WIC‑1B‑U‑V2 Specifications
Cisco 1‑Port ISDN BRI (U Interface) WAN Interface Card — Version 2
Manufacturer: Cisco
Model: WIC‑1B‑U‑V2
Product Line: WAN Interface Cards (WIC)
Product Series: ISDN BRI U
Product Type: Interface Card
Product Name: Cisco 1‑Port ISDN BRI U (with NT‑1)
KEY FEATURES:
1 single ISDN BRI port (U interface)
Integrated NT‑1 (Network Terminator) — no external NT‑1 needed
Connector: RJ-45
Supports both voice and data over ISDN BRI
Allows dial-on-demand routing and ISDN dial-up
PERFORMANCE / CAPACITY:
Channels: 2 B‑channels (each 64 kbps) + 1 D‑channel (16 kbps)
Maximum data rate: ~128 kbps (when both B-channels are bonded)
Supported protocols: PPP, HDLC, Frame Relay, X.25, LAPB
COMPATIBILITY & SOFTWARE:
Compatible platforms: Cisco 1700, 1800, 2600 / 2600XM, 2800, 3600 series, 3800, etc.
Supported IOS versions: e.g., 12.1(18), 12.2(13), 12.3(8)T4 and others
ENVIRONMENTAL & RELIABILITY:
Operating temperature: 0 °C to 40 °C
Storage temperature: –25 °C to 70 °C
Humidity: 5% to 95% (non-condensing)
PHYSICAL:
Dimensions: approx 3.1 in (W) × 4.4 in (D) × 0.8 in (H)
Weight: ~112.8 oz (~3.2 kg)
PLATFORMS / USE CASE:
Designed for modular routers (WIC slot)
Can also be used via mixed‑media network modules (NM) in supported routers
Ideal for remote office / branch-office ISDN connectivity

Reviews
There are no reviews yet.