Handset Tones - AT&T System 25 User Manual

Handset Tones

System 25 signals you with tones that are heard through the
handset. The tones and their descriptions are listed below.
DIAL TONE
lllllllllllllllllllllllllllllllllll
You can dial.
CONFIRMATION TONE
Your action has been accepted.
RINGBACK TONE IIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIII (repeating on/off tone)
The number you dialed is ringing.
SPECIAL RINGBACK TONE IIIIIIIIIIIIIIIIIIIIIIIIIIII
one short, dull tone)
The person you dialed is busy, and has been notified of Call
Waiting.
BUSY TONE IIIII
IIIII
The number you dialed is busy.
FAST BUSY TONE III III III III (fast repeating on/off tone)
The number you dialed was busy, misdialed, or restricted.
CALL WAITING TONE (short tone(s) heard during a call)
III (the waiting call is an inside call)
(the waiting call is an outside call)
Ill Ill
You have a call waiting to be answered.
QUEUEING TONE
Your request for a callback has been confirmed.
DEQUEUEING TONE
The extension or outside line that you requested for callback is
now available.
(a continuous steady tone)
llllllllllllllll
I
(three short tones)
I II
I
II
IIIII (repeating on/off tone)
(five short tones)
II II II II II
(three short tones)
II II II
(one long tone and
II
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