ROF1575130/3 Ericsson MD110 PBX Expansion Card

The Ericsson ROF1575130/3 is an ELU-D3(8) Extension Line Unit board in sub-equipped configuration. This telecom system card provides digital extension line interfaces for connecting digital telephone terminals to the Ericsson MD110 private branch exchange system.

The ELU-D3 board is designed for the MD110 PBX platform, supporting up to 8 digital extension ports in this sub-equipped variant. It enables connection of Ericsson digital telephones and similar endpoint devices, forming part of the magazine-based architecture of the MD110 system.

The Ericsson MD110 is a legacy PBX platform that was widely deployed in enterprise environments. While discontinued, many installations remain in active service, creating ongoing demand for replacement boards and expansion cards to maintain and extend existing systems.

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