NEC SV8500, Operation And Maintenance Manual

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CHAPTER 5 Operation Procedure for System with PIR
8
Detection of Release at the
time of Outgoing
Connection
• Loop System
Detection of polarity reversal across tip and
ring.
• E&M System
Detection of Release Signal (ground or
–48V) on E lead.
608 milliseconds (standard)
Timing can be assigned using the
ARTD command.
Table 5-5 Timings for Senders
ITEMS FOR STATUS
SUPERVISION
CONDITIONS FOR SUPERVISION TIMING SPECIFICATIONS
1
Sender Acknowledge Wait
Timer
Timing limit for waiting to receive connection
acknowledgement signal from the opposite
office after seizing the opposite office. 4 seconds (standard)
Timing can be assigned using the
ASYD, SYS1, INDEX 130 command.
2
Sender Prepause Timer
Time from sender seizure until sending of the
1st digit where connection acknowledgment is
made by interface with the opposite office.
DP: 3 seconds (standard)
PB: 2.5 seconds (standard)
Timing can be assigned using the
ASYD, SYS1, INDEX 131 command.
3
Sender Inter-digit Timer
Inter-digit timing for the numbers sent out by
the sender.
• For DP
10 pps: 860 milliseconds
(standard)
20 pps: 460 milliseconds
(standard)
Timing can be assigned using the
ASYD, SYS1, INDEX. 132
command.
• For PB
60/120 milliseconds (selected by
ONSG of ARTD command.)
Timing can be changed using the
ASYD, SYS1, INDEX 133
command.
ITEMS FOR STATUS
SUPERVISION
CONDITIONS FOR SUPERVISION TIMING SPECIFICATIONS