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HP JF254B 4 x Ports T1 Fractional Multifunction Interface Module (MIM) Expansion Module
- Four T1 Fractional ports.
- RJ48 connectors (typical for T1/E1).
- Enables T1 leased line connectivity.
- Supports fractional T1 usage (portions of 1.544 Mbps).
- Multifunction Interface Module (MIM) expansion.
- Designed for specific HP networking platforms.
- Used for voice and data transmission.
- Provides flexible leased line bandwidth options.
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Product Overview
The HP JF254B is a Multifunction Interface Module (MIM) Expansion Module featuring four T1 Fractional ports. This module is designed to add T1 connectivity to compatible HP networking equipment, allowing for leased line connections that can utilize portions of the T1 bandwidth (1.544 Mbps) for voice or data.
Technical Information
| Product Type | Interface Module |
| Interface Type | T1 Fractional |
| Number of Ports | 4 |
| Bandwidth | Configurable (portion of 1.544 Mbps per port) |
Additional Specifications
| Connector Type | RJ48 (assumed) |
| Functionality | Leased Line Interface |
| Compatibility | Specific HP Platforms |
Product Description
The HP JF254B is a Multifunction Interface Module (MIM) that provides four ports for T1 Fractional connectivity. A T1 line is a standard digital transmission line used primarily in North America and Japan, offering a total bandwidth of 1.544 Mbps. Fractional T1 allows this bandwidth to be divided into smaller, usable channels, typically multiples of 56 Kbps or 64 Kbps, enabling organizations to lease only the required capacity for their voice and data needs, making it a more cost-effective solution than a full T1 line. This module is designed to be installed in compatible HP networking equipment, serving as an expansion unit to add T1 leased line capabilities. The four RJ48 connectors (the standard connector for T1/E1 interfaces) allow for multiple independent T1 connections or the aggregation of bandwidth across several ports, depending on the host system's capabilities. It is utilized for various applications, including connecting to the Public Switched Telephone Network (PSTN) for voice services, establishing dedicated data links, or implementing ISDN PRI connections. The JF254B module plays a role in providing flexible and scalable WAN connectivity options for businesses. By supporting fractional bandwidth, it allows for precise allocation of network resources, catering to fluctuating or lower-bandwidth requirements without the expense of a full T1 circuit. This makes it a valuable component for network designs that need to integrate with traditional leased line infrastructure.



