Basic Features: - Voice Features - Call Hold - Unattended/ Attended call transfer - Call waiting and per call-waiting blocking - Call forward (Always, busy, no answer, power off) - VOIP Speed Dial - VOIP Digital Map - User Define Ring Tone - E.164 Dial Plan and Customize Dial Rules - Cal

Basic Features: - IEEE 802.3 10 Base T - Support G.711A/U, G.723.1, G.729/A/B/AB and GSM610 voice codec - SIP, H.323 V4 protocol - SIP RFC3261 - TCP/IP: Internet protocol - Support RTP RTCP protocol - Support VAD/CNG - One WAN, one LAN, support router - Support DHCP, PPPOE DNS TELNET - Sup

System - uClinux/ Astfin Hardware - CPU: 400MHz Blackfin 532 Chip - Four analog (FXO/FXS) module interfaces - NAND flash 256 M - SDRAM 256M 1G SD card Features - Built-in configurable Asterisk IP PBX - Astfin GUI - High performance OSLEC (Open Source Line Echo Canceller) - Voice mail - C