Description
Yealink EXP20 – Specifications
General / Purpose
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Device type: LCD expansion module for IP phones
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Designed to extend functionality of supported Yealink IP phones (e.g., SIP‑T27G, SIP‑T27P, SIP‑T29G)
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Ideal for users who manage high call volumes, such as receptionists, admin staff, and call centers
Display & Keys
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Graphic LCD screen: 160 × 320 pixels, backlit
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20 physical programmable keys with dual-color LEDs
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Supports page-switch for additional keys — up to 38 buttons with multiple pages
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Supports daisy-chaining of up to 6 expansion modules for extended line capacity
Functionality / Use Cases
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Programmable keys support common PBX/VoIP functions: speed-dial, BLF (Busy Lamp Field), BLA (Bridged Line Appearance), call forwarding, transfer, hold, call park/pick-up, etc.
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Ideal for fast access to many lines or extensions in reception desks, contact centers, and multi-line operator setups
Physical & Installation
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Adjustable stand for ergonomic desktop placement
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Connection via RJ12 cable to compatible Yealink IP phone
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External power supply required if more than two modules are used
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Operating environment: temperature –10 °C to +50 °C; humidity 10%–95% non‑condensing
Limitations / Notes
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Cannot operate standalone — must be connected to a supported host phone
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End-of-Life product — newer expansion module types recommended for long-term use
