user manual

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.
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.
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.
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.
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.
When more than
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.
Switch Settings (Continued)
SWITCH NAME
SWITCH
NUMBER
SETTING
POSITION
FUNCTION CHECK
1 2 3 4
ON
ON
ON
No. of
BRI
SW
CONDITIONS