6-4
Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 6 Connecting ISDN BRI Network Modules
4- and 8-Port ISDN BRI U Network Modules
Figure 6-6
4-Port ISDN BRI with NT1 Network Module (U Interface)
Figure 6-7
8-Port ISDN BRI with NT1 Network Module (U Interface)
Connecting BRI U Modules to a Network
To connect a BRI U module to a network, use a straight-through RJ-45-to-RJ-45 cable to connect the
ISDN BRI port to an RJ-45 jack. (See
Figure 6-8
.) These ports are color-coded red.
Figure 6-8
Connecting a BRI U Network Module to an RJ-45 ISDN Jack
BRI 3
EN
BRI
U
H7259
B1
B2
BRI 2
B1
B2
BRI 1
B1
B2
BRI 0
B1
B2
NT1
NT1
NT1
NT1
BRI U ports (RJ-45)
BRI 3
EN
BRI
U
H7264
B1
B2
BRI 2
B1
B2
BRI 1
B1
B2
BRI 0
B1
B2
NT1
NT1
NT1
NT1
BRI 7
B1
B2
BRI 6
B1
B2
BRI 5
B1
B2
BRI 4
B1
B2
NT1
NT1
NT1
NT1
NT1 LEDs
ISDN BRI LEDs
Enable LED
BRI 3
EN
BRI
U
B1
B2
BRI 2
B1
B2
BRI 1
B1
B2
BRI 0
B1
B2
NT1
NT1
NT1
NT1
H7474
RJ-45 jack
BRI U port (RJ-45)
Straight-through
RJ-45-to-RJ-45
cable