1300034 Yealink Yealink T3x Series Phone Accessory

The Yealink 1300034 is the Expansion Module 39 (EXP39), a hardware sidecar designed to extend the functionality of compatible Yealink SIP desk phones. This module adds programmable keys with integrated LCD labels, enabling users to configure speed dials, busy lamp field (BLF) indicators, call park orbits, and other telephony features directly from the expansion panel.

The EXP39 is intended for deployment alongside Yealink’s T3x series IP phones, providing receptionists, administrative staff, and call centre operators with rapid access to monitored extensions and frequently dialled contacts. Multiple expansion modules can be daisy-chained to further increase capacity for high-demand environments.

This expansion module remains a practical solution for organisations utilising Yealink T3x series handsets that require additional programmable keys beyond those available on the base phone unit. It draws power directly from the connected host phone, simplifying installation.

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