User's Manual

Gigabit “twister” and SONET “twister” 5
Overview
The Metrobility “twister” provides seamless integration between fiber optic
multimode and singlemode segments in Gigabit Ethernet, OC-3/STM-1 or OC-12/
STM-4 environments. It supports copper to fiber translation as well as wavelength
conversion from 850nm to 1310 or 1550nm, and from 1310nm to 1550nm. With the
“twister”, you can increase your network reach up to 70km on a single segment. For
networks that require extended distance support, use the 2152-series repeaters. The
repeaters recover incoming data and regenerate the signal, thus allowing multiple
hops over any distance.
The Gigabit “twister” and SONET “twister” offer the following key features:
• A Link Loss Return (LLR) switch on each fiber optic port to aid in
troubleshooting remote network connections.
• Link Loss Carry Forward (LLCF) functionality on the fiber-to-fiber
units or Copper Loss Carry Forward (CLCF) on the copper-to-fiber
models. LLCF and CLCF work with LLR in diagnosing network
connections.
• Signal recovery that restores data integrity, enabling repetition over
unlimited distances. (2152-series only)
• Auto-sensing copper port that eliminates the need for crossover cables.
• Full-duplex support.
• Gigabit Ethernet (1Gbps), OC-3/STM-1 (155Mbps) or OC-12/STM-4
(622Mbps) support.
• A link LED on each port to indicate that the port is receiving idle link
signals or a satisfactory level of light.
• IEEE 802.3 Sec. 14 / IEEE 802.3z compliance (Gigabit “twister” only).
• Universal desktop power supply (100-240V / 50-60Hz).
• Data transmission over singlemode fiber up to 70km.
*
• Numerous connectivity options, including bidirectional wavelength
division multiplexed (BWDM) fiber.
*Actual distance should be calculated based on the actual link loss budget.