- One ISDN BRI port (U interface, internal NT-1)
- RJ−45 connector
- Supported on Cisco 1700, 2600, 3600, 3700 series routers
- Does not support hot swap, however no hardware damage occurs if it is swapped while power is on
- Supported in NM-1FE1R2W, NM-1FE2W, NM-2FE2W, and NM-2W
The WIC-1B-U-V2 offers a single ISDN BRI U interface including an internal NT−1. The WIC inserts into a mixed−media network module or directly into the WIC slot on the Cisco 1700, 2600, 3600 or 3700 chassis.
The ability to add BRI connectivity via a WIC lets administrators maximize valuable slot space while it provides additional connectivity options, such as Ethernet, on the same module.