DUBLIN, Ireland--(BUSINESS WIRE)--Research and Markets (http://www.researchandmarkets.com/reports/c44913) has announced the addition of E-Learning Course: SDH ...

The longevity of Plesiochronous Digital Hierarchy/Synchronous Digital Hierarchy (PDH/SDH) communications networks in the utility industry is remarkable. Used for decades to monitor and control the ...

Three high-speed, PECL/LVPECL multiplexers meet the ultra-low jitter and skew demands of Sonet/synchronous digital hierarchy (SDH) communications systems, high-end enterprise server applications, and ...