Nortel 74021-32 Quad Port Token Ring FRE2-040 32MB Intelligent Link Interface (ILI)

Overview
The Nortel 74021-32 Quad Port Token Ring FRE2-040 32MB Intelligent Link Interface (ILI) is a high-performance networking module designed for legacy Token Ring environments that require reliable, high-speed data transmission. This compact ILI provides four independent ports, each capable of supporting 32 megabit Token Ring connections, making it an ideal upgrade for enterprises that still rely on Token Ring technology for critical applications.

Key Features

• Quad port configuration delivers up to four simultaneous Token Ring links
• Supports 32 megabit per second data rates for fast and efficient communication
• Intelligent Link Interface automatically monitors link health and optimizes traffic flow
• Plug-in design simplifies installation and reduces downtime
• Compatible with Nortel and other standard Token Ring network equipment
• Built-in error detection and correction to maintain data integrity

Technical Specifications

• Model/Part Number: 74021-32
• Manufacturer: Nortel
• Port Count: 4
• Maximum Data Rate: 32 megabits per second per port
• Interface Type: Token Ring (IEEE 802.5)
• Operating Temperature: 0 deg to 55 deg C
• Power Consumption: 5 watts typical
• Form Factor: 19 inch rack mountable, 1U height
• Connector Type: RJ45 style Token Ring connectors

Applications
The 74021-32 ILI is suited for a variety of legacy network scenarios, including:

• Corporate campuses that maintain Token Ring segments for specialized equipment
• Industrial control systems where Token Ring reliability is required
• Financial institutions with legacy transaction processing networks
• Research facilities that use Token Ring for low-latency data collection
• Network upgrades where a phased migration from Token Ring to Ethernet is planned

By integrating the Nortel Quad Port Token Ring ILI, organizations can extend the life of their existing Token Ring infrastructure while benefiting from modern monitoring and management capabilities.