Lucent Technologies 8.2 User Manual
DEFINITY ECS Release 8.2
Administrator’s Guide
Administrator’s Guide
555-233-506
Issue 1
April 2000
Screen reference
843
Multifrequency-Signaling-Related System Parameters
17
last-2-digits
The switch sends this signal to adjust the outpulsing pointer so that the last 3 digits
can be resent. This signal is used on DOD calls.
can be resent. This signal is used on DOD calls.
last-3-digits
The switch sends this signal to adjust the outpulsing pointer so that the last 4 digits
can be resent. This signal is used on DOD calls.
can be resent. This signal is used on DOD calls.
next-digit
The switch sends this signal to request the next digit. This signal is used on both
DID and DOD calls.
DID and DOD calls.
next-ani-digit
The switch sends this signal to request the next ANI digit. This signal is used on
DID and DOD calls.
DID and DOD calls.
restart
The switch sends this signal to request the whole digit string again. This signal is
used on DOD calls.
used on DOD calls.
setup-sppath
The CO sends this signal to the switch to set up a speech path. This signal is used
on DOD calls and on DID calls in Belgium.
on DOD calls and on DID calls in Belgium.
Group B signals
Group B signals enhance group A signals for backward signaling from the
destination switch by providing the status of the called party. In addition, if the
originating switch uses group II signals, the destination switch answers with
group B signals. Group B signals are as follows:
destination switch by providing the status of the called party. In addition, if the
originating switch uses group II signals, the destination switch answers with
group B signals. Group B signals are as follows:
busy
This signal is sent to indicate that the called party is busy. On DID calls, the signal
is sent to the CO if there is no coverage point to terminate the call. If the switch
receives this signal on DOD calls, it plays busy tone to the calling party and drops
the trunk.
is sent to the CO if there is no coverage point to terminate the call. If the switch
receives this signal on DOD calls, it plays busy tone to the calling party and drops
the trunk.
congestion
This signal is sent to indicate that the system is congested and the call cannot be
terminated successfully. On DID calls, the signal is sent to the CO to indicate that
a resource is not available. On DOD calls, if the switch receives this signal,
reorder tone is played to the calling party and the trunk is dropped.
terminated successfully. On DID calls, the signal is sent to the CO to indicate that
a resource is not available. On DOD calls, if the switch receives this signal,
reorder tone is played to the calling party and the trunk is dropped.