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WIC-1DSU-56K4
1-port 4-WIRE 56/64 KBPS WAN INTERFACE CARD
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WIC-1DSU-56K4 is a dedicated DSU/CSU WAN interface card designed to deliver reliable 56Kbps connectivity for remote and branch office applications. Built in a compact WIC form factor, this module installs directly into compatible Cisco routers to provide seamless DSU functionality for analog WAN access.
Engineered to support industry-standard protocols such as PPP and HDLC, the card features an RJ-11 connector that ensures straightforward integration with traditional analog lines. Its robust design and focused functionality make WIC-1DSU-56K4 an ideal solution for upgrading legacy WAN infrastructures while maintaining dependable network performance.
WIC-1DSU-56K4 price is $310.00, a 55.7% saving from the Cisco list price of $700.00. WIC-1DSU-56K4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WIC-1DSU-56K4 for additional pricing. Browse the full Router Wic Wan Cards series or explore all Cisco products.
A regional bank deploys the Cisco WIC-1DSU-56K4-1-port 4-WIRE 56/64 KBPS WAN Interface Card on its branch router to leverage a 4-wire 56 kbps leased line where broadband is unavailable. By provisioning a dedicated DSU/CSU circuit, the branch achieves consistent transaction throughput, deterministic latency and carrier-grade reliability. Benefit: SLA-compliant uptime, predictable performance for core banking applications and reduced TCO compared to satellite or MPLS alternatives.
An oil & gas operator integrates the Cisco WIC-1DSU-56K4-1-port 4-WIRE 56/64 KBPS WAN Interface Card into its SCADA master router to connect offshore pump stations via existing 4-wire 64 kbps circuits. This configuration delivers real-time telemetry, alarm notifications and remote configuration over a secure, low-latency channel. Benefit: 24/7 operational visibility, 30 % reduction in field service visits and deterministic data delivery for critical infrastructure control.
A retail chain leverages the Cisco WIC-1DSU-56K4-1-port 4-WIRE 56/64 KBPS WAN Interface Card to connect store POS terminals to a central payment gateway via a leased 56 kbps line. The dedicated DSU/CSU link ensures 99.99 % transaction reliability, PCI-DSS compliant encryption tunneling and isolated connectivity. Benefit: uninterrupted credit-card processing, fortified data integrity and a 20 % reduction in per-store communication expenses.
To get the detailed certification, please go to the Compliance Center.
 WIC-1DSU-56K4 |  WIC-1AM-V2 |  WIC-1SHDSL-V3 |  WIC-BLANK-PANEL |  WIC-1ADSL | |
|---|---|---|---|---|---|
| Product Type | WAN Interface Card | WAN Module | WAN Module | Blank Panel | Network Module / Network Card |
| Module Type | DSU/CSU Module | WAN | WAN | WIC Blank Panel | WAN Module |
| Data Rate | 56Kbps | 1Gbps | 2Mbps | N/A | Downstream: 8 Mbps, Upstream: 1 Mbps |
| Connector Type | RJ-11 | RJ-45 | RJ-45 | N/A | RJ-11 |
| Supported Protocols | PPP / HDLC | TCP/IP, iSCSI | PPP, HDLC | N/A | TCP/IP, ADSL |
| Form Factor | WIC | PCIe | Modular | Modular | Modular |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 5V | 3.3V | 3.3V | N/A | 3.3V |
| Compatibility | Cisco | Cisco, Juniper, Arista, Dell, HP | Cisco | Cisco Routers / Cisco Switches | Cisco |
| Max Speed | 56Kbps | 1Gbps | 2Mbps | N/A | N/A |
| Supported Features | DSU/CSU functionality | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation | Slot Filling, Airflow Management | N/A |
| Power Consumption | N/A | 5W | N/A | N/A | N/A |
| Interface Ports | Analog RJ-11 | Ethernet | RJ-45 | N/A | RJ-11 |
| Expansion Slots | WIC Slot | N/A | N/A | N/A | WIC |
| Product Name | Cisco WIC-1DSU-56K4 | WIC-1AM-V2 | Cisco WIC-1SHDSL-V3 | WIC-BLANK-PANEL | WIC-1ADSL |
| Height | N/A | 1.0 inches | N/A | N/A | N/A |
| Width | N/A | 3.5 inches | N/A | N/A | N/A |
| Depth | N/A | 0.5 inches | N/A | N/A | N/A |
| Weight | N/A | 0.5 lbs | N/A | N/A | N/A |
The WIC-1DSU-56K4 module is a great solution for our network. It supports reliable 56K DSU connections and improves the performance of our communication system.
This module provides excellent value. The WIC-1DSU-56K4 ensures reliable data transfer for 56K DSU connections, making it a great addition to our infrastructure.
The WIC-1DSU-56K4 works seamlessly. It supports stable 56K DSU connections and integrates well into our network, providing reliable communication.
The WIC-1DSU-56K4 is reliable and easy to install. It ensures stable 56K DSU connections and has improved our network's performance.
The WIC-1DSU-56K4 module provides excellent performance. It supports reliable 56K DSU connections, improving the efficiency and stability of our system.
The WIC-1DSU-56K4 is a Cisco WAN interface card providing a single 4-wire DSU/CSU port supporting 56 kbps and 64 kbps synchronous links for Cisco routers.
It supports clear-channel synchronous data rates of 56 kbps and 64 kbps over four-wire circuits.
It is compatible with Cisco 2500, 2600, 3600 and 3700 series routers that provide a WAN Interface Card slot.
Power off the router, insert the card into an available WIC slot, secure it with the captive screw, power on the router, and configure via IOS.