The Yealink SIP T42U is a sophisticated IP phone designed for modern communication needs. Featuring a sleek grey finish, this phone includes a wireless handset for added convenience and mobility. It boasts an impressive phonebook capacity, allowing you to store up to 1,000 contacts. The device is equipped with a clear LCD display with a 2.7-inch (6.86 cm) diagonal and a resolution of 192 x 68 pixels, ensuring easy readability of information. For connectivity, the T42U supports Gigabit Ethernet, ensuring fast and reliable network performance. It is compatible with a wide range of network protocols, including IPv4/IPv6, SIP v1 (RFC2543), SIP v2 (RFC3261), and UDP/TCP/DNS-SRV (RFC 3263). Enhanced security is provided by its support for 256-bit AES, HTTPS, TLS, WPA2, and WPA3 security algorithms. The phone comes with an AC adapter that operates with an input voltage range of 100 – 240 V and an input frequency of 50/60 Hz. The adapter provides a stable output voltage of 5 V, ensuring reliable power delivery. Overall, the Yealink SIP T42U combines advanced features with user-friendly design, making it an ideal choice for both professional and personal use.