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 conferencing. Delivering superior HD audio quality, rich telephony features, personalized information and customizable application services, 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 conferencing, 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

• Support SIP (RFC3261), TCP/IP/UDP, RTP, 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
• 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)
• Full duplex speakerphone w/advanced audio echo cancellation
• Headset jack (2.5 mm and RJ9) 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

GXP2120 Product Brochure/Specifications

• French

SIP Compliant and Protocols	SIP, TCP/IP/UDP, RTP, 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/u-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

User Manuals

GXP21xx Series User Manual

Quick Installation Guides

GXP2110/GXP2120 Quick Installation Guide

Declaration of Conformity

Declaration of Conformity Grandstream GXP2120

Marketing Documents

GXP Series Comparison Chart

FAQ

GXP Enterprise Phone Series FAQ

White Papers

XML Application Guide

XML Based Customizable Screen

XML Based Downloadable Phonebook

Grandstream TR-069 Information

Grandstream Provisioning Guide

Grandstream GXP21xx/GXP14xx "Plug-n-Play"Auto-Configuration

Interoperability

Configuring GXP Series with Asterisk

Configuring GXP Series with 3COM

Configuring GXP Series on Quadro LAN

GXP BroadWorks SCA Configuration Guide

Broadsoft Provisioning Templates

Configuring GXP Series with 3CX

Configuring GXP Series with Ring Central

Compatible Headsets

Datasheets

Power Consumption Datasheet

Firmware

Firmware Download

Tools

Grandstream IP Phone Custom Ringtones Generation Tool

Tools, Utilities, and Configuration Templates

Grandstream Device IP Discovery Tool

Resources

GXP-Series Phone Labels

GNU General Public License

GNU GPL Download