GXP Series Grandstream IP Phones

Feature List

* 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

* lines indicators with individual SIP account profiles
* programmable hard keys and XML programmable context-sensitive soft keys
* Multi-line support of call appearance lines with dual-color LED indicators
* Expandable to additional 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
* And many more enterprise grade features

* Full duplex speakerphone w/advanced audio echo cancellation
* Headset jack (2.5 mm and RJ11) for broad headset compatibility
* Secure and automated provisioning for mass deployment
* SRTP for privacy protection (Advanced models)