Description
Yealink SIP‑T54S – Specifications
General / Core Info
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Model: SIP‑T54S
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Type: Business‑class Media IP Phone (desktop)
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Supported SIP accounts: up to 16
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Display: 4.3‑inch color LCD, 480 × 272 pixels, backlit
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Built-in Bluetooth (for headset or mobile contact sync)
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Built-in USB 2.0 port (for USB headset, USB recording, or accessories)
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Dual-port Gigabit Ethernet (LAN + pass-through)
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Power over Ethernet (PoE) support
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Optional expansion: supports up to 3 color‑screen expansion modules
Audio & Voice Features
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HD voice: HD handset + HD speaker
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Hearing‑aid compatible (HAC) handset
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Speakerphone: full‑duplex with Acoustic Echo Cancellation (AEC)
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Supported audio codecs: Opus, G.722, G.711 (A/µ), G.723, G.726, G.729AB, iLBC
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DTMF support: In‑band, RFC 2833, SIP INFO
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Voice processing: VAD, CNG, PLC, noise reduction / voice enhancement
Phone / Call Features
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Call functions: hold, mute, Do Not Disturb (DND)
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Call transfer, call forward, call waiting
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One‑touch speed dial / hotline / redial / auto answer / direct IP call
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Call history (dialed / received / missed / forwarded)
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Local phonebook (up to 1000 entries), remote phonebook via XML/LDAP
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Blacklist, smart‑dial, import/export phonebook
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Busy Lamp Field (BLF) and Bridged Line Appearance (BLA) support
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Call pick-up, call parking, call recording (via USB), call park/pick‑up
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Hot‑desking / flexible seating, voicemail support, call logging
Interface & Connectivity
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2 × RJ45 Gigabit Ethernet ports
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1 × USB 2.0 port
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RJ9 handset port + RJ9 headset port
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Supports optional Wi‑Fi (via external dongle)
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Compatible with wired or wireless headsets via Bluetooth or USB
Display & User Interface
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Color screen 4.3″ with backlight
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LED indicators for call / message waiting, line‑status LEDs (multi‑color)
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Programmable line/feature keys: 10 line keys, plus soft‑keys, navigation keys, function keys (hold, mute, transfer, headset, speaker‑phone etc.)
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Multi‑page programmable keys, supports expansion modules — good for busy phone lines
Power & Physical / Environment
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Supports PoE (IEEE 802.3af) for simplified installation
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Alternate power via external adapter if needed
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Adjustable phone stand; wall‑mountable option
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Designed for typical office environments
