AT&T SYSTEM 25 User Manual page 8

Using the Selector Console
For example, when placing a call to extension 273:
– Press the 200 Group Select button on the bottom row.
– Press the 73 DXS button.
For example, when 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
You can dial.
CONFIRMATION TONE
Your action is accepted. Proceed to the next step.
RINGBACK TONE
on/off tone)
The number you dialed is ringing.
SPECIAL RINGBACK TONE
one short, dull tone)
The person you dialed has Call Waiting.
BUSY TONE
The number you dialed is busy.
FAST BUSY TONE
The number or access code you dialed is busy, misdialed, or
restricted.
QUEUING TONE
Your callback request for a busy station or outside line has been
confirmed.
DEQUEUING TONE
The station or outside line that you requested is available, and
your call can now be completed.
4
(a continuous steady tone)
(three short tones)
(repeating
(one long tone and
(repeating on/off tone)
(repeating on/off tone)
(five short tones)
(three short tones)