DAG3000-312S High-density Analog VoIP Gateway

High-density FXS VoIP Gateway

• Max 312 FXS Ports, RJ21(50-pin telco), 3U Chassis
  
• 312 concurrent calls for all voice codecs
  
• Ideal for VoIP deployments with large install base of analog devices

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High Reliability

• Redundant power supplies
  
• Dual bond GE: GE port failover & load balancing
  
• Lightning protection up to 4KV
  
• 5KM long lines
  
• Failover dial plan

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High Security

• Radius authentication
  
• TACACS authentication
  
• HTTPS
  
• TLS & SRTP
  
• Access control list

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Full VoIP Features & Broad Compatibility

• SIP v2, compatible with mainstream IP PBXs, Softswitches and SIP servers
  
• Voice, Fax (T.38 & T.30 bypass) and modem support
  
• IPv4/IPv6, VLAN, VPN, QoS
  
• Flexible routing and dial plan
  
• HD voice quality and various voice codecs

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Features:

• Digit Map
• IMPU
• Action URL
• Voicemail
• Custom IVR
• Call Holding
• Call Waiting
• Do-not-disturb
• Blind Transfer
• Attend Transfer
• Call Forward on Busy
• Call Forward on No Reply
• Ringing Group, Hotline
• 3-way Conference
• Early Media/Early Answer
• Abbreviated Dialing
• Access and Peer Mode
• SIP PnP Auto Provisioning
• PBX IVR
• Unconditional Call Forward
• SIP registration to different servers
• Flexible Call Routing Policy
• Caller/Called Number Manipulation
• Recording
• T.38/Pass-through
• Modem/POS
• Silence Suppression
• Bandwidth Optimization
• Comfort Noise Generation(CNG)
• Voice Activity Detection(VAD)
• Packet Loss Concealment
• Adaptive (Dynamic) Jitter Buffer
• Programmable Gain Control
• G.711A/U law, G.723.1, G.729A/B, G.726, iLBC, AMR, AMR-GSM
• DTMF mode: Signal/RFC2833/INBAND
• Echo Cancellation(G.168), with up to 128ms