Grandstream Networks GRP2602. Product type: IP Phone. Product colour: Black. Handset type: Wired handset. Lines quantity: 2 lines. Display: LCD. Display diagonal: 5.61 cm (2.21"). Display resolution: 132 x 48 pixels. Ethernet LAN interface type: Fast Ethernet. Ethernet LAN data rates: 10.100 Mbit/s. Supported network protocols: SIP RFC3261. TCP/IP/UDP. RTP/RTCP. RTCP-XR. HTTP/HTTPS. ARP. ICMP. DNS(A record. SRV. NAPTR)..... AC adapter input voltage: 100 - 240 V. Input frequency: 50/60 Hz