Avaya TN793CP Definity/Communication Manager PBX Expansion Card

The Avaya TN793CP is an Analog Line circuit pack designed to provide analogue trunk or station connectivity within Avaya’s enterprise PBX platforms. This board enables the connection of traditional analogue devices such as fax machines, modems, and single-line telephones to the digital switching infrastructure.

The TN793CP is intended for deployment in Avaya Definity and Communication Manager systems, typically installed in the system’s port carrier or expansion cabinet. It provides multiple analogue line ports, allowing organisations to maintain compatibility with legacy analogue equipment whilst operating a primarily digital or IP-based telephony environment.

This is a legacy circuit pack associated with Avaya’s traditional TDM-based PBX platforms. Whilst these systems remain operational in many enterprise environments, the TN793CP is part of an older generation of telephony hardware. It continues to serve organisations maintaining existing Definity or Communication Manager installations where analogue connectivity is required.

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