| A. |
Protocol: SIP(RFC 3261) |
| B. |
interface: 1 Ethernet (WAN) & 1 Ethernet (PC) |
| C. |
LCD: 2 lines x 16 letters |
| D. |
Codec: G.711A-Law/u-Law, G.729AB, G.723.1 |
| E. |
Voice Quality: VAD, CNG, AEC(G.168) |
| F. |
Easy setting by Web browser |
| G. |
Multi-user registration |
| H. |
Multi-line |
| I. |
Auto firmware upgrade (TFTP) |
| J. |
3-way conference |
| K. |
Speed Dial |
| M. |
Phone Book |
| N. |
IP address: Static IP/PPPoE/DHCP |
| O. |
NAT traversal: UPnP and STUN |
| P. |
Handset/Speaker phone |
| Q. |
Out-of-band DTMF (RFC2833) |
| R. |
Voice Mail with message waiting indicator |
| S. |
Call Forward (Busy, No answer, Unconditional) |
| T. |
Call Transfer (Unattended, Blind, Attended) |
| U. |
Call Park, Call Pick-up |
| V. |
QoS: IEEE802.1p/q |
| W. |
Anonymous call block, Caller ID |
| X. |
Jitter buffer auto adjustment |