ROF1375334/3 Ericsson Ericsson MD110 PBX Expansion Card

The Ericsson ROF1375334/3 is an ELU 28 Extension Line Unit providing 16 analogue extension ports for connection of standard analogue telephones and devices. This board serves as a critical interface component within Ericsson’s telecommunications infrastructure, enabling the expansion of analogue endpoint capacity.

The ELU 28 is designed for deployment within the Ericsson MD110 and BusinessPhone PBX platforms. It allows system administrators to scale their analogue extension capacity in 16-port increments, supporting traditional analogue handsets, fax machines, and modems across enterprise telephone installations.

This is a legacy product associated with the Ericsson MD110 platform, which has been discontinued following Ericsson’s exit from the enterprise PBX market. However, the ELU 28 remains essential for maintaining and expanding existing MD110 installations that continue to operate in many enterprise environments worldwide.

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