Mainstream IP Phone

- Grandstream enterprise grade IP phone- Expandable, secure and easy to manage- 4 dual-color line keys (with 4 SIP accounts), 3 XML programmable context-sensitive soft keys, up to 5-way conference, and up to 11 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- Automated phone book synchronization with directory server using XML- Integrated real-time web applications (weather, stock, currency, RSS news, etc.)- Back-lit 180x90 graphical LCD display with up to 8 level grayscale- Support SIP (RFC3261), TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), PPPoE, TFTP, NTP, DHCP (client only)- Support NAT traversal (STUN, etc), server fail-over, SIP presence (SIMPLE), and more- Dual 10/100Mbps Ethernet ports- Both RJ9 and 2.5mm jacks for professional and casual use- Support Caller ID display or block, per call or permanent- Call waiting, hold, mute, transfer (blind or attended),forward, and more- 3-way conferencing- Integrated Power-over-Ethernet (802.3af)- 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)- Large phonebook (up to 2,000 contacts) and call history (up to 2,000 records)- And many more enterprise grade features- 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/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. HD handset with HD wideband codec- 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 PhoneGSGXP2100