
Safe checkout
Secure payments
Fast dispatch
1–2 day handling
Free shipping
U.S. ground
Warranty & RMA
Support after delivery
3Com 0231A56D 4 x Ports E1 IMA Multi-function Interface Module
- Interface Type: E1
- Number of Ports: 4
- Protocol Support: IMA (Inverse Multiplexing over ATM)
- Function: High-speed data aggregation
- Designed for WAN connectivity
- Compatible with 3Com networking equipment
0231A56D isn't on our shelf today — we source it to order. Request a quote and we'll confirm price and lead time within one business day.
Key specifications
See full specs ↓- Product Type
- Interface Module
- Number of Ports
- 4
- Interface
- E1
- Protocol
- IMA (Inverse Multiplexing over ATM)
- Brand
- 3Com
- Part Number
- 0231A56D
Product details
The 3Com 0231A56D is a Multi-function Interface Module featuring 4 x Ports E1 with IMA (Inverse Multiplexing over ATM) support. It is designed to provide high-speed data connectivity over multiple E1 circuits.
Technical Information
| Product Type | Interface Module |
| Number of Ports | 4 |
| Interface | E1 |
Additional Specifications
| Protocol | IMA (Inverse Multiplexing over ATM) |
| Brand | 3Com |
| Part Number | 0231A56D |
Description
The 3Com 0231A56D is a specialized interface module designed to enhance Wide Area Network (WAN) connectivity for compatible 3Com networking devices. This module is equipped with four E1 ports, each capable of supporting the E1 digital transmission standard, which is commonly used in Europe, Asia, and other parts of the world for telecommunications. The inclusion of Inverse Multiplexing over ATM (IMA) protocol support allows for the aggregation of multiple E1 links to create a single, higher-bandwidth logical connection. This aggregation capability is crucial for organizations that require robust and high-speed data transmission over their WAN links. By combining the bandwidth of several E1 circuits, the 0231A56D module enables more efficient use of leased lines and provides increased throughput for demanding applications such as voice over IP (VoIP), video conferencing, and large file transfers. The module's design focuses on reliability and performance, ensuring stable data flow across the aggregated links. The 3Com 0231A56D module is typically installed in a chassis-based 3Com switch or router, expanding its connectivity options and enabling it to interface with the telecommunications infrastructure. Its multi-functionality lies in its ability to provide both physical E1 connectivity and the intelligent aggregation of these links through the IMA protocol, offering a flexible and cost-effective solution for high-capacity WAN deployments.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for 0231A56D.





