YEALINK SIP T42U IP phone Grey LCD Wi-Fi

<b>Sound and Hear with Remarkable Clarity</b><br><br>Yealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology for maximum acoustic performance. <br><br><b>Efficient Deployment and Management</b><br><br>Yealink T4U series supports effortless mass deployment and Zero Touch Provisioning with Yealink's Redirection and Provisioning Service (RPS) and Boot mechanism, making the device management labor-saving and efficient for the administrators.<br><br><b>Dual USB Ports for Flexible Expansion Choices</b><br>Bluetooth/Wi-Fi/Wireless Headset Dongles<br>With the optional USB dongles, the T42U can be enabled of the features including Bluetooth and Wi-Fi or connecting to a compatible wireless headset.Yealink SIP T42U. Product type: IP Phone, Product colour: Grey, Handset type: Wireless handset. Phonebook capacity: 1000 entries. Display: LCD, Display diagonal: 6.86 cm (2.7"), Display resolution: 192 x 68 pixels. Ethernet LAN interface type: Gigabit Ethernet, Supported network protocols: IPv4/IPv6, SIP v1 (RFC2543), v2 (RFC3261), UDP/TCP/DNS-SRV (RFC 3263), Security algorithms: 256-bit AES, HTTPS, TLS, WPA2, WPA3. AC adapter input voltage: 100 — 240 V, Input frequency: 50/60 Hz, AC adapter output voltage: 5 V