Description
Yealink EXP40 – Specifications
Display & Interface
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Graphic LCD: 160 × 320 pixels, 16-level grayscale, backlit
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Supports two page views — allows switching between two sets of keys
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Desk stand with 2 adjustable angles; also wall-mountable
Keys & Programmable Functions
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20 physical keys, each with a dual-color LED for status (busy / free / ringing / etc.)
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Two page views provide up to 40 programmable keys per module
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Two independent control keys for quick page switching
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Programmable functions include:
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Busy Lamp Field (BLF) / Bridge-Line Appearance (BLA)
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Speed-dial / Hotline / Direct call
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Call transfer, call forward, call park / pick-up
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Call hold, conference, voicemail / message waiting indicator, DND, shared-line, directory access
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Connectivity & Expandability
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Two RJ12 ports (Data-IN and Data-OUT) to connect to a host phone or daisy-chain to another module
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Supports up to 6 chained modules on a single phone, giving up to 240 programmable keys
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Power: up to 2 modules powered by host phone; more than 2 require external 5 V / 1.2 A power supply
Physical & Environmental
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Dimensions: approx. 127 × 213 × 45 mm
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Operating temperature: -10 °C to +50 °C
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Operating humidity: 10% – 95% (non-condensing)
Compatibility
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Works with compatible Yealink IP phones that support external expansion modules (e.g., SIP‑T46S, SIP‑T46G, SIP‑T48S, SIP‑T48G)
