Allied Telesis AT 5000-02 CentreCOM 5000 Multimedia Concentrator 10BASE2 10BASE5

Allied Telesis AT 5000-02 CentreCOM 5000 Multimedia Concentrator 10BASE2 10BASE5

The Allied Telesis AT 5000-02 is a modular chassis unit from the CentreCOM 5000 Multimedia Concentrator series — a multi-slot Ethernet concentrator designed to support mixed coaxial Ethernet media types within a single enclosure. It accepts plug-in repeater modules that can be mixed and matched to interconnect 10BASE2 (thin coax) and 10BASE5 (thick coax / AUI) network segments. This unit is populated with four repeater modules across an eight-slot chassis.

Specifications & What's Included

• Manufacturer: Allied Telesis, Inc.
• Model: AT 5000-02 (CentreCOM 5000 Multimedia Concentrator)
• Chassis slots: 8 total (4 populated, 4 empty)
• Included Module 1: 2x Model 310 — 10BASE5 Repeater Module (AUI / DB15 connector)
• Included Module 2: 2x Model 320 — 10BASE2 Repeater Module (BNC / thin coax connector)
• Per-module indicators: ON LINE, ACT (activity), SQE/COL, AUTO/OFF LINE switch
• Model 320 modules include: 50-ohm termination switch (ON/OFF TERM)
• Power: 110V~ 2A, 50/60Hz
• Power connector: IEC C14 inlet with rocker power switch
• Form factor: Desktop / rackmount-compatible chassis
• Country of manufacture: U.S.A. (Allied Telesis Inc., Mountain View, CA)

Applications

The CentreCOM 5000 series was designed for early-to-mid 1990s Ethernet installations that needed to bridge or extend multiple coaxial Ethernet segments — specifically 10BASE2 (cheapernet / thin coax, 10 Mbps over RG-58) and 10BASE5 (thicknet / AUI, the original IEEE 802.3 standard) — from a single managed chassis. Concentrators like the AT 5000-02 served as the physical-layer hub in segmented LAN environments, repeating signals between coax segments to extend reach and aggregate multiple drops. Allied Telesis was a major supplier of Ethernet infrastructure equipment in this era, particularly in educational institutions, government offices, and corporate LANs that were still running coaxial Ethernet backbones before the widespread shift to structured UTP cabling and 10BASE-T hubs and switches in the mid-1990s. Today these units are primarily sought by collectors of vintage networking equipment, institutions maintaining legacy coax-based systems, and network historians. The modular chassis design allowed administrators to tailor the mix of 10BASE2 and 10BASE5 ports to the physical topology of each floor or building segment.