IP PBX
8FXS or 8FXO
SIP server: 2 IP account with password protection

IP PBX

TCP(RFC793)/IP(RFC791)/UDP(RFC768)/ICMP(RFC792)/ARP(RFC826)/SNTP(RFC2030)/HTTP(RFC2616)DHCP(RFC2131)/TFTP (RFC1350)/DNS(RFC1034,RFC1035)
SIP RFC3261, RFC3262, RFC3666, RFC2543
-IP (RFC0791), TCP (RFC0793), UDP (RFC0768), ARP (RFC0826)
-ICMP, ARP, RARP, SNTP
-SDP TFTP HTTP DNS
-SIP server: 2 IP account with password protection
-Pubic Server/ Private server: can connect to ISP and Private SIP server at same time
-Authentication: none, HTTP 1.1 basic/digest authentication for Web setup, MD5 (RFC2069/ RFC 2617)
-NAT traversal: STUN, NAT ALG, NAPT, SIP Express router
-2 RJ-45 auto-sensing 10/100Mbps, with Router or Bridge Mode
-DHCP client (RFC2131) / TFTP client / PPPoE client
-Static IP / DHCP / PPPoE
-DNS client with 2 servers IP
Audio Codec G.711 µ / A G.723.1 G.726 G.729 GSM ILBC SPEEX ADPCM LPC10
Dial Tone Signal Generation
DTMF (out of Band RFC 2833 / in band)
SIP Info interoperate with CISCO SIP device
PBX features
-Batch add user extensions
-conference
-voice mail
-call queue
-call rules
-time rules
-IVR
-register status of extension
-system backup
Configuration Support
-Web, SSH, TFTP, HTTP
-Password protection for configuration
Firmware Upgrade
-TFTP; HTTP;