Yealink EXP43 4.3″ Color Expansion Module – Up to 60 Programmable Keys with Dual-LED Indicators

Yealink EXP43 – Specifications

General / Purpose

• Device type: Color LCD expansion module (sidecar) for compatible Yealink IP phones (e.g., T43U, T46U, T48U)

• Adds additional programmable line/function keys for reception desks, call centers, or administrative staff

Display & Screen

• Screen: 4.3‑inch color LCD

• Resolution: 272 × 480 pixels

• Backlit display with color icons for functions

Keys & Buttons

• 20 physical keys per page, each with dual-color LED for status (free, busy, ringing, etc.)

• Supports up to 3 pages, giving up to 60 programmable keys per module

• 3 dedicated control keys for fast page switching

Programmable Functions / Supported Features

Keys can be assigned to:

• Busy Lamp Field (BLF) / Bridge-Line Appearance (BLA) / Shared-line monitoring

• Speed-dial, hotline, direct call / extension dialing

• Call transfer, call forward, call park / pick-up, call hold, group pickup / listening, conference, voicemail / message waiting indicator

• Directory access (LDAP/XML) depending on phone or PBX support

Connectivity & Expandability

• Connection via RJ12 to compatible host phone; can daisy-chain up to 3 EXP43 modules per phone

• Total possible keys: up to 180 (3 × 60 keys)

• Power: first module can draw power from host phone; additional modules may require external power

• Adjustable stand with two angles; side-mounted next to IP phone