Cisco WS-X4013 Hardware Maintenance Manual - Page 65

The multiport BRI network processor module requires that all its interfaces connect to

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Making Network Connections Warning Network hazardous voltages are accessible in the BRI cable. If you detach the BRI cable, detach the end away from the router first to avoid possible electric shock. Network hazardous voltages are also accessible on the BRI module in the area of the BRI port (RJ-45 connector), even when power is turned OFF. (See Figure 3-7 and Figure 3-8.) Figure 3-7 Four-Port BRI Network Processor Module PORT-7 PORT-6 PORT-5 PORT-4 ISDN BRI PORT-3 PORT-2 PORT-1 PORT-0 7 6 5 4 3 2 1 0 RJ-45 BRI ports LEDs Figure 3-8 Eight-Port BRI Network Processor Module 87654321 H2520 PORT-7 PORT-6 PORT-5 ISDN BRI PORT-4 H2412 PORT-3 PORT-2 PORT-1 PORT-0 7 6 5 4 3 2 1 0 RJ-45 BRI ports LEDs 87654321 Note The multiport BRI network processor module requires that all its interfaces connect to the same carrier or from carriers with synchronized master clocks. If the BRI module connects to ISDN interfaces that have an unsynchronized master clock, the module's interfaces will occasionally lose some packets. Installing the Router 3-7

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Installing the Router
3-7
Making Network Connections
Warning
Network hazardous voltages are accessible in the BRI cable. If you detach the BRI cable,
detach the end away from the router first to avoid possible electric shock.
Network hazardous
voltages are also accessible on the BRI module in the area of the BRI port (RJ-45 connector), even
when power is turned OFF. (See Figure 3-7 and Figure 3-8.)
Figure 3-7
Four-Port BRI Network Processor Module
Figure 3-8
Eight-Port BRI Network Processor Module
Note
The multiport BRI network processor module requires that all its interfaces connect to the
same carrier or from carriers with synchronized master clocks. If the BRI module connects to ISDN
interfaces that have an unsynchronized master clock, the module’s interfaces will occasionally lose
some packets.
H2520
RJ-45
BRI ports
LEDs
87654321
PORT-7
PORT-6
PORT-5
PORT-4
PORT-3
PORT-2
PORT-1
PORT-0
7
6
5
4
3
2
1
0
ISDN
BRI
H2412
RJ-45
BRI ports
LEDs
87654321
PORT-7
PORT-6
PORT-5
PORT-4
PORT-3
PORT-2
PORT-1
PORT-0
7
6
5
4
3
2
1
0
ISDN
BRI