AT&T System 25 - Manual (Page 8)

Using the Selector Console
■ If you are placing a call to extension 273:
➤ Press the 200 Group Select button on the bottom row.
➤ Press the 73 DXS button.
■ If you are placing a call to extension 4519:
➤ Press the 4500 Group Select button.
➤ Press the 19 DXS button.
Handset Tones
System 25 signals you with tones that are heard through the
handset. The tones and their descriptions are listed below.
DIAL TONE llllllllllllllllllllllllllllllllllllllllllllllllllll (a continuous steady tone)
You can dial.
CONFIRMATION TONE ll ll ll (three short tones)
Your action has been accepted.
RINGBACK TONE llllllllllllll lllllllllll (repeating on/off tone)
The number you dialed is ringing.
SPECIAL RINGBACK TONE lllllllllllllllllllll ll (one long tone and
one short, dull tone)
The person you dialed is busy, and
Waiting.
BUSY TONE lllll lllll lllll (repeating
The number you dialed is busy.
FAST BUSY TONE lll lll lll lll (fast
has been notified of Call
on/off tone)
repeating on/off tone)
The number you dialed was busy, misdialed, or restricted.
CALL WAITING TONE (short tone(s) heard during a call)
lll (the waiting call is an inside call)
lll lll (the waiting call is an outside call)
You have a call waiting to be answered.
QUEUEING TONE ll ll ll ll ll (five short tones)
Your request for a callback has been confirmed.
DEQUEUEING TONE ll ll ll (three short tones)
The extension or outside line that you requested for callback is
now available.
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