Network Features 
• Network Address Translation (NAT) 
 NAT allows multiple PCs to connect to an Internet Service Provider (ISP) using a
 single Internet access account. 
• Point-to-Point Protocol over Ethernet (PPPoE) Client Support: 
 If you are a DSL user, the router has a built-in PPPoE client for establishing a DSL
 link connection with the ISP. There is no need to install a further PPPoE driver 
 on your computers. 
• Smart QoS 
 The smart QoS provides stable voice quality while user access internet from private 
 LAN to internet at the same time. This device would start suppressing throughput 
 automatically when VoIP call proceed and keep full speed access when there is no
 VoIP traffic. 
• DDNS(Dynamic Domain Name Server) 
 DDNS is a service that maps Internet domain names to IP addresses. It allows you
 to provide Internet users with a domain name (instead of an IP Address) to access
 your Virtual Servers. 
• Virtual Server 
 Remote Users can access services such as the Web or FTP at your local site via 
 public IP addresses can be automatically redirected to local servers configured with
 private IP addresses. 


VoIP Features 
• H.323 / SIP dual mode communication 
• SIP 2.0 (RFC3261), H.323v4 compliant 
• Peer-to-Peer / H.323 GK / SIP proxy calls 
• Voice codec support: G.711(A-law / u-law), G.729 AB, G.723 (6.3 Kbps / 5.3Kbps) 
• Voice processing: Voice Active Detection, DTMF detection, G.165/G.168 compliant 
 echo canceller, silence detection, FAX (T.38 / T.30) Mode Option. 
• Built in adaptive buffer that helps to smooth out the variations in delay (jitter)
 for voice traffic. 
• Voice channels status display: This function display each port status likes as 
 on-hook, off-hook, calling number called number, talk duration, codec. 

MODEL
Model VIP-480FO
Hardware Specification
WAN 1x 10/100Mbps RJ-45 port
LAN 4x 10/100Mbps RJ-45 port
Voice 4x RJ-11 connection 4 x FXO
LED indicator System: PWR
WAN: 1, LNK/ACT
LAN: 4, LNK/ACT
Voice 4, In-Use/Ringing
Dimensions W x D x H 260x 130 x 40 mm
Protocols and Standard
Standard H.323 v2/v3/v4 and SIP (RFC 3261) , SDP (RFC 2327),
Symmetric RTP, STUN (RFC3489), ENUM (RFC 2916), RTP
Payload for DTMF Digits (RFC2833), Outbound Proxy Support
Protocols SIP 2.0 (RFC-3261), H.323, TCP/IP, UDP/RTP/RTCP, HTTP,
ICMP, ARP, NAT, DHCP, PPPoE, DNS
Fax support T.30, T.38
Voice codec G.711(A-law /μ-law), G.729 AB, G.723 6.3 Kbps / 5.3Kbps
Voice Standard Voice activity detection VAD
Comfort noise generation CNG
G.165/G.168 Echo cancellation
Dynamic Jitter Buffer
Advanced Function Virtual Server, Smart QoS, IP TOS (IP Precedence) / DiffServ,
Build-in NAT router function
Network and Configuration
Access Mode Static IP, PPPoE, DHCP
Management Web, Telnet
Operating Environment 0-40degree C, 0~95% humidity
Power Requirement 12V DC
EMC/EMI CE, FCC Class B

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