4 Port Sip / H. 323 VOIP Gateway

Support SIP and H.323 protocols: SIP Registration and Digest Authentication;Support 
backup proxy registration H.323 Gatekeeper Registration

• SIP Single Number / Account for multiple ports
   
  Caller ID Delivery: FXS support DTMF&FSK Caller ID generation
   
  Flexible and Smart VoIP call Dialing Book: VoIP call Book could provide any  
  application VoIP call to any type destination (Domain name / IP address, PSTN or  
  PBX ) or hunting number setting
  
• Supports standard voice features such as Caller ID, Consultation Hold, Call Waiting, 
  Blind Call Transfer,Attended Call Transfer, Call Forwarding, Mid-Call DTMF (only using  
  RTP)and 3-Way Conferencing
  
• AC termination Impedance : 600/900 OHM and complex impedance 
  
• Answer Supervision for Polarity Reversal Detection and Voice detection
  
• NAT traversal: This feature allow gateway to operate behind any NAT/Firewall device.  
  
• Need not to change any configuration of NAT/Firewall like setting virtual server
  
• Smart-QoS: This feature provides good voice quality when user place a VoIP call and   
  also access internet at the same time. The gateway will automatically start to reserve  
  bandwidth for voice traffic when VoIP call proceeds
  
• Call Hunting Facility: This function helps gateway to use the lines effectively. This  
  facility automatically transfers your incoming call to a free line. Subscribers need not  
  indicate numerous numbers of each port of gateway
  
• Voice channels status display: This function display each port status like as on-hook  
  off-hook, calling number called number, talk duration, codec
  
• Flash Detection and Generation Program: FXO support Flash Generation and FXS   
  support Flash Detection
  
• STUN support for NAT traversal  
  
• FXO answer Mode : FXO provides Ringing Answer, Connection Answer and Non  
  Answer for configuration
  
• VoIP Encryption: Encrypt peer to peer VOIP calls can avoid VoIP blocking of internet   
  
  Voice Codec: G.711(A-law /μ-law), G.729 AB, G.723 (6.3 Kbps / 5.3Kbps)
  
• FAX support : T.30 / T.38
  
• VoIP Encryption: Encrypt peer to peer VOIP calls can avoid VoIP blocking of internet
  
• Echo Cancellation: G.165/G168
  
• FXS Tone Table Configuration: Support tone frequency and cadence configuration
  
• FXO hang up detection / anti-seized : Busy Tone Learning Automatically / Manual  
  Busy Tone Learning
  
• Answer supervision: Support Battery Reverse Detection and Voice Detection
  
• FXO answer delay time: Support delay 0 8000 ms to answer
  
• Adjustable AC Termination Impedance : 600 / 900 OHM and complex Impedance
  
• Failsafe Mechanism (FXS relay to FXO) : Power failed bypass support / Internet Failed  
  bypass / Registered Failed bypass / Unconditional bypass 
  12K Hz and 16K Hz Pulse Metering (Customized)
  
• Support MWI (Message Waiting Indicator) by SIP Notify 
  
  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
  
• LAN :Support Virtual Server, DHCP Server
  
• WAN: Support PPPoE client, DHCP client, Fix IP Address, DDNS client
  
• Network Address Translation: Providing build-in NAT router function
  
• Smart QoS: Guarantee the voice bandwidth
  
• IP TOS (IP Precedence) / DiffServ
  
• Voice channels status display
  
• Direct Dialing Mode : peer to peer call (support IP Address Call or Domain Name Call)
  
• Register Call Mode : register to SIP Proxy Server or H.323 Gatekeeper
  
• Adjustable volume : - 9 db ~ 9 db
  
• Silence Compression / VAD
  
• Auto Dial for speed
  
• Dynamic Jitter Buffer 
  
• Hot-Line and Warm-Line Support
  
• Configuration & Management
  
• Web-based Graphical User Interface
  
• Remote management over the IP Network
  
• Backup and Restore Configuration file
  
• Syslog client support
  
• Auto-Provision
  
• General Specification
  
• AC power : AC100V-240V, DC12V/1.5A,50/60 Hz 
  
• Temperature: 0°C ~ 40°C (Operation)
  
• Humidity: up to 90% non-condensing
  
• Emission: FCC Part 15 Class B, CE Mark
  
• Dimension : 260 x 130 x 35 mm
  
• Weight: 900g (Aluminum)