Ericsson 55000100 EMS server / OMS SDH transmission / Aastra Ericsson PBX Power Supply

The Ericsson 55000100 is a MCO1 power supply module for the MD Evolution XL system, one of the platform’s subrack power-supply cards. MD Evolution XL was Ericsson’s business communication system before Ericsson sold its enterprise PBX portfolio to Aastra Technologies in 2008; Aastra carried the platform forward and it was later developed into the MX-ONE system, so this generation of hardware still supports installations that have not yet migrated. MD Evolution XL equipment of this generation remains in active service across many established business telephony deployments, and genuine spares such as this one are a routine requirement for maintaining full system capacity, restoring redundancy after a component failure, or expanding an existing installation. Confirm the exact platform revision and slot configuration before ordering, as fit can vary across generations of the same family. Tech-Star (UK-based, shipped worldwide) supplies Ericsson MD Evolution XL hardware to keep existing installations running.