Yealink SIP-T42S IP Phone

✔ Factory Installed Device Certificate

This IP phone is a SIP compliant device for use with a SIP compatible hosted provider or a SIP compatible IP PBX.  It is not compatible with Microsoft Skype for Business.

• 2.7" 192x64-pixel graphical LCD with backlight
• Yealink Optima HD Voice
• 6 lines with dual color LED support
• Up to 12 SIP accounts
• 5 fixed feature keys - message, headset, mute, redial, hands-free speakerphone
• 4 context sensitive soft keys
• LED for call and message waiting
• 4-way navigation cluster with 6 navigation keys
• Volume control
• Dual-port Gigabit Ethernet
• Powered via Power over Ethernet or optional AC adapter (sold separately; see drop down option above)
• Headset support (RJ9)
• Wall mountable
• Simple, flexible and secure provisioning options
• USB 2.0 port for future Bluetooth, WiFi, and USB recording feature expansion
• T4S series features unified Auto-P template and unified firmware that provides simplified management and maintenance
• Opus codec support - 8kHz (narrowband) and 16 kHz (wideband) sampling rate

• Can be used with a variety of SIP compatible hosted service providers and SIP compatible IP PBX systems
• Check with your hosted provider or IP PBX documentation to confirm system compatibility