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The SIP-T48S IP Phone is a dynamic business communications solution for executives and professionals. This phone offers a large touch screen that makes switching between pages and applications swift, easy and convenient. The SIP-T48S is also with Yealink?s Optima HD Voice technology and wideband codec of Opus for unparalleled audio clarity. Phone users will think they are sitting in the same room with one another. The phone uses Gigabit Ethernet technology for rapid call handling. Plus, it works in conjunction with Bluetooth USB Dongle and Wi-Fi USB Dongle. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.


HD Audio


Yealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology for maximum acoustic performance. Being a totally open, highly versatile audio codec, Opus, is designed to perform a higher HD audio quality than other wideband codecs in a high network bandwidth; However, if your current network quality is poor, Opus can provide you with a better audio quality than other narrowband codecs. And its hearing aid compatible (HAC) handset helps the person who is with hearing loss to hear the voice more clearly.


Easy Customization and High Expandability


The SIP-T48S has a seven-inch, 800 x 480-pixel, backlit- color touch screen, which enables a rich visual presentation and easy easy navigation. A built-in USB 2.0 port can also be used for Bluetooth, Wi-Fi and USB call recording. The phone supports up to six expansion modules, for up to 240 additional buttons with a screen-based LCD display and LED system. Plus, it has 29 one-touch DSS keys which can be programmed to various features.

Yealink T48U 16 Line IP Handset

  • ? 7" 800 x 480-pixel color touch
     screen with backlight
    ? Opus* codec support
    ? USB 2.0
    ? T4S Auto-P template unified
    ? T4S firmware unified
    ? Up to 16 SIP accounts
    ? Dual-port Gigabit Ethernet
    ? PoE support
    ? Paperless label design
    ? Headset, EHS support
    ? Wi-Fi via WF40
    ? Bluetooth via BT40
    ? USB recording
    ? Supports expansion modules
    ? Stand with two adjustable angles
    ? Wall mountable

  • Audio Features

    > HD voice: HD handset, HD speaker
    > Hearing aid compatible (HAC) handset
    > Codecs: AMR-WB (optional), AMR-NB (optional),
     Opus*, G.722, G.711(A/?), 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

    Phone Features

    > 16 VoIP accounts
    > Call hold, mute, DND
    > One-touch speed dial, hotline
    > Call forward, call waiting, call transfer
    > Group listening, emergency call
    > Redial, call return, auto answer
    > 3-way conferencing
    > Direct IP call without SIP proxy
    > Ring tone selection/import/delete
    > Set date time manually or automatically
    > Dial plan, XML Browser, action URL/URI
    > RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
    > USB port (2.0 compliant) for:
     Bluetooth earphone through BT40,
     Contact synchronization through BT40,
     Wi-Fi through WF40,
     USB call recording through USB flash drive
    > Enhanced DSS key


    Display and Indicator

    > 7" 800 x 480-pixel color touch screen with backlight
    > 24 bit depth color
    > LED for call and message waiting indication
    > Wallpaper
    > Intuitive user interface with icons and soft keys
    > Multilingual user interface
    > Caller ID with name, number and photo
    > Screensaver
    > Power saving

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