Allied Telesis AT-MMC2000/ST-960 – TAA Gigabit Multimode Media Converter ST

Product Overview

The Allied Telesis AT-MMC2000/ST-960 is a TAA-compliant Allied Telesis gigabit media converter ST multimode designed for enterprise and federal network deployments requiring copper-to-fiber media conversion with ST connector infrastructure. It converts 10/100/1000Base-T copper connections to 1000Base-SX multimode fiber over ST connectors, supporting fiber runs up to 500 m on 50/125 µm and 62.5/125 µm multimode cable. As a federal-compliant gigabit ST media converter, it qualifies for government procurement under GSA Schedule and TAA-governed contracts. The compact MMC Series form factor allows wall or rack mounting and operates from an included external AC power supply, making it deployable virtually anywhere on the network edge.

Product Description

The AT-MMC2000/ST-960 is part of the Allied Telesis MMC Series of mini media and rate converters, purpose-built to bridge copper gigabit Ethernet infrastructure to existing multimode fiber cabling with ST connectors. The ST fiber port operates on the 1000Base-SX standard at 850 nm wavelength, with maximum distances up to 1640 ft (500 m) depending on fiber grade. The RJ-45 copper port supports 10, 100, and 1000 Mbps operation with Auto-Negotiation and Auto MDI/MDIX, connecting to copper segments up to 100 meters. Operating in store-and-forward mode, the device handles IEEE 802.1Q VLAN-tagged traffic transparently and supports jumbo frames up to 10K bytes — ensuring full compatibility with modern enterprise backbone switches and storage networks. The Smart MissingLink (SML) feature monitors both ports and propagates link-down events across the copper-fiber boundary, enabling upstream switches and network management systems to detect failures on either side of the converter. Smart Link Restoration automatically re-establishes links following power loss or link interruption without requiring manual reset. Power consumption is only 1.7W, delivering over 50% energy savings compared to standard media converters. EEE (Energy Efficient Ethernet) support on the copper port further reduces power draw during idle periods. A 2K MAC address table provides Layer 2 forwarding intelligence for efficient traffic handling. The device mounts on a wall or rack-mount tray and is powered by the included AC adapter. TAA compliance and manufacture in Singapore make it appropriate for federal, defense, and civilian government network procurement under applicable acquisition regulations.

Key Features

• TAA Compliant — Meets Trade Agreements Act requirements for U.S. federal, defense, and government procurement under GSA Schedule.
• 1000Base-SX Multimode Fiber Port (ST) — Operates at 850 nm; supports ST-terminated 50/125 µm and 62.5/125 µm multimode fiber up to 500 m.
• 10/100/1000Base-T Copper Port (RJ-45) — Auto-negotiating with Auto MDI/MDIX, supporting up to 100 m of Cat5e or Cat6 cabling.
• Store-and-Forward Switching — Filters damaged frames and ensures error-free delivery across the copper-to-fiber boundary.
• IEEE 802.1Q VLAN Transparency — Passes VLAN-tagged frames transparently without stripping tags, compatible with all modern managed switches.
• 10K Jumbo Frame Support — Handles oversized frames for storage, virtualization, and high-throughput applications without fragmentation.
• Smart MissingLink (SML) — Propagates link failures across media segments so connected switches can trigger failover and alerting.
• Smart Link Restoration — Automatically restores link connectivity after power failure or interruption without manual intervention.
• 1.7W Ultra-Low Power Consumption — Over 50% power savings vs. conventional media converters; EEE support reduces idle power further.
• 2K MAC Address Table — Provides Layer 2 forwarding intelligence for proper unicast traffic handling.
• Wall and Rack Mountable — Compact form factor (0.9" H x 2.2" W x 4" D) with flexible mounting for IDF closets, wiring rooms, and edge deployments.
• Far End Fault Detection — Provides fiber link fault notification to the far-end device for faster troubleshooting.

Typical Applications

• Federal, defense, and government network modernization with TAA-compliant multimode fiber media converters
• Extending legacy ST-connector multimode fiber infrastructure to gigabit copper edge switches
• IDF wiring closet media conversion between copper access-layer switches and fiber backbone
• Small to mid-size enterprise campus deployments with existing ST-terminated multimode fiber runs
• Industrial and building automation networks requiring low-power, compact media conversion
• Broadcast and AV environments with established ST fiber infrastructure needing gigabit copper endpoints

Technical Specifications

Frequently Asked Questions

Q: Is the AT-MMC2000/ST-960 TAA compliant for federal purchasing?

Yes. The AT-MMC2000/ST-960 is fully TAA compliant, qualifying it for U.S. federal government procurement under GSA Schedule and other government contract vehicles requiring Buy American Act compliance.

Q: What fiber cable type does this media converter require?

The AT-MMC2000/ST-960 requires multimode fiber (MMF) with ST connectors. It supports both 50/125 µm and 62.5/125 µm fiber types operating at 850 nm wavelength.

Q: What is the maximum fiber distance?

The maximum fiber distance is approximately 1640 ft (500 m) on 50/125 µm multimode fiber. Distance on 62.5/125 µm fiber is typically shorter; consult the product datasheet for exact values per fiber grade.

Q: Does it support VLAN-tagged frames?

Yes. The MMC2000/ST-960 is fully transparent to IEEE 802.1Q VLAN-tagged frames and passes them without stripping tags, ensuring compatibility with all modern managed switches.

Q: What does Smart MissingLink do and why does it matter?

Smart MissingLink (SML) monitors both the copper and fiber ports. When a link on one side goes down, SML signals a link-down on the other side, enabling connected devices to detect the failure and initiate failover or network management alerts without requiring manual inspection.

Q: Is a power supply included?

Yes. The AT-MMC2000/ST-960 includes an AC power adapter in the box.

Q: How does this differ from the MMC2000LX/LC-960?

The AT-MMC2000/ST-960 uses ST connectors and operates over multimode fiber (850 nm, up to 500 m). The AT-MMC2000LX/LC-960 uses LC connectors and operates over singlemode fiber (1310 nm, up to 20 km). Choose based on your fiber type, connector standard, and required link distance.

Q: What mounting options are available?

The unit supports both wall mounting and rack mounting, and can also be used as a standalone desktop device. Its compact size (0.9" H x 2.2" W x 4" D) makes it easy to deploy in IDF closets and tight spaces.