NEC 2000 IVS Manuel D’Utilisation
PN-2BRTC (BRI)
ND-45504 (E)
CHAPTER 4
Addendum-001
Page 65-4
JULY, 1998
Revision 2.1
The figure in the SWITCH NAME column and the position in
in the SETTING POSITION
column indicate the standard setting of the switch. When the switch is not set as shown by the figure and
, the setting of the switch varies with the system concerned.
Note 1:
Set the groove on the switch knob to the desired switch position.
Note 2:
When the power is on, set the MB switch to ON (UP position) before plugging/unplugging the circuit
card.
card.
Note 3:
The system can supply clock signals from two clock supply routes.
In normal condition, the system synchronizes to the clock signals supplied on the PLO 0 of MP card via
the Back Wiring Board, and if the clock signals are failed, the clock supply route takes over to PLO1
automatically. Set SW11-2 and SW11-3 as follows.
In normal condition, the system synchronizes to the clock signals supplied on the PLO 0 of MP card via
the Back Wiring Board, and if the clock signals are failed, the clock supply route takes over to PLO1
automatically. Set SW11-2 and SW11-3 as follows.
SW11 (Dip SW)
1
For normal operation (BRI mode)
OFF
Not used
2
Note 3
ON
Output clock signals according to the
switch setting of SW11-3.
switch setting of SW11-3.
OFF
Do not output clock signals.
3
Note 3
ON
Output clock signals to PLO 0 of MP.
OFF
Output clock signals to PLO 1 of MP.
4
For normal operation
OFF
Not used
BRI 0
BRI 1
BRI 2
----
BRI 11
REMARKS
SW
11-2
SW
11-3
SW
11-2
SW
11-3
SW
11-2
SW
11-3
----
SW
11-2
SW
11-3
When one BRI is
provided.
provided.
ON
ON
The clock signals are supplied to the
PLO through No. 0 circuit the BRI. If
the clock supply route of No. 0 circuit
is failed, the clock supply route of No.
1 circuit takes over automatically.
PLO through No. 0 circuit the BRI. If
the clock supply route of No. 0 circuit
is failed, the clock supply route of No.
1 circuit takes over automatically.
When more than
one BRI is pro-
vided.
one BRI is pro-
vided.
ON
ON
ON
OFF
OFF
ON
----
OFF
ON
The system can supply the clock
signals from BRI 0 or BRI 1. The
system is synchronized to the BRI 0
clock signals normally, and if both
No. 0 circuit clock supply route and
No. 1 circuit clock supply route is
failed, the BRI 1 takes over.
signals from BRI 0 or BRI 1. The
system is synchronized to the BRI 0
clock signals normally, and if both
No. 0 circuit clock supply route and
No. 1 circuit clock supply route is
failed, the BRI 1 takes over.
Switch Settings (Continued)
SWITCH NAME
SWITCH
NUMBER
SETTING
POSITION
FUNCTION
CHECK
1 2 3 4
ON
ON
ON
No. of
BRI
SW
CONDITIONS