Yealink sip-t43u 12-line Ip Phone with Power Supply

Product Description

The 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.

The 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.

Key Features

• 12 SIP lines support simultaneous registrations and call handling
• 3.7-inch black-and-white LCD display for clear menu and call visibility
• Dual USB ports enable Bluetooth, Wi-Fi adapter, USB headset, or USB recording device connectivity
• Yealink Optima HD Voice with Opus wideband codec for high-definition audio
• EXP43 expansion module support for additional programmable line keys
• Power supply included in the box

Compatibility

Designed for use with SIP-based PBX systems and hosted VoIP platforms. Compatible with the Yealink EXP43 expansion module for extended key capacity.

Installation Notes

Installation 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.

Technical Specifications

• SIP Lines: 12
• Display: 3.7 inches, black-and-white LCD
• USB Ports: 2
• Audio Codec: Opus wideband, Yealink Optima HD Voice
• Expansion Module Support: EXP43
• Power Supply: Included

Standard Information

• Brand: YEALINK
• Manufacturer Part Number: sip-t43u