Cisco Cisco 1900 2900 3900 Series 8-Port Gigabit Ethernet HS-WIC with PoE Installation Guide
Connecting ISDN BRI S/T High-Speed WAN Interface Cards to a Network
Upgrading ISDN BRI Network Modules
5
Cisco IOS Release 12.5(1)
OL-14759-01
Connecting Point to Multipoint
To connect one or more basic ISDN ports, use the ISDN BRI interface to connect the point-to-multipoint
S interface.
S interface.
Note
The resistor is added to the bus at the furthest point from the NT1.
Note
Point to multipoint support is permitted only when no bus loop power is consumed by any endpoint on
the bus. The HWIC-4B-S/T does not consume S-bus loop power.
the bus. The HWIC-4B-S/T does not consume S-bus loop power.
Step 1
Connect one end of a straight-through RJ-45-to-RJ-45 cable to the RJ-45 port on the HWIC-4B-S/T.
Step 2
Connect the other end of the RJ-45 cable to up to 7 other Traffic Engineering (TE) interfaces and external
terminating resistor.
terminating resistor.
Figure 3
Connecting Point to Multipoint
Upgrading ISDN BRI Network Modules
To upgrade your existing HWIC-4B-S/T on the Cisco 2800 or Cisco 3800 ISRs, see the replacement
HWICs listed in
HWICs listed in
.
1
NT1 device
4
Multi-port splitter
2
ISDN BRI S/T port
5
External terminating resistor
3
Cable connecting to up to 7 other TE
interfaces
interfaces
231043
HWIC
4B-S/T
4B-S/T
SEE
MANUAL
BEFORE
INSTALL
INSTALL
BRI 0
B1
B2
BRI 1
B1
B2
BRI 2
B1
B2
BRI 3
B1
B2
2
1
5
3
4