Cisco HWIC-4T1/E1 — 4-Port T1/E1 WAN Interface Card

Upgrade your branch office WAN connectivity with the Cisco HWIC-4T1/E1, a 4-port clear channel T1/E1 high-speed WAN interface card with integrated CSU/DSU. Fully refurbished, rigorously tested, and backed by Reef Telecom's industry-leading 10-year warranty — far exceeding the typical 90-day coverage offered by competitors.

Key Specifications

• Part Number: HWIC-4T1/E1
• Ports: 4 x RJ-48C T1/E1 WAN interfaces
• Integrated CSU/DSU: Eliminates external termination equipment
• Software-Configurable: Switch between T1 and E1 modes via Cisco IOS
• Form Factor: Singlewide HWIC plug-in module
• Data Link Protocol: Multilink PPP, Frame Relay (FRF.16)
• Standards: G.703, G.704 compliant for balanced and unbalanced E1
• Dimensions: 0.75 x 3.08 x 4.74 in (1.91 x 7.82 x 12.04 cm)
• LEDs: Carrier detect, alarm per port

Platform Compatibility

Designed for Cisco Integrated Services Routers including the 2800, 2900, 3800, and 3900 Series. Ideal for n x T1/E1 WAN aggregation, branch office bandwidth scaling, and consolidating multiple single-port HWICs into one singlewide module — freeing up slots for additional services.

Free shipping on orders over $300. Questions? Contact Reef Telecom for expert support on enterprise networking equipment.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.