Executive IP Phone

- Grandstream executive HD telephone- 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/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- 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- SIP Compliance and protocols - SIP, TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), DHCP, PPPoE, TFTP, NTP, etc.- 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 phoneGSGXP2120