Yealink SIP-T42S VoIP Phone

The Yealink SIP-T42S VoIP Phone is a professional business communication solution designed to deliver exceptional voice quality, enhanced productivity, and expanded connectivity options. Building upon the success of the T42G, the SIP-T42S offers improved performance, a faster user interface, and advanced integration capabilities, making it an ideal choice for office professionals, managers, customer service teams, and growing businesses.

Supporting up to 12 SIP accounts, the SIP-T42S provides the flexibility required for users who manage multiple lines, departments, or extensions. Its intuitive interface and programmable keys allow users to quickly access frequently used functions while streamlining daily communications.

Powered by Yealink Optima HD Voice technology and the Opus wideband codec, the SIP-T42S delivers crystal-clear audio quality through both the handset and full-duplex speakerphone. Advanced audio processing helps ensure professional conversations while reducing background distractions and improving overall call clarity.

A major advantage of the SIP-T42S is its integrated USB 2.0 port, which enables support for Bluetooth connectivity through the Yealink BT40 adapter, Wi-Fi connectivity through the WF40 adapter, and USB call recording using a compatible USB flash drive. This flexibility allows organizations to adapt the phone to their specific communication requirements without additional complexity.

The phone also includes dual-port Gigabit Ethernet connectivity and Power over Ethernet (PoE) support for simplified deployment and reliable network performance. Advanced business features such as call forwarding, call transfer, call waiting, conferencing, XML browser support, emergency calling, direct IP calling, and enhanced DSS key functionality help improve productivity across a variety of work environments.

With its combination of performance, expandability, and professional-grade features, the Yealink SIP-T42S remains an excellent VoIP phone for modern business communications.

Features

• Supports up to 12 SIP accounts
• Yealink Optima HD Voice technology
• Opus wideband codec support
• USB 2.0 connectivity
• One-touch speed dial and redial
• Call forwarding
• Call waiting
• Call transfer
• Call hold
• Call return
• Group listening
• Mute function
• Auto answer
• Do Not Disturb (DND)
• 3-way conferencing
• Direct IP calling
• Custom ringtone management
• Hotline and emergency calling
• XML browser support
• Action URL and URI support
• Enhanced DSS key functionality
• Power over Ethernet (PoE) support
• Includes 1-Year Warranty

Specifications

• Phone Type:
  • VoIP Phone
• Accounts:
  • Up to 12 SIP Accounts
• Audio:
  • Yealink Optima HD Voice
  • HD Handset
  • HD Speakerphone
  • Full-Duplex Speakerphone
  • Acoustic Echo Cancellation (AEC)
  • Opus Wideband Codec
• Network:
  • Dual-Port Gigabit Ethernet
• USB:
  • USB 2.0 Port
• USB Applications:
  • Bluetooth via BT40 Adapter
  • Wi-Fi via WF40 Adapter
  • USB Call Recording
• Conferencing:
  • 3-Way Conference Calling
• Power:
  • IEEE 802.3af Power over Ethernet (PoE)
  • Optional AC Power Adapter (Sold Separately)

Compatibility

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

Optional accessory support includes:

• Yealink BT40 Bluetooth Adapter
• Yealink WF40 Wi-Fi Adapter
• USB Flash Drives for Call Recording

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

Ideal Applications

• Office Professionals
• Managers
• Administrative Staff
• Customer Service Teams
• Call Centers
• Small Businesses
• Enterprise Offices
• Remote Workers

Includes

• Yealink SIP-T42S VoIP Phone
• 1-Year Warranty

Documentation

Refer to the Yealink SIP-T42S Datasheet for detailed specifications, installation, and configuration information.