Yealink SIP T42U. Product type: IP Phone, Product color: Gray, Handset type: Wireless handset. Phonebook capacity: 1000 entries. Display: LCD, Display diagonal: 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
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| Supported network protocols | IPv4/IPv6, SIP v1 (RFC2543), v2 (RFC3261), UDP/TCP/DNS-SRV (RFC 3263) |
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