| Grandstream 8 Lines 4 SIP Accounts PoE + GigE Color IP PhoneThe GXP2135 is the ideal selection for busy users who value call control, productivity and usability, and manage medium to heavy call volumes. Equipped with 8 lines and 4 SIP accounts, a 2.8 inch color LCD display, and 32 digital speed dial/BLF keys, the GXP2135 enables quick and powerful usability.
 
 As all Grandstream IP phones do, the GXP2135 features state-of-the-art security encryption technology (SRTP and TLS). The GXP2135 supports a variety of automated provisioning options, including zero-configuration with Grandstream’s UCM series IP PBXs, encrypted XML files and TR-069, to make mass deployment extremely easy.
 
 8 lines, 4 SIP accounts, 4 XML programmable context-sensitive soft keysDual switched, auto-sensing Gigabit ports, built-in PoE32 digitally programmable and customizable BLF/speed-dial keysBuilt-in Bluetooth for syncing headsets and mobile devices for contact books, calendars & call transferringHD audio on the handset and speakerphone; full duplex speakerphoneSupports EHS compatible Plantronics headsets4-way audio conferencing for easy conference calls
 
 
 
 SPECIFICATIONS:
 | Protocols/Standards | SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPV6, CDP/SNMP/RTCP-XR |  | Network Interfaces | Dual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE |  | Graphic Display | 2.8 inch (320x240) TFT color LCD |  | Bluetooth | Yes, integrated |  | Feature Keys | 8 line keys with up to 4 SIP accounts, 4 XML programmable context sensitive softkeys, 5 navigation/menu keys, 11 dedicated function keys for : MESSAGE (with LED indicator), PHONEBOOK, TRANSFER, CONFERENCE, HOLD, HEADSET, MUTE,   SEND/REDIAL, SPEAKERPHONE, VOL+, VOL |  | Voice Codecs | Support for G.729A/B, G.711µ/a-law, G.726, G.722(wide-band),G723.1, iLBC, Opus, in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC |  | Auxiliary Ports | RJ9 headset jack (allowing EHS with Plantronics headsets) |  | Telephony Features | Hold, transfer, forward, 4-way conference, call park, call pickup, shared-callappearance (SCA)/bridged-line-appearance(BLA), downloadable phonebook (XML, LDAP, up to 2000 items), call waiting, call log (up to 500 records), XML customization of screen, off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot desking, personalized music ringtones and music on hold, server redundancy and fail-over |  | HD audio | Yes, HD handset and speakerphone with support for wideband audio |  | Base Stand | Yes, 2 angle positions available, Wall Mountable |  | QoS | Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS |  | Security | User and administrator level passwords, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, SRTP, TLS, 802.1x media access control |  | Multi-language | English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, simplified and traditional Chinese, Korean, Japanese and more |  | Upgrade/Provisioning | Firmware upgrade via TFTP / HTTP / HTTPS, mass provisioning using TR-069 or AES encrypted XML configuration file, FTP/FTPS |  | Power & Green Energy Efficiency | Universal power adapter included:Input:100-240V; Output: +12V, 0.5A ; Integrated Power-over-Ethernet (802.3af) Max power consumption : 6.4W (power adapter) or 6.49W (PoE) |  | Physical | Dimension: 201mm(W) x 193mm(L) x 85mm(H) Unit weight:0.85kg Package weight:1.12kg |  | Temperature and Humidity | Operation: 0°C to 40°C Storage: -10°C to 60°C Humidity: 10% to 90% Non-condensing |  | Package Content | GXP2135 phone, handset with cord, base stand, universal power supply, network cable, Quick Installation Guide, GPL license | 
   
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