Yealink SIP-T42S IP Phone, Dual Gig. Ethernet, Graphical LCD, PoE (AC Adapter optional)

Dynamic business communications tool for superior voice communications and extended functionality.

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The SIP-T42S IP phone has a faster, more responsive interface than it's predecessor, the SIP-T42G, and offers better overall performance. The SIP-T42S is a 12-line IP phone with multiple programmable keys for enhancing productivity. It is with Yealink Optima HD Voice Technology and wideband codec of Opus for superb sound quality and crystal clear communications. What’s more, the SIP-T42S is built with Gigabit Ethernet technology for rapid call handling. Plus, with an all-new USB port, the SIP-T42S boasts unparalleled functionality and expansibility, which comes ready for future Bluetooth, Wi-Fi and USB recording features. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.

• 2.7" 192x64-pixel graphical LCD with backlight
• Opus* codec support
• USB 2.0
• T4S Auto-P template unified
• T4S firmware unified
• Up to 12 SIP accounts
• Dual-port Gigabit Ethernet
• PoE support
• Paperless label design
• Headset, EHS support
• Integrated stand with 2 adjustable angles
• Wall mountable


T4S Series

Audio Features
• HD voice: HD handset, HD speaker
• Codecs: Opus, G.722, G.711(A/µ), G.723.1, G.729AB, G.726, iLBC
• DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
Display and Indicator
• 2.7" 192x64-pixel graphical LCD with backlight
• LED for call and message waiting indication
• Wallpaper
• Intuitive user interface with icons and soft keys
• National language selection
• Caller ID with name, number and photo
• Power saving
• Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af), class 2
• 1 x USB port (2.0 compliant)
• 1xRJ9 (4P4C) handset port
• 1xRJ9 (4P4C) headset port
• 1 x RJ12 (6P6C) EHS port
Other Physical Features
• Stand with 2 adjustable angles
• Wall mountable (optional)
• External Yealink AC adapter (optional):AC 100~240V input and DC 5V/1.2A output
• Power consumption (PSU): 1.69-5.0W
• Power consumption (PoE): 2.47-12.5W
• Dimension (W*D*H*T): 212mm*189mm*175mm*54mm
• Operating humidity: 10~95%
• Operating temperature: -10~50°C