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HWIC-4T
4-Port Serial HWIC Cisco Router High-Speed WAN Interface car...
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HWIC-4T is a high-speed WAN interface card designed for robust T1/E1 connectivity in Cisco routers. It provides four independent T1/E1 ports with data rates of up to 1.544 Mbps on T1 lines and 2.048 Mbps on E1 circuits, using RJ-48 connectors for reliable transmission. This module is engineered to accommodate standard TDM protocols, ensuring seamless integration into existing network infrastructures.
HWIC-4T offers a compact, plug-and-play form factor that fits into HWIC/EHWIC slots, making it ideal for upgrading router WAN capabilities in enterprise and carrier environments. Its targeted use cases include expanding voice and data network capacity, enhancing connectivity in remote sites, and offering high-availability solutions in critical network applications.
HWIC-4T price is $417.00, a 87.7% saving from the Cisco list price of $3,400.00. HWIC-4T is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for HWIC-4T for additional pricing. Browse the full Router Ehwic Wan Cards series or explore all Cisco products.
In a retail franchise environment, four remote stores connect to headquarters over dedicated 8 Mbps serial links using the Cisco HWIC-4T-4-Port Serial High-Speed WAN Interface Card. This setup delivers simultaneous POS transactions, real-time inventory synchronization and VoIP over a single router, reducing latency, simplifying management and ensuring consistent customer service.
A manufacturing plant deploys the Cisco HWIC-4T-4-Port Serial HWIC to link four production-line SCADA segments to the central control center with isolated 8 Mbps WAN circuits. This architecture enforces network segmentation, guarantees deterministic performance for critical PLC traffic and meets industry safety and compliance standards.
An enterprise data center uses the HWIC-4T-4-Port Serial High-Speed WAN Interface Card to aggregate four 8 Mbps T1/E1 links, delivering 32 Mbps of resilient WAN capacity for off-site backup and database replication. The result is sub-15 minute RPO, automated failover and cost-effective utilization of existing serial infrastructure.
To get the detailed certification, please go to the Compliance Center.
| HWIC-4T |  HWIC-CABLE-E/J-2 |  HWIC-1CE1T1-PRI |  HWIC-AP-G-J |  EHWIC-3G-HSPA-U | |
|---|---|---|---|---|---|
| Product Type | Network Module | Network Module / Network Card | WAN Module | Wireless Access Point Module | WAN Module |
| Module Type | High-Speed WAN Interface Card | Ethernet | T1/E1 PRI | Wi-Fi | 3G HSPA |
| Data Rate | T1/E1 (1.544 Mbps / 2.048 Mbps) | 1Gbps | 1.544Mbps / 2.048Mbps | 1G | Up to 7.2Mbps |
| Connector Type | RJ-48 | RJ-45 | RJ-48 | RJ-45 | EHWIC Slot |
| Supported Protocols | TDM | TCP/IP | T1/E1, PRI | TCP/IP | TCP/IP |
| Form Factor | HWIC/EHWIC | Modular | HWIC | 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 | N/A | 3.3V | 3.3V |
| Compatibility | Cisco Routers | Cisco | Cisco ISR Routers | Cisco | Cisco ISR Routers |
| Max Speed | 2.048 Mbps per port | 1Gbps | 1.544Mbps / 2.048Mbps | 1Gbps | 7.2Mbps |
| Supported Features | Auto-sensing, Loopback, Diagnostics | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Channelized operation, T1/E1 framing, timing recovery | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Roaming, Auto-detection, SMS support |
| Power Consumption | 10W | 2.5W | N/A | 5W | N/A |
| Interface Ports | 4 x T1/E1 | Ethernet | T1/E1 | Ethernet / Wireless | Cellular |
| Expansion Slots | HWIC | EHWIC | HWIC slot | EHWIC | EHWIC |
| Product Name | HWIC-4T | HWIC-CABLE-E/J-2 | HWIC-1CE1T1-PRI | HWIC-AP-G-J Wireless Access Point Module | Cisco EHWIC-3G-HSPA-U |
| Height | N/A | N/A | N/A | 0.5 inches | N/A |
| Width | N/A | N/A | N/A | 3.5 inches | N/A |
| Depth | N/A | N/A | N/A | 5.5 inches | N/A |
| Weight | N/A | N/A | N/A | 1.2 lbs | N/A |
The HWIC-4T provides reliable T1/E1 connectivity. It's perfect for scaling our network and providing consistent service to remote offices.
We use the HWIC-4T for four T1 connections. It delivers solid, uninterrupted service and is easy to configure.
The HWIC-4T is a reliable card for our T1 setup. It has improved our network's stability and is very easy to use.
The HWIC-4T provides great reliability and high-speed connectivity. It integrates smoothly with our Cisco router for excellent performance.
We've had no issues with the HWIC-4T. It's a great choice for expanding our T1 connections and ensuring reliable service.
The Cisco HWIC-4T is a 4-port serial High-Speed WAN Interface Card for compatible Cisco routers, offering up to 8 Mbps per port.
Each HWIC-4T port delivers up to 8 Mbps full-duplex serial connectivity for high-performance WAN links.
The HWIC-4T is supported on Cisco ISR platforms with HWIC slots, including 1841, 2801–2811, 2821, 2851, 2900 and 3900 series routers.
Power down the router, insert the HWIC-4T into an available HWIC slot, secure the module with screws, then power on and verify with show hw-module.
No, the HWIC-4T requires the router to be powered down before insertion or removal to avoid hardware damage.
The HWIC-4T uses standard RJ-48C connectors and requires Cisco smart serial or compatible CSU/DSU cables for T1/E1 services.
Yes, you can populate different HWIC slots with the HWIC-4T and other cards, subject to your router’s aggregate bandwidth and slot limits.
In global configuration mode, enter interface serial [slot/port], set encapsulation (HDLC or PPP), assign clock rate and IP address.
The HWIC-4T is supported in Cisco IOS 12.4 and later Universal images for ISR platforms.
The HWIC-4T consumes approximately 2.75 Watts; ensure your router’s power budget can accommodate additional modules.
Yes, the HWIC-4T supports T1 (1.544 Mbps) and E1 (2.048 Mbps) serial services over standard RJ-48C interfaces.
By providing four independent 8 Mbps ports, the HWIC-4T increases WAN throughput, reduces latency and enhances link redundancy.
Cisco offers a limited lifetime hardware warranty for the HWIC-4T, with optional SMARTnet service for extended support and rapid replacement.
You can buy genuine HWIC-4T modules from Cisco’s Online Store, authorized Cisco resellers and certified channel partners.
Use show diag and show hw-module slot [slot] in EXEC mode to confirm the HWIC-4T operational status and firmware version.
Most ISR routers support up to two HWIC modules; refer to your platform’s datasheet for exact slot and bandwidth limitations.
The HWIC-4T is certified for interoperability with RFC-compliant serial CSU/DSUs; third-party compatibility beyond industry standards may require testing.