6-2
Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 6 Connecting ISDN BRI Network Modules
4- and 8-Port ISDN BRI S/T Network Modules
Figure 6-1
4-Port ISDN BRI Network Module (S/T Interface)
Figure 6-2
8-Port ISDN BRI Network Module (S/T Interface)
Connecting BRI S/T Modules to a Network
To connect a BRI S/T network module to a network, use a straight-through RJ-45-to-RJ-45 cable to
connect the ISDN BRI port to an NT1. (See
Figure 6-3
.) These ports are color-coded orange.
Figure 6-3
Connecting an ISDN BRI S/T Network Module to an NT1
BRI 3
BRI 2
BRI 1
BRI 0
EN
BRI
S/T
H7267
BRI S/T LEDs
B1
B2
B1
B2
B1
B2
B1
B2
Enable LED
BRI 7
BRI 6
BRI 5
BRI 4
BRI 3
BRI 2
BRI 1
BRI 0
EN
BRI
S/T
H7254
BRI S/T ports (RJ-45)
BRI S/T ports (RJ-45)
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
H7475
NT1 device
BRI
ST
BRI 7
BRI 6
BRI 5
BRI 4
BRI 3
BRI 2
BRI 1
BRI 0
EN
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
B1
B2
S/T port
BRI S/T port (RJ-45)