General

• System led to indicate power/phone/register status
• Supports T.38 FAX
• Supports BY-PASS FAX

Audio

• Codec: G.711A/u, G.729AB, G.726-32
• DTMF: In-band, RFC 2833 and SIP INFO
• Voice Activity Detection (VAD)
• Comfort Noise Generation (CNG)
• Background noise suppression
• Adaptive jitter buffers
• Packet loss concealment
• Different country tones

Advanced

• Call forwarding (busy/ no answer/ always)
• Call transfer ( unattended/ attended)
• Call holding
• Call waiting
• 3 way call conference 
• MWI
• Flexible dial plan
• Barring function for outgoing calls
• Caller ID(FSK/DTMF)
• Indication when N/A line available
• Dial via VoIP or PSTN as default selection
• Dial via PSTN when VoIP unavailable
• CLIR(rejects anonymous calls)
• CLIP(to make an anonymous call)
• Dial without registration
• Hotline/Warm-line
• Black List/ White List

Network / Security

• WAN / LAN：10/100M Ethernet ports,
• Bridge mode and route
• PPPoE for xDSL
• VLAN（802.1Q/P）
• NAT (NAPT)
• NAT transverse :Support STUN client
• DHCP client on WAN/ DHCP server on LAN
• Main DNS and secondary DNS server
• DNS Relay 
• NTP Client
• Firewall
• Web management access restricted
• VPN(L2TP/PTP)
• ping, tracert, telnet 

Maintenance and Management

• WEB management
• Management with different account right
• Recover firmware and factory reset through Uboot
• Upgrade firmware via HTTP,HTTPS, FTP, TFTP
• DHCP option66 and custom option for auto provisioning 
• Auto Provisioning to upgrade configuration file 
• Syslog

Physical

• Adapter Input: AC 100-240V
• Adapter Output: DC 12V/0.5A
• WAN Port -10/100 BASE-T RJ-45 for LAN
• LAN Port-10/100 BASE-T RJ-45 for PC 
• FXS:2 RJ11
• Power consumption: IDLE: 2.5W Active: 2.8W
• Operation Temperature: 0〜40℃
• Relative Humidity: 10〜65％
• SDRAM: 64MB
• FLASH: 16MB
• Device Dimension: 85 x 67.6 x 35mm
• Package size: 150 x 125 x 55mm
• Gross weight: 240g