Synchronous Digital Hierarchy Signal Converter is optical range of products multiplexes with basic 2Mbps streams into 8/34/140 Mbps. The Signal Converter has multiplexed aggregate signal which is converted into an optical signal at 1310 nm to be transmitted through a single mode optical fibre cable. The Signal Converter has equipment configuration that permits availability of stand- alone electrical multiplexers, optical line terminal equipments or regenerators. Synchronous Digital Hierarchy Signal Converter finds application in telecommunication industries and other service providers.