Description
Yealink EXP39 – Specifications
General / Purpose
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Device type: LCD expansion module (“sidecar”) for supported Yealink IP phones (e.g., SIP‑T26P, SIP‑T28P, SIP‑T38G)
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Provides additional programmable keys / line monitoring / speed-dial / BLF / BLA / feature-button capacity for heavy call-volume users (receptionists, call centers, operators)
Display & Keys
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Graphic LCD: 160 × 320 pixels
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Physical keys: 20 keys with dual-color LED indicators (status: free / busy / ringing / etc.)
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Page-switch support: enables additional 20 “soft-keys,” giving up to 40 programmable keys per module
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Daisy-chain support: up to 6 EXP39 modules can be chained to a single phone — up to 240 programmable keys total
Functionality / Supported Features
Each programmable key can be assigned to:
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Speed-dial / Hotline / Direct call
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Busy Lamp Field (BLF) / Bridge Line Appearance (BLA)
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Call pickup, call park/pick-up, intercom, hold, transfer, call forward, voicemail / message indication, DND, and other standard PBX/VoIP call-control features
Connection & Power / Physical
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Connectivity: 2 × RJ12 ports — one to connect to the phone, one to next module in chain
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Power: up to 2 modules can be powered by the host phone; if more modules are used, an external power adapter is required
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Weight: approx. 290 g
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Designed for desk placement beside a compatible IP phone
Intended Users / Ideal Use Cases
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Reception desks, switchboards, front-desk operations
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Call centers, helpdesks, support desks needing monitoring of many lines/extensions/trunks
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Administrative staff needing quick access to multiple extensions
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Busy office environments where one-touch call control improves productivity
Product Status / Notes
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End-of-Life (EOL) product — may no longer be produced but still usable with supported phones
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Verify firmware/software compatibility with host phone before deployment
