User Manual


 
CHAPTER 3. OPERATING THE CONSOLE
5. Press Trunk Group Select button.
• Atnd lamp at idle call appearance button lights.
• Pos Avail lamp goes dark.
Dial tone; go to Step 6.
6. Dial the outside number, and listen for call progress tone.
Ringback; if call is answered, go to Step 7. If call is not answered, go to Step
8 or 9.
• Busytone; go to Step 8 or 9.
• Intercept tone—
call cannot be completed as dialed; go to Step 8 or 9.
7. 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.
8.
To try to call the same number again or place another call immediately, press
(Cancel);
return to Step 1.
Call progress tone stops.
Dial tone starts.
9. To abandon the call attempt, press (Release.)
Call progress tone stops.
Atnd lamp and the display go dark.
Pos Avail lamp lights.
Procedure complete.
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