GXP2120 6-line Executive HD Telephone
	The GXP2120 Executive HD telephone features 6 lines, a generous 320x160 backlit graphical LCD, 4 XML programmable context-sensitive soft keys, 7 XML programmable BLF extension keys, dual network ports with integrated PoE, and 5-way conference. Delivering superior HD audio quality, rich telephony features, personalized information and customizable application service, the GXP2120 is the perfect choice for enterprise users looking for a high quality, feature rich multi-line executive IP phone with advanced functionalities and performance. The GXP2120 also supports automated provisioning for easy deployment, advanced security protection for privacy, and broad interoperability with most 3rd party SIP devices and leading SIP/NGN/IMS platforms.
6 dual-color line keys (with 6 SIP accounts), 4 XML programmable context-sensitive soft keys, up to 5-way conference, and up to 13 call appearances with 7 dual-color BLF extension keys        HD wideband audio, superb full-duplex hands-free speakerphone with advanced acoustic echo cancellation and excellent double-talk performance        Optional add-on line expansion modules with an extra 112 extension keys for receptionist and heavy call center requirements        Integrated real-time web applications (weather, stock, currency, RSS news, etc.)       Large phonebook (up to 2,000 contacts) and call history (up to 2,000 records)
Features & Benefits
Technical Features & Benefits
Support SIP (RFC3261), TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), DHCP(both client and server), PPPoE, TFTP, NTP       Dual switched 10/100Mbps Ethernet ports w/integrated Power-over-Ethernet (802.3af)       Support NAT traversal (STUN, etc), server fail-over, SIP presence (SIMPLE), and more       Generous 320x160 pixel backlit graphical LCD display with up to 8 level grayscale
Call Features & Benefits
6 lines indicators with individual SIP account profiles       7 programmable hard keys and 4 XML programmable context-sensitive soft keys       Multi-line support of up to 13 call appearance lines with dual-color LED indicators       Expandable to additional 112 lines through expansion key-modules       Support Caller ID display or block, per call or permanent       Call waiting, hold, mute, transfer (blind or attended), forward, and more       Multi-party conferencing (up to 5-way)       And many more enterprise grade features
Handset Features & Benefits
Full duplex speakerphone w/advanced audio echo cancellation       Headset jack (2.5 mm and RJ11) for broad headset compatibility       Large phonebook (up to 2,000 contacts) and call history (up to 2,000 records)       Automated provisioning using TR-069 or encrypted XML configuration file, SRTP and TLS for advanced security protection, 802.1x for media access control       Automated personal information service (e.g., local weather, stock, currencies, RSS news, etc), personalized music ring tone/ring back tone/music-on-hold, flexible customizable screen content & format using XML, and advanced Web and enterprise applications integration (pending)       And many more enterprise grade features
Feature Specifications
SIP Compliant and Protocols : SIP, TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record  and SRV), DHCP, PPPoE, TFTP, NTP, etc.       Networking Interfaces : Dual 10/100mbps Ethernet ports.       Voice Codecs : G.711 (a/µ-law), G.723.1, G.729A/B, G.726, iLBC, and G.722 (wideband).       Superb Audio Quality : Advanced Digital Signal Processing (DSP), Silence suppression, VAD, CNG, AGC  high fidelity wideband audio (G.722). HD handset.       Custom Ringtone Software : Convert most music files to a Grandstream ringtone.       Advanced Functionality : Multi-line support, multi-party conferencing (5-way), multi-language support (MLS), headset enabled, expandable, intercom, AES encryption, etc.       Cost-effective IP Solution : Small to Medium enterprise office IP Phone.