{"product_id":"yealink-sip-t48u-ip-phone-grey-led-wi-fi","title":"Yealink SIP-T48U IP Phone Grey LED Wi-Fi","description":"\u003cp\u003e\u003cstrong\u003eYealink SIP-T48U IP Phone Grey LED Wi-Fi\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSound and Hear with Remarkable Clarity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology for maximum acoustic performance. \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"1.png\" src=\"https:\/\/www.yealink.com\/website-service\/attachment\/editor\/upload\/image\/20231024\/1698111019682066921.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEfficient Deployment and Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYealink T4U series supports effortless mass deployment and Zero Touch Provisioning with Yealink's Redirection and Provisioning Service (RPS) and Boot mechanism, making the device management labor-saving and efficient for the administrators.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"sip phone service,wireless desktop phone,business phone systems,wired phone service\" src=\"https:\/\/www.yealink.com\/website-service\/attachment\/product\/image\/20220411\/2022041109375597b6fb76ac4665bf1aa0e2e5f90bc4.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eColor-screen Expansion Module EXP43\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 4.3-inch color screen expansion module is designed to offer advanced call handling capabilities with its simplified UI and up to 60 programmable keys for various features.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eYealink Wireless\/Wired USB Headsets\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeamlessly compatible with Yealink wireless\/wired USB headsets to meet the needs of users with large call volumes or headset preference and ideal for call center or administrative assistants.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBUILD YOUR UNCRACKABLE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePHONE SECURITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe T48U is shielded with the latest security mechanisms, making your conversations more secure than ever. With TLS 1.3, you benefit from faster and more robust encryption.  Learn more enhanced security features in the V87 upgrade.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.yealink.com\/website-service\/attachment\/product\/image\/20250402\/202504020628581631bfc.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUser Interface Features - \u003c\/strong\u003e7\" color touch screen with backlight\u003cbr\u003e\u003cstrong\u003eAudio Features - \u003c\/strong\u003eOptima HD voice with Acoustic Shield and Smart Noise Filtering\u003cbr\u003e\u003cstrong\u003eBasic Features - \u003c\/strong\u003eUp to 16 SIP accounts, PoE support , Stand with two adjustable angles, wall mountable\u003cbr\u003e\u003cstrong\u003eAdvanced Features - \u003c\/strong\u003eWi-Fi via WF40\/WF50, Bluetooth via BT41, Support expansion modules, Support USB recording\u003cbr\u003e\u003cstrong\u003eConnectivity - \u003c\/strong\u003eDual USB ports, dual-port Gigabit Ethernet, Headset, EHS support\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAudio Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHD voice:\u003c\/strong\u003e HD handset, HD speaker\u003c\/li\u003e\n\u003cli\u003eHearing aid compatible (HAC) handset\u003c\/li\u003e\n\u003cli\u003eAcoustic Shield\u003c\/li\u003e\n\u003cli\u003eSmart Noise Filtering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodecs: \u003c\/strong\u003eAMR-WB (optional), AMR-NB (optional), Opus, G.722, G.711(A\/µ), G.723.1, G.729AB, G.726, iLBC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTMF: \u003c\/strong\u003eIn-band, Out-of-band (RFC 2833) and SIP INFO\u003c\/li\u003e\n\u003cli\u003eFull-duplex hands-free speakerphone with AEC\u003c\/li\u003e\n\u003cli\u003eVAD, CNG, AEC, PLC, AJB, AGC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDisplay and Indicator:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e7\" 800 x 480-pixel color touch screen with backlight\u003c\/li\u003e\n\u003cli\u003e24 bit depth color\u003c\/li\u003e\n\u003cli\u003eLED for call and message waiting indication\u003c\/li\u003e\n\u003cli\u003eWallpaper\u003c\/li\u003e\n\u003cli\u003eIntuitive user interface with icons and soft keys\u003c\/li\u003e\n\u003cli\u003eMultilingual user interface\u003c\/li\u003e\n\u003cli\u003eCaller ID with name, number and photo\u003c\/li\u003e\n\u003cli\u003eScreensaver\u003c\/li\u003e\n\u003cli\u003ePower saving\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePhone Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e16 VoIP accounts\u003c\/li\u003e\n\u003cli\u003eCall hold, mute, DND\u003c\/li\u003e\n\u003cli\u003eOne-touch speed dial, hotline\u003c\/li\u003e\n\u003cli\u003eCall forward, call waiting, call transfer\u003c\/li\u003e\n\u003cli\u003eGroup listening\u003c\/li\u003e\n\u003cli\u003eEmergency call\u003c\/li\u003e\n\u003cli\u003eRedial, call return, auto answer\u003c\/li\u003e\n\u003cli\u003e10-way conferencing\u003c\/li\u003e\n\u003cli\u003eDirect IP call without SIP proxy\u003c\/li\u003e\n\u003cli\u003eRing tone selection\/import\/delete\u003c\/li\u003e\n\u003cli\u003eSet date time manually or automatically\u003c\/li\u003e\n\u003cli\u003eDial plan, XML Browser, action URL\/URI\u003c\/li\u003e\n\u003cli\u003eRTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)\u003c\/li\u003e\n\u003cli\u003eUSB port (2.0 compliant) for: - 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