Cisco 1605-R How To Use Manual page 58

1-Port ISDN BRI Cards
Figure 3-9
Connecting ISDN BRI Cards
Note
and provide a single BRI interface. The newer BRI WAN interface cards can mount in
either slot of a two-slot module.
3-10 Cisco WAN Interface Cards Hardware Installation Guide
Termination Jumpers on the Older BRI S/T WAN Interface Card
Termination jumpers
The older BRI WAN interface cards mount only in the W1 slot of a two-slot module
A
No termination
B
J1
J2
100 Ohms termination
J1
J2
J1
J2