- Enterprise-Grade High-Performance IP Phone - Supports Gigabit speeds and up to 32 virtual BLF/speed-dial keys - 2.8" TFT color LCD display - Full HD audio with full duplex speakerphone - Up to 8 lines and 4 SIP accounts - Built-in Bluetooth for syncing with mobile devices and Bluetooth headsets - Supports EHS-compatible Plantronics headsets - RJ9 Headset port for wired headsets - Conference calling up to 4 ways - Ethernet Ports: 2 auto-sensing Gigabit with integrated PoE - 4 Programmable soft keys - Voice Codecs: G.729A/B, G.711µ/a-law, G.726, G.722(wide-band), in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO) - Wall-mountable - QoS: 802.1Q, 802.1P, ToS, DiffServ, MPLS - Security: user and admin passwords, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, SRTP, TLS, 802.1x media access control - Multi-language - Power Source: 100-240V 12V, 0.5A adapter (included) or 802.3af PoE - Max PoE Power Consumption: 6.49W - Hold - Transfer - Call forward - Call park - Call pickup - Call waiting - Call log with up to 500 records - Music on hold - Package Includes: GXP2135 phone, handset with cord, base stand, universal power supply, network cable, quick installation guide, GPL license