Grandstream GHP621W, Black Compact Hotel IP Phones, 2 lines, 2 SIP accounts, One 10/100 Mbsps Ethernet ports,USB Type-C port for charging external devices, PSU included

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 integrated Class 2 PoE module (GHP620/GHP621) Wi-Fi Built-in dual-band 802.11a/b/g/n/ac Wi-Fi module (2.4 and 5 GHz) (GHP620W/GHP621W models) Main buttons 26 keys, including: 6 programmable keys; 12 standard numeric keys (0-9: speed dial keys, configurable on the website, *, #); 5 special keys (Flash, redial, speakerphone, answering machine, hold); 3 volume control keys: increase, decrease, mute (with red LED indicator) HD Audio One HD tube 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, full-band Opus, in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO), VAD, AEC, CNG, PLC, AGC, AJB Telephony functions Dial, answer, redial, reset, speakerphone, voicemail (with server), translation, conference, hold/de-hold, microphone mute and on, flexible setting of subscriber groups, switching to a backup server in case of failure during speed dial Additional features Support for multicast paging and E911 service Door opening support via GDS Support for advanced jitter resistance algorithm USB Type-C connector for charging external devices (max. 500 mA) 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, 256-bit configuration file 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 encrypted XML configuration file AES Nutrition and energy efficiency Universal Power Adapter (GHP620W/GHP621W) 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 GHP phone, Handset with Cord, Mount, Universal Power Adapter (GHP620W and GHP621W), front panel, quick installation guide Colour White (GHP620, GHP620W), Black (GHP621, GHP621W) Physical characteristics 210mm (L) * 132mm (W) * 89.8mm (H) (with tube and stand) Device weight: 560g (GHP620/GHP621), 610g (GHP620W/GHP621W [USA]), 620g (GHP620W/ GHP621W [other countries]) Package weight: 860g g (GHP620/GHP621), 910 g (GHP620W/GHP621W [USA]), 920 g (GHP620W/GHP621W [other countries])