Three versions of the ISDN Basic Rate Interface (BRI) S/T WAN interface
card (WIC) are available: the WIC36-1B-S/T, WIC-1B-S/T and WIC-1B-S/T-LL. These
cards offer a single ISDN BRI S/T-interface. These WICs can require an external
NT-1 that depends on the region of the world. The WIC inserts into a
mixed-media network module or directly into the WIC slot on the Cisco 1600,
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.
Note: The WIC-1B-S/T-LL is for leased line BRIs.
These are the differences between the two:
The product number is printed on a label on the under side of the
The WIC36 has a keying tab on the left-hand side of the WIC.
The WIC-1B-S/T has an "OK" LED.
Use the Cisco IOS® show diag command in
order to see which WIC is in a network
The WIC BRI interface configuration is similar to any other BRI
interface. Once the WIC is inserted into the router it behaves just as any BRI
interface built into the router, for example, Cisco 800 and 1600 Series