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

High Reliability

• Redundant power supplies

• Dual bond GE: GE port failover & load balancing

• Lightning protection up to 4KV

• 5KM long lines

• Failover dial plan

High Security

• Radius authentication

• TACACS authentication

• HTTPS

• TLS & SRTP

• Access control list

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

• 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