AT&T 75 Telephone User Manual


 
CHAPTER 2. DESCRIPTION
Timed Reminder Tone
A high-pitched tone, on for about 1/3 second and off for about 1 second;
indicates that a single-party call has been on hold at the console for longer than
the preset time.
This tone is also heard when the Attendant Recall feature is
activated and when an unanswered attendant-extended call returns to the
console.
Emergency Access Tone (V3 and Generic 1)
A special tone that indicates there is an Emergency Access call to the attendant.
This tone is heard only on the latest models of the Basic Console and all
models of the Enhanced Console.
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