Allied Telesis AT-DMC1000/LC-90 – Gigabit Fiber Media Converter LC TAA

Product Overview

The Allied Telesis AT-DMC1000/LC-90 is an Allied Telesis 1000T to fiber media converter LC model, providing Gigabit Ethernet conversion between 1000Base-T copper (RJ-45) and 1000Base-SX multimode fiber (LC connector) in a compact desktop form factor. TAA compliant for U.S. federal procurement, this converter is suited for enterprise network fiber extension, data center server-to-switch fiber connections, and building-to-building Gigabit fiber links where existing copper cabling reaches its 100m distance limit. The DMC series is among the smallest media converters available and can be optionally wall-mounted using the AT-DMCWLMT bracket (sold separately), enabling flexible deployment in wiring closets, server rooms, and remote edge locations.

Product Description

The AT-DMC1000/LC-90 converts Gigabit Ethernet 1000Base-T copper signals to 1000Base-SX multimode fiber using an LC duplex connector, enabling network engineers to extend Gigabit connectivity beyond the 100-meter copper limit over existing or new multimode fiber infrastructure. The DMC series is designed to be among the smallest, most energy-efficient media converters in the market, contributing to reduced rack footprint and lower power consumption in high-density deployments. Auto-negotiation on the copper port handles speed and duplex detection automatically, while Auto MDI/MDI-X eliminates the need for crossover cables. The Smart MissingLink (SML) feature propagates link failures across both the copper and fiber segments, ensuring that a fiber link loss is reflected as a copper link-down on the far-end device — a critical capability for switch-based fault detection in enterprise environments. Smart Link Restoration automatically re-establishes connectivity after power cycles or link interruptions without requiring manual intervention or device resets. The converter passes IEEE 802.1Q VLAN-tagged frames transparently, maintaining compatibility with VLAN-segmented enterprise switching infrastructure. A built-in link test capability allows technicians to verify connectivity between the converter ports and connected end nodes, accelerating troubleshooting without specialized test equipment. The unit is powered by an included AC adapter and is optionally wall-mountable via the AT-DMCWLMT bracket, sold separately.

Key Features

• 1000Base-T to 1000Base-SX/LC Conversion — Converts Gigabit Ethernet copper to multimode fiber with LC duplex connector.
• TAA Compliant — Meets Trade Agreements Act requirements for U.S. federal and government procurement.
• Auto-Negotiation — Automatically negotiates speed and duplex on the copper RJ-45 port.
• Auto MDI/MDI-X — Eliminates crossover cable requirements on the copper port.
• Smart MissingLink (SML) — Propagates link failures end-to-end for fast network fault detection and isolation.
• Smart Link Restoration — Automatically restores links after power failures or link interruptions without manual resets.
• IEEE 802.1Q Transparent — Passes VLAN-tagged frames without modification, compatible with enterprise VLAN architectures.
• Link Test — Built-in port link test for quick connectivity verification and troubleshooting.
• Compact Desktop Form Factor — Small footprint suitable for desk, shelf, or optional wall-mount deployment.
• Wall-Mountable — Compatible with AT-DMCWLMT wall-mount bracket (sold separately).
• RoHS Compliant — Meets environmental compliance requirements for EU and international markets.

Typical Applications

• Enterprise Gigabit fiber extension beyond 100m copper distance limits
• Data center server-to-switch fiber uplink conversion
• Building-to-building Gigabit fiber interconnect
• Wiring closet copper-to-fiber media conversion at network edge
• U.S. federal and government network deployments requiring TAA-compliant hardware
• Campus network fiber extension from IDF to access layer

Technical Specifications

Frequently Asked Questions

Q: What fiber type and connector does the AT-DMC1000/LC-90 use?

The AT-DMC1000/LC-90 uses a duplex LC connector for 1000Base-SX multimode fiber. It is compatible with standard OM1 (62.5/125 µm) and OM2 (50/125 µm) multimode fiber patch cables.

Q: What is the maximum fiber distance supported?

The 1000Base-SX standard supports up to 550 meters over 50/125 µm OM2 multimode fiber and up to 275 meters over 62.5/125 µm OM1 fiber at 850 nm wavelength.

Q: Is the AT-DMC1000/LC-90 TAA compliant?

Yes. The -90 suffix indicates TAA compliance, making this converter eligible for U.S. federal government procurement on GSA schedules and other government contracts.

Q: Does this converter support VLAN-tagged traffic?

Yes. The AT-DMC1000/LC-90 passes IEEE 802.1Q VLAN-tagged frames transparently without stripping or modifying VLAN tags.

Q: What happens if the fiber link goes down?

The Smart MissingLink (SML) feature propagates the fiber link failure to the copper port, causing a link-down event visible to the connected switch or server, enabling standard network fault detection to alert operations teams.

Q: Can this unit be wall-mounted?

Yes. The AT-DMC1000/LC-90 is compatible with the AT-DMCWLMT wall-mount bracket, sold separately, enabling installation in wiring closets or on walls where desktop placement is not practical.

Q: Where can I order the AT-DMC1000/LC-90?

The AT-DMC1000/LC-90 is available from Creation Networks at creationnetworks.net.