The IPPBX is a complete Asterisk powered IP-PBX with 8 FXS/ FXO/ LifeLine modules, It is an embedded system with built-in SIP/ IAX proxy server and NAT functions. It provide a solid, uniform platform for traditional PSTN communications as well as VoIP communications The IPPBX have 1WAN, 1LAN with router function.1-8 PORT FXS/ FXO/ LIFELINE modules. 1. Built-in configurable Asterisk IP PBX 2. 1WAN, 1LAN with router function. 1-8 Port FXS/ FXO/ LifetLine modules slots 3. Built-in SIP/ IAX proxy server and NAT trunking functions 4. PSTN analog trunk ( up to four PSTN trunks) 5. High performance OSLEC ( Open Source Line Echo Canceller) 6. Call forward, call waiting, call transfer 7. Voice mail, Call conference, Call queues 8. Astfin GUI, Flexible dial plan 9. Configurable IVR menu 10. replaceable 1G MMC/ SD memory.