Are there alternative products for the HWIC-4T1/E1?

Alternatives include other Cisco WAN interface cards like the HWIC-1GE-SFP for different network needs.

Does the HWIC-4T1/E1 need to be upgraded?

The HWIC-4T1/E1 does not typically require upgrades but ensure your router firmware supports it.

How to install the HWIC-4T1/E1 card?

You can install the HWIC-4T1/E1 by inserting it into an empty high-speed WAN interface card slot in the Cisco router.

What are the application scenarios for the HWIC-4T1/E1?

The HWIC-4T1/E1 is ideal for enterprise branch offices requiring multiple T1/E1 interfaces.

Is the HWIC-4T1/E1 cost-effective?

Yes, the HWIC-4T1/E1 is a cost-effective solution for expanding WAN capabilities in Cisco routers.

What is the main feature of the HWIC-4T1/E1 card?

The HWIC-4T1/E1 card offers 4 clear channel T1/E1 ports for high-speed data transfer.

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HWIC-4T1/E1, Cisco Router Interface Card, 4xT1/E1 ports/Clear channel/High-speed WAN

Name: HWIC-4T1/E1, Cisco Router Interface Card, 4xT1/E1 ports/Clear channel/High-speed WAN
Brand: Cisco
SKU: HWIC-4T1/E1
Price: 197 USD
Availability: OutOfStock
Rating: 4.7 (7 reviews)

Brand: Cisco
Model: HWIC-4T1/E1

Rating:

94%

4.7/5.0

7 Reviews

10 Questions

List Price: $4,200.00

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$197.00

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HWIC-4T1/E1, Cisco Router Interface Card, 4xT1/E1 ports/Clear channel/High-speed WAN

100% Genuine Ready to Ship

$4,200.00

95% OFF

$197.00

Overview

End-of-Life Notice

HWIC-4T1/E1 is officially EOL. Service support ends on 2022-12-31.

For full lifecycle details, see HWIC-4T1/E1 EOL.

Recommended Replacement

Official replacement model. Aligned with current deployment environments.

NIM-4MFT-T1/E1

Cisco HWIC-4T1/E1 Overview

The HWIC-4T1/E1 is a four-port, software-configurable clear-channel T1/E1 WAN interface card with RJ-48C connections for supported Cisco ISR platforms.

Key Specifications

WAN Ports

4 × T1/E1

Interface

RJ-48C

T1 Line Rate

1.544 Mbps per port

E1 Line Rate

2.048 Mbps per port

Configuration

Software-configurable clear-channel T1/E1

Best Fit Applications

T1/E1 clear-channel WAN

The documented 1.544/2.048 Mbps rates suit traditional dedicated WAN circuits.

Branch ISR WAN expansion

Four RJ-48C ports add multiple T1/E1 links to supported ISR platforms.

CSU/DSU-integrated WAN deployment

The confirmed CSU/DSU capability supports carrier-specific WAN planning.

Why HWIC-4T1/E1

Four-port WAN density

Four T1/E1 ports provide more circuit capacity than a two-port serial module.

Software-configurable T1/E1

The line type can be selected for the supported T1 or E1 deployment.

Traditional carrier connectivity

RJ-48C, clear-channel rates, and CSU/DSU support fit legacy WAN circuits.

Compare Related Models

	HWIC-4T1/E1	HWIC-2T
WAN Ports / Rate	4 × T1/E1 RJ-48C; 1.544/2.048Mbps; CSU/DSU	2-port serial WAN comparison; verify its own interface/protocol profile
Recommended Use	Multiple T1/E1 circuits on supported ISR platforms	Lower-density serial WAN expansion
Not Ideal For	Ethernet-only WAN or unsupported ISR hosts	Deployments requiring four T1/E1 ports

Connectivity Options

Type	Model / Part Number	Description
WAN interface	HWIC-4T1/E1	4 × RJ-48C ports for software-configurable clear-channel T1/E1.

System Compatible Components

Type	Model / Part Number	Description
Supported ISR platform	Cisco ISR platforms listed in the official data sheet	Confirm the exact router model and IOS release before installation.

Compatibility Check

Check Item	Confirmed Requirement	Selection Note
Host Platform	Supported Cisco ISR platform	Confirm the exact host is in the official support list.
IOS Release	2800/3800: minimum 12.4(20)T; 2911/2921/2951/3900: minimum 15.0(1)M	Match the minimum release to the actual platform family.
Line Type	Software-configurable clear-channel T1/E1	Confirm the carrier circuit and desired line type.
Interface / Wiring	RJ-48C; balanced or unbalanced E1 as applicable	Match the cabling and E1 electrical requirements.
CSU/DSU	Supported	Confirm the carrier-side CSU/DSU requirement.

Quality Certifications

Specification

Cisco HWIC-4T1/E1 Specification

Brand	Cisco
Model / Part Number	HWIC-4T1/E1
Product Type	4-Port Clear-Channel T1/E1 High-Speed WAN Interface Card
Ports	4
Configuration	Software-configurable between T1 or E1 operation
E1 Termination	Balanced or unbalanced
Integrated Function	CSU/DSU
Minimum IOS	12.4(20)T on 2821/2851/3800; 15.0(1)M on 2911/2921/2951/3900
Minimum Technology Package	IP Base
Maximum Modules	2 on 2821/2851; 1 on 2911; 2 on 2921/2951; 4 on 3825/3845/3925/3945; 3 on 3925E/3945E
Associated Cable	CAB-E1-RJ45BNC for unbalanced E1

Still unsure about your config? Talk to an engineer →

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Q&A

Questions & Answers

What are the product category details for HWIC-4T1/E1?

The HWIC-4T1/E1 belongs to Cisco Modules & Cards under the Router EHWIC WAN Cards category.

How does the HWIC-4T1/E1 compare to similar products?

The HWIC-4T1/E1 provides multiple ports at a competitive price, suitable for higher capacity requirements compared to single-port alternatives.

What accessories are available for the HWIC-4T1/E1?

Accessories for the HWIC-4T1/E1 include network cables and additional T1/E1 interface modules.

What common troubleshooting steps for HWIC-4T1/E1 issues?

Verify slot compatibility, check configurations, and ensure the card is properly seated in the router.

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