The US5Gm is a full-featured Timing Signal Generator (TSG) intended to supply timing distribution to network elements. It is designed to function as a Synchronization Supply Unit (SSU) / Building Integrated Timing Supply (BITS) or Synchronization Distribution Unit (SDU) for common clock distribution to all Network Elements (NE’s) requiring external timing for synchronization.

It has been designed to comply with all ITU-T recommendations, ETSI standards and Telcordia Generic Requirement (GR) network synchronization equipment standards and to the Regional Bell Operating Company (RBOC) network operations common practices. These include but are not limited to: : ITU-T G.811 (GPS ref.) , ITU-T G.812, ITU-T G.813, ETSI 300 462-3/4/5/6(GPS ref.), GR-1244-CORE, GR-378-CORE, GR-436-CORE, GR-474-CORE, GR-833-CORE, GR-1093-CORE, and GR-2830-CORE (GPS ref.). It can be equipped or configured to accept multiple timing reference signals of various formats and sources. It can accommodate up to 5 external timing references and allows them to be prioritized as the user desires.

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