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Operation
025-9368H
35
DISCONNECT TONES
In all cases, when the call is terminated, disconnect beeps are sent to both the telephone and mobile.
The disconnect beeps are different depending on the method or reason that disconnect was initiated.
Most of the time, five short (50 millisecond) beeps will be heard indicating normal disconnect. This
happens when either the mobile disconnected the call, or one of the timers expired (either call limit
or mobile activity). When the telephone party disconnects the call with a “#” or “#0”, a long dual
tone will be sent to the telephone and mobile. If the call is terminated by the Model 748 because it
detects a busy signal or second dial tone, three fast busy tones are sent to the mobile. These
diagnostic tones allow the user to determine the source of the disconnection.
Event
Tone sequence
Phone party disconnects call
Long dual tone
Mobile disconnects call
Five fast beeps
Mobile activity timer expires
Five fast beeps
Call limit timer expires
Five fast beeps
Busy tone terminates call
Three fast busy tones
Second dialtone terminates call
Three fast busy tones
Toll or time restriction
Three high/low error tones
Priority override
High/Low alert
When a call is terminated with three high/low error tones, a single digit error code in Morse follows.
This is to further diagnose why the call was terminated.
Error
Code
Invalid steering digit
1
Time restriction
2
Toll restriction
3
Invalid user ID
4
Application note:
If the three high/low error tones are heard following the normal disconnect tones (five fast beeps),
the Call detail records are at 80% capacity or greater. This is an indication that the Call detail records
should be downloaded to prevent loss of data.
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