BLACK BOX 

MT660A-MM Black Box FlexPoint T1/E1 to Fiber Converter

Mfg Part Number:  MT660A-MM  
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Price: $806.05 + Free Shipping
Quantity:
In Stock/Mfg Direct Ship
Last Updated: Aug 25, 2026
No Sales Tax except these states
, PO and Wire.

Improve the reliability and reach of business-critical T1 and E1 communications by extending copper circuits over multimode fiber. These managed media converters help organizations overcome the distance limitations and interference challenges associated with traditional copper infrastructure while maintaining dependable voice, data, and legacy communications services.

Designed for enterprise networks, public sector organizations, transportation systems, utilities, healthcare facilities, and campus environments, these converters transport T1/E1 traffic over multimode fiber for distances up to 5 km. By replacing vulnerable copper segments with fiber, organizations can increase network stability, reduce the impact of electromagnetic interference, and strengthen communications between buildings, network closets, remote departments, and distributed campus locations.

Integrated management capabilities provide greater network visibility, allowing administrators to monitor connections, identify issues more quickly, and improve operational efficiency. Available with either SC or ST fiber connectivity, these converters offer deployment flexibility while preserving existing T1/E1 infrastructure investments.

Whether supporting PBX systems, legacy WAN services, remote communications links, or mission-critical operational networks, these managed media converters provide a practical way to extend service life, improve uptime, and create a more resilient communications infrastructure without requiring costly network redesigns.

Main Specification
General Information
Manufacturer Black Box Corporation
Manufacturer Part Number MT660A-MM
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Line FlexPoint
Product Name Managed T1/E1 Media Converter - T1/E1 Copper to Multimode Fiber, 1300nm, 5km, ST
Product Type Transceiver/Media Converter
Interfaces/Ports
Total Number of Ports 2
Number of ST Ports 1
ST Port Type Duplex
Number of RJ-48 Ports 1
Media & Performance
Media Type Supported Optical Fiber
Fiber Mode Supported Multi-mode
Fiber Optic Cable Wavelength 1300 nm
Maximum Distance Supported 5 km
Fiber Optic Cable Core/Cladding Specification 62.5/125 µm
Fiber Optic Cable Core/Cladding Specification 100/140 µm
Fiber Optic Cable Core/Cladding Specification 50/125 µm
Network & Communication
Network Technology T1/E1
Power Description
Power Source Power Supply
Physical Characteristics
Form Factor Chassis Mount
Form Factor Wall Mountable
Form Factor Rack-mountable
Form Factor External
Height 1"
Width 3"
Depth 4"
Weight (Approximate) 6.40 oz
Miscellaneous
Package Contents
  • FlexPoint T1/E1 to Fiber Converter
  • AC Power Supply
Additional Information

Features:

  • Easy to install
  • Extensive diagnostics, including local and remote fiber loopback switches
  • LEDs display T1/E1 link status, modes of operation, and line segment errors
Compatibility
  • Gb ETH Mode CONV 1000Mb MM/1000Mb SM 850/1300nm 0.3km/5km (2) SC
  • Gb ETH MED CONV 1000-Mbps COP to 1000-Mbps MM FBR 850nm 0.3km SC
  • Rackmount Kit - Modular Media 5-Position
  • Wallmount Kit - FlexPoint Media Converters
  • DIN Rail Mounting Kit - FlexPoint Media Converter
  • ETH MED CONV 10-Mbps Copper to 10-Mbps ThinNet
  • Media Converter Kit - 10BASE2 Coax to 10BASE-FL
  • ETH MED CONV 10-Mbps Copper to 10-Mbps MM FBR 850nm 2km ST
Country of Origin United States
TAA Compliant Yes
Warranty
Limited Warranty 2 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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