Grandstream GRP2634, Carrier-Grade IP Phones, 8 line keys, 12 SIP accounts, 32 VPK and 10 MPK, Gigabit Ethernet ports, PoE, HD (with power supply)

Protocols/Standards SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS(A record, SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPV6 Network interfaces Two switched 10/100/1000 Mbps Ethernet ports with auto-detection, built-in PoE support Screen 2.8 inch Color TFT LCD Display 320x240 dots Wi-Fi Yes, Built-in dual-band WiFi 802.11 a/b/g/n/ac (2.4Hz and 5Hz) Bluetooth Yes, built-in Function buttons 8 line buttons with up to 4 SIP accounts, 10 MPK with a pocket for a paper label, 4 XML programmable context-sensitive on-screen buttons, 5 buttons (navigation, menu), 9 special function buttons for: MESSAGE (with LED indicator), TRANSFER, HOLD, HEADSET, MUTE, SEND/REDIAL, HANDS-FREE, VOLUME +, VOLUME Additional RJ9 ports headset jack with EHS support for Plantronics headsets, USB port for GUV series headsets from Grandstream and third-party USB headsets Voice codecs and features Support G7.29A/B, G.711µ/a-law, G.726, G.722(wide-band), G723, iLBC, OPUS, in- and out-of-band DTMF(in audio, RFC2833, SIP INFO) Telephony functions Hold, Transfer, Forwarding, 5-way Conference, Call Parking , Call Interception, Shared Line (SCA)/parallel call display (BLA), downloadable phonebook (XML, LDAP, up to 2000 entries), call waiting , call log (up to 2000 entries), screen personalization using XML, auto-dial when you pick up the phone, auto-answer, click-to-dial, flexible number plan, hot table system, personalized ringtones and music on hold, backup server and fault tolerance HD Audio Yes, high-resolution audio through a handset speaker and a speaker with broadband audio support, two microphones. The extension module No Footing Yes, 2 positions are available, wall mounting option (* wall mounting bracket sold separately) QoS Layer 2 QoS (802.1Q, 802.1P), 802.11e (WMM) and Layer 3 (ToS, DiffServ, MPLS) QoS Safety User and administrative level password, MD5 and MD5-sess authentication, configuration file with 256-bit AES encryption, SRTP, TLS, 802.1x, secure download Supported languages English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, Chinese, Korean, Japanese, etc. languages Update/Automatic configuration Firmware update via FTP/TFTP/TFTPS/HTTP/HTTPS, group configuration using GDMS/TR-069 or XML configuration file with AES encryption Nutrition and energy efficiency Universal Power Adapter included: Input: 100-240V; Output: +12V, 1A; Support for Power-over-Ethernet (802.3af) IEEE 802.3az Ethernet energy efficiency Max. power consumption 9.5W (power adapter) or 10.8W (PoE) Temperature and humidity Operation: from 0°C to 40°C Storage: -10°C to 60°C Humidity: 10% to 90% non-condensing