High-density Analog VoIP Gateway

Dinstar DAG2500 is a reliable high-density analog VoIP gateway, with up to 96 FXS ports in 1U size, the most unique one you can find in the market. It offers a cost-effective solution for businesses who transit to new all-IP infrastructure unified communications such as Softswitches, IP PBXs, SIP trunks, and Hosted UC solutions while retaining investments in legacy phone equipment such as analog phones, fax machines, modems, or PSTN lines.

Interoperable with legacy / IP equipment, easy-to-use management, and eliminating the cost of re-wiring, DAG2500 is ideal for hospitality, apartment buildings, hospitals, schools/campuses, and service providers.

  • 48/72/92 FXS


  • 3-Way Conference

  • T.38/T.30


  • VLAN

Ultimate High-density Design in 1U

The only Analog VoIP Gateway with 96 ports in 1U size, saving your rack space and cost

48/72/96 ports optional

RJ21(50-pin telco), RJ45 & DB37 optional

High Reliability

Market-proven hardware design

Dual bond GE: GE port failover & load balancing

Optional redundant power supplies (Available only on 48/72 ports)

Multiple SIP server failover mechanism

Failover dial plan

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


Flexible routing and dial plan

HD voice quality and various voice codecs

Easy Management

  • Web interface with quick configuration wizard, the setup is not complicated anymore

    Auto-provisioning for large-scale deployments

  • Support SNMP and TR069

    Dinstar Cloud NMS: Dinstar own mangement system enables you to manage, monitor and maintain devices in bulk

  • Features
  • Download
  • Digit Map
    Action URL
    Custom IVR
    Call Holding
    Call Waiting
    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
    Unconditional Call Forward
    SIP registration to different servers
    Flexible Call Routing Policy
    Caller/Called Number Manipulation
    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
  • DAG2500-48/72/96S Analog VoIP Gateway Datasheet
    DAG2500-48/72/96S Analog VoIP Gateway User Manual
    DAG2500 Analog VoIP Gateway Quick Installation Guide