Metrobility Redundant Twister - Redundant switch - 100Base-FX, 100Base-TX - RJ-45 - ST single mode - external - up to 12 miles

Metrobility`s "redundant twister" interface provides redundant data paths for path protection and restoration. An essential connectivity tool for high priority and mission-critical applications, it provides fully redundant data paths as well as power supply redundancy, for Ethernet or Fast Ethernet devices. If the primary connection fails due to a cable or hardware failure, the "redundant twister" interface switches the device`s traffic to the secondary connections within 200 microseconds. Intelligent "redundant twister" models also deliver Managed Network-on-Demand capability for mission-critical applications. Managed Network-on-Demand allows the "redundant twister" media converter to be configured to operate in either Dynamic Recovery Mode (DRM) to ensure session integrity and increase uptime, or in Network Select Mode (NSM) to redirect traffic and add security through link isolation. And with SONAR, or Switch on No Activity Received, the interface not only monitors for loss of link on the active port, but will also monitor for traffic. With SONAR, if the active port remains idle for a given amount of time (configurable for 2-4 seconds) the resilient technology of the redundant interface will verify activity on the secondary port, and switch traffic to that port once traffic is detected. This prevents a switch or switch port failure from bringing down the network or any part of it.