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
8 7 6 5 4 3 2 1
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
8 7 6 5 4 3 2 1
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
Summary of Contents for Explorer 4700
Page 18: ...xviii Cisco 4000 Series Hardware Installation and Maintenance Document Conventions ...
Page 116: ...Cable Specifications 2 Book Title 78 xxxxx xx ...
Page 132: ...D 6 Cisco 4000 Series Hardware Installation and Maintenance Entering the ROM Monitor Program ...
Page 134: ...E 2 Cisco 4000 Series Hardware Installation and Maintenance For United Kingdom Use Only ...
Page 136: ...F 2 Cisco 4000 Series Hardware Installation and Maintenance For European Community Use Only ...