1/TSR9011219/3000 Ericsson Ericsson MD110 / BusinessPhone Telecom Module

The Ericsson 1/TSR9011219/3000 is a synchronisation ring cable designed to interconnect ELU 31 extension line units within Ericsson telecommunications systems. This cable facilitates the synchronisation signals between multiple ELU 31 modules, ensuring coherent timing across distributed telephony infrastructure.

The sync ring cable is an essential component in Ericsson MD110 and BusinessPhone PBX environments where multiple ELU 31 line interface units are deployed. Proper synchronisation between extension modules is critical for maintaining call quality and system stability in enterprise telephony installations.

This is a legacy component associated with Ericsson’s traditional PBX platforms, which have since been superseded by more modern IP-based solutions. However, many MD110 and BusinessPhone systems remain in active service, creating ongoing demand for replacement cables and connectivity components.

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