Yealink SIP-T42U IP Phone

The Yealink SIP-T42U IP Phone is a powerful business communication solution designed to provide exceptional voice quality, flexible connectivity, and enhanced productivity. As part of Yealink’s T4U Series, the SIP-T42U combines a modern design with advanced features including support for up to 12 SIP accounts, dual USB ports, Gigabit Ethernet connectivity, and HD audio technology.

Featuring a 2.7-inch graphical LCD display with backlighting and a 192 x 64 resolution, the SIP-T42U delivers a clear and intuitive user experience. The phone is ideal for office professionals, managers, administrative staff, customer service teams, and users who require reliable access to multiple lines and advanced call management features.

The SIP-T42U supports up to 12 SIP accounts and includes programmable keys that help users efficiently manage calls, extensions, contacts, and frequently used features. Yealink HD Voice technology and Opus codec support provide crystal-clear audio quality for both handset and speakerphone conversations, ensuring professional communication throughout the workday.

Dual USB ports offer expanded functionality by supporting Bluetooth connectivity through the Yealink BT41 adapter, Wi-Fi connectivity through the WF40 or WF50 adapters, USB call recording, and USB headset integration. This flexibility allows businesses to customize deployments based on individual user requirements.

Dual-port Gigabit Ethernet connectivity and Power over Ethernet (PoE) support simplify installation while providing fast and reliable network performance. The phone also supports Electronic Hook Switch (EHS) functionality for compatible wireless headsets and can be expanded with Yealink color-screen expansion modules for users who manage high call volumes.

Combining advanced telephony features, flexible connectivity, and dependable performance, the Yealink SIP-T42U is an excellent choice for modern business environments.

Features

• 2.7-inch graphical LCD display
• 192 x 64 resolution
• Backlit screen
• Supports up to 12 SIP accounts
• Yealink HD Voice technology
• Opus codec support
• Dual USB ports
• Dual-port Gigabit Ethernet
• Power over Ethernet (PoE) support
• USB headset support
• EHS wireless headset support
• Bluetooth support via BT41 adapter
• Wi-Fi support via WF40 or WF50 adapter
• USB call recording support
• Dual firmware images
• Supports Yealink color-screen expansion modules
• Includes 1-Year Warranty

Specifications

• Phone Type:
  • IP Phone
• Display:
  • 2.7″ Graphical LCD
  • 192 x 64 Resolution
  • Backlit
• Accounts:
  • Up to 12 SIP Accounts
• Audio:
  • Yealink HD Voice
  • Opus Codec Support
  • Full-Duplex Speakerphone
• USB:
  • Dual USB Ports
• Network:
  • Dual-Port Gigabit Ethernet
• Wireless Options:
  • Bluetooth via BT41 Adapter
  • Wi-Fi via WF40 or WF50 Adapter
• Headset Support:
  • USB Headsets
  • EHS Wireless Headsets
• Expansion:
  • Compatible with Yealink Color Expansion Modules
• Power:
  • IEEE 802.3af Power over Ethernet (PoE)

Compatibility

Compatible with SIP-based hosted VoIP services and IP PBX systems.

Optional accessory support includes:

• Yealink BT41 Bluetooth Adapter
• Yealink WF40 Wi-Fi Adapter
• Yealink WF50 Wi-Fi Adapter
• Yealink USB Headsets
• Yealink Expansion Modules

Please verify compatibility with your service provider or phone system before deployment.

Ideal Applications

• Office Professionals
• Managers
• Administrative Staff
• Customer Service Teams
• Receptionists
• Small Businesses
• Enterprise Offices
• High Call Volume Environments

Includes

• Yealink SIP-T42U IP Phone
• 1-Year Warranty

Documentation

Refer to the Yealink SIP-T42U Datasheet for detailed specifications, installation, and configuration information.