| SIP Compliant and Protocols | SIP, TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), DHCP(client only), 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, GSM, iLBC, and G.722 (wideband) |
| Superb Audio Quality | Advanced Digital Signal Processing (DSP), Silence suppression, VAD, CNG, AGC high fidelity wideband audio (G.722) |
| Custom Ringtone Software | Convert most music files to a Grandstream ringtone. |
| Advanced Functionality | 2-line support, 3-way conferencing, multi-language support (MLS), headset enabled, AES encryption, etc. |
| Cost-effective IP Solution | Small office IP Phone less than $100 |