{"product_id":"yealink-sip-t43u-12-line-ip-phone-with-power-supply","title":"Yealink sip-t43u 12-line Ip Phone with Power Supply","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe YEALINK sip-t43u is a 12-line SIP-based IP desk phone designed for business voice communications in professional office and commercial environments. The phone features a 3.7-inch black-and-white LCD display and supports Yealink Optima HD Voice technology along with the wideband Opus codec, delivering clear audio on every call. Dual USB ports allow connection of USB headsets, Bluetooth adapters, or Wi-Fi dongles simultaneously. The unit ships with a power supply included. Licensed HVAC techs, IT administrators, and telecom professionals handling commercial installs will find the sip-t43u straightforward to deploy on SIP-based PBX or hosted VoIP platforms.\u003c\/p\u003e\n\u003cp\u003eThe sip-t43u is suited for desk deployment in commercial offices, call centers, and multi-tenant business environments requiring a mid-range feature set. The phone supports up to 12 SIP lines and is compatible with the EXP43 expansion module for additional programmable keys, making it appropriate for reception desks, supervisors, or any role requiring high call volume management. The inclusion of dual USB ports enables flexible peripheral use without additional hardware adapters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e12 SIP lines support simultaneous registrations and call handling\u003c\/li\u003e\n  \u003cli\u003e3.7-inch black-and-white LCD display for clear menu and call visibility\u003c\/li\u003e\n  \u003cli\u003eDual USB ports enable Bluetooth, Wi-Fi adapter, USB headset, or USB recording device connectivity\u003c\/li\u003e\n  \u003cli\u003eYealink Optima HD Voice with Opus wideband codec for high-definition audio\u003c\/li\u003e\n  \u003cli\u003eEXP43 expansion module support for additional programmable line keys\u003c\/li\u003e\n  \u003cli\u003ePower supply included in the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with SIP-based PBX systems and hosted VoIP platforms. Compatible with the Yealink EXP43 expansion module for extended key capacity.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified IT or telecom technicians familiar with SIP provisioning and network configuration. Connect the phone to a PoE-capable switch port or use the included power supply before initiating provisioning. Ensure the network VLAN and SIP credentials are configured prior to first boot. Do not connect both PoE and the external power supply at the same time.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSIP Lines\u003c\/strong\u003e: 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003e: 3.7 inches, black-and-white LCD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Ports\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio Codec\u003c\/strong\u003e: Opus wideband, Yealink Optima HD Voice\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExpansion Module Support\u003c\/strong\u003e: EXP43\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply\u003c\/strong\u003e: Included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: YEALINK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: sip-t43u\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"YEALINK","offers":[{"title":"Default Title","offer_id":51268880892210,"sku":"SIP-T43U","price":141.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/308911693.jpg?v=1780708474","url":"https:\/\/voomisupply.com\/products\/yealink-sip-t43u-12-line-ip-phone-with-power-supply","provider":"Voomi Supply","version":"1.0","type":"link"}