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PERCEPTION 4000 FEATURE OPERATIONPERCEPTION 4000 FEATURE OPERATION
4-55
The station or trunk you
have dialed is busy or is
in Do Not Disturb mode.
A station call is camped-
on to your line.
A trunk call is camped-
on to your line.
Proceed with dialing.
Additional digit entry is required
to complete the current feature.
Your call has been
denied due to a dialing
error or service restrictions.
Feature activation has been
accepted by the system.
Advance
Tone
Busy
Tone
Call Waiting
Tone (Trunk)
Override
Warning
Tone
Call Waiting
Tone (Station)
Dial Tone
Your call is ringing.
Override
Access
Tone
Recall
Dial Tone
Reorder
Tone
Ringback
Tone
Success
Tone
TONE
TEMPORAL PATTERN
(TIME IN SECONDS)
FREQUENCY
(Hz)
A: 440/480
B: Silence
480/620
A: 350/440
B: Silence
A: 350/440
B: Silence
350/440
A: f = 440
f = 620
B: Silence
C: 620
480/620
440/480
f = 440
f = 620
1
2
A: 620
B: Silence
1
2
0.5 0.5
0.5
A
B
0.2
0.5
f
1
0.5
f
2
0.5
f
1
0.5
f
2
B
0.2
C
A
INDICATION
A
B
0.2
0.2
0.2
A
B
0.2
0.2
0.2
1
0.25
0.25
33
1
0.5
f
1
0.5
f
2
0.5
f
1
f
2
f
1
0.25
Both the attendant and station
parties will hear this tone while
a call is being monitored.
Your station is the subject of an
Attendant Override. Following
this tone, you will hear Override
Access Tone while your call is
being monitored.
A: 350/440
B: 620
The call you placed is being
routed through a more
expensive call facility.
A
B
0.2
0.2
0.2
A
0.4 0.2
0.4
0.2
0.2 0.2
0.2
0.2
0.2
0.2
B
You have a message waiting.
Stutter
Dial Tone
A: 620
B: Silence
A
B
0.2
0.2
0.2
Table 4-1
Tone Patterns