Grandstream GHP610, White Compact Hotel IP Phones, 2 lines, 2 SIP accounts, One 10/100 Mbsps Ethernet ports,

Protocols/standards SIP: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, TLS, SRTP Network: IPv4, IPv6, HTTP/HTTPS, ARP, ICMP, DNS (A-record, SRV, NAPTR), DHCP, SSH, TFTP, NTP, STUN, LLDP, TR-069, 802.1x Network interfaces One 10/100 Mbps Ethernet connector with auto-negotiation function and built-in module PoE Class 2 (GHP610/GHP611) Wi-Fi Built-in dual-band Wi-Fi module 802.11 a/b/g/n/ac (2.4 and 5 GHz) (models GHP610W/GHP611W) Main buttons 23 buttons, including 3 programmable keys, 12 standard buttons with numbers (0-9: web-based speed dial keys, *, #), 5 special keys (Flash, Redial, Speakerphone, Answering machine, Hold), 3 volume control keys: increase, decrease, mute (with red LED indicator) HD audio One HD handset with broadband audio Audio conferencing 2 SIP accounts and 2 lines, conferences for up to 3 participants Voice codecs and features Supports G.729A/B, G.711m/a-law, G.726, G.722 (broadband), G.723, iLBC and full-band OPUS. In-band and out-of-band DTMF (in RFC2833 audio signal, SIP INFO), VAD, AEC, CNG, PLC, AGC, AJB Telephony functions Dial, reply, translate, conference, redial, reset, speakerphone, voicemail (with server), hold/de-hold, mute and turn on the microphone, flexible configuration of subscriber groups, switching to a backup server in case of failure during speed dial Additional features Support for multicast paging and E911 service Support for advanced jitter resistance algorithm Door opening support via GDS Wall mounting One wall mount Quality of service Layer 2 (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) Safety Secure boot, random default password, unique security certificate for each device, passwords for administrators, configuration file with 256-bit AES encryption, SRTP, TLS, access control to the transmission medium based on 802.1x Multiple languages English and Chinese Update/Setup Firmware update via FTP/TFTP/HTTP/HTTPS, quick setup in 15 seconds, mass configuration using GDMS/TR-069 or an XML configuration file with AES encryption Nutrition and energy efficiency Universal Power Adapter (GHP610W/GHP611W) Input: 100-240 VAC, 50-60 Hz Output: 12V/0.5A (6W) Temperature and humidity Operation: from 0 to 40 °C Storage: -10 to +60 °C Humidity: 10 to 90% (non-condensing) Package Contents GHP61X phone, Handset with cord, Mount, Universal power adapter (GHP610W and GHP611W), quick installation guide Colour White (GHP610 and GHP610W), Black (GHP611 and GHP611W)