Device Interfaces
• 4 port FXS c RJ-11
• Port 10/100BASE-TX RJ-45 WAN
• 4-port 10/100BASE-TX RJ-45 LAN

Types of connections
• DHCP-client
• PPPoE-client
• PPTP
• Cable BigPond (Australia)

Routing
• DHCP-server
• Virtual Server
• DMZ
• Filtering based on port, IP, MAC, URL
• RIP v.1, v.2, Static route
• DDNS: DynDns.org, TZO, 3322.ORG
• NAT Traversal: pass-through NAT, client STUN, UPnP

Phone book
• Server phone book management, up to 200 entries IAD

SIP
• Register port "By Port" "By machine
• Dialing in the standard E.164
• Redundant SIP PROXY (registration)
• SIP PING
• Configurable port NAT binding interval
• CLIR (Anonymous Caller ID)
• Function hot line / warm line
• Support for one-way communication system (SIP 183
• Functions of a group call
• Hold, Call Waiting, Call
• Call forwarding: with accompaniment / unaccompanied
• Call forwarding: unconditional, busy, no answer
• 3-way conference
• T.30 fax pass-through
• T.38 fax relay
• Adjustable tone detection Fax
• Out of band DTMF: RFC2833, SIP INFO

Voice Features
• G.711 a / u, G.726 (32K), G.729A, G.723.1
• Adjustable jitter-buffer
• Variable packet size (depending on codec)
• Detection and Noise Reduction
• Echo
• Local phone book enables you to call other VoIP-device without registration
• Speed ​​Dial
• Call filter - accept / reject calls from the IP-address
• ID-generation FXS-Call: DTMF, FSK (Bell core / ETSI)
• Support the FLASH button

Management
• Web-based interface and Telnet, IVR
• Backup server
• 2 registration privileges akkuantov
• 3 default language (English, Traditional Chinese, Simplified Chinese)
• Displays system information about device status and the status register
• Per call RTP packet summary
• PING Test
• STUN requests

Indicators
• Power
• Reset
• Alarm
• Run
• 1 to 4