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Dinstar DAG2000-24S 24 FXS ports multi-functional Analog VoIP Gateway



Model: DAG2000-24S-V421

The DAG2000-24 VoIP Gateway 24-Ports is a multi-functional analog gateway offering seamless connectivity between IP-based telephony networks and legacy telephones (POTS), fax machines and PBX systems. With the standard RJ11 and RJ21 interfaces, the device offers maximum 32 FXS ports. It provides the standard SIP protocol and is compatible with leading IMS/NGN platforms and SIP-based IP telephony systems. It is ideally suited for small and medium businesses, call centers and multi-location environments that need VoIP services.


  • Cost-effective VoIP adapter with 24 FXS ports  
  • Support legacy telephones, fax machines and POS terminals  
  • Fax over IP (T.38 and Pass-Through)  
  • Support TR069, SNMP protocol and DMCloud to manage devices remotely    

Telephone Interface:

  • 24*FXS, RJ11
  • 2*RJ21, 50 PIN
  • Network Interface:
  • 4*LAN, 10/100Mbps, RJ45
  • Console: 1*RS232, 115200bps


  • Connection Interface: RJ11 and RJ21
  • Caller ID: DTMF/ FSK
  • Support Reverse Polarity
  • Dial mode: DTMF and Pulse
  • Pulse: 10 and 20 PPS
  • Maximum wiring length: 3000m
  • Programmable Call Progress Tone

Supplementary Business

  • Pick Up on Group
  • 3-Way Conference
  • Busy Call Forwarding
  • No answer Call Forwarding
  • Unconditional Call Forwarding
  • Blind Transfer, Attend Transfer
  • Support Warm/Immediate Hotline
  • Message Waiting Indicator (Voicemail)
  • Call Waiting, Call Hold, Do-Not-Disturb

Software Features

  • Action URL
  • Hunting Group
  • Web access control rules
  • Telnet access control rules
  • PPPoE/IPv4/IPv6(Bridge mode)
  • Routing Rules based on Prefixes
  • The number of graphs(Digitmap)
  • Caller/Called Number Manipulation

Voice Processing

  • VLAN 802.1P/802.1Q
  • Layer3 QoS and DiffServ
  • Coder: G.711A/U law, G.729A/B,
  • G.723.1, G.726, iLBC and AMR
  • Programmable Gain Control
  • Voice Activity Detection (VAD)
  • Adaptive (Dynamic) Jitter Buffer
  • Hook Flash, Silence Suppression
  • T.38/Pass-through, Modem/POS
  • Comfort Noise Generation (CNG)
  • Echo Cancellation (G.168), with maximum 128ms
  • DTMF mode: Signal/RFC2833/Inband

VoIP Protocol

  • RFC3266 IPv6 in SDP
  • RFC4028 Session Timer
  • RTP/RTCP, RFC2198, 1889
  • Early Media/ Early Answer
  • Primary/Backup SIP server
  • SIP Trunks, Outbound Proxy
  • STUN, Static/ Dynamic NAT, DTR
  • DNS SRV/ A Query/ NATPR Query
  • RFC2806 TEL URI, RFC3581 NAT, rport
  • Protocol: SIP v2.0 (UDP/TCP), RFC3261 SDP, RTP(RFC2833), RFC3262, 3263, 3264, 3265, 3515, 2976, 3311


  • Web/Telnet
  • Ping/Tracert Test
  • Network Capture
  • Auto Provisioning
  • IVR local Maintenance
  • SNMP v1/v2/v3, TR069
  • DMCloud Management
  • Line Diagnostics (GR909)
  • Firmware Upgrade via Web
  • Configuration Backup/Restore
  • Syslog, NTP/Summer Time, CDR


  • Power Adapter:
  • 100-240VAC, 50-60 Hz
  • Power Consumption: 40W(Typical)
  • Operating Temperature: 0 ? ~ 45 ?
  • Storage Temperature: -20 ? ~80 ?
  • Humidity: 10%-90% Non-Condensing
  • Dimensions(W/D/H): 440*250*44mm
  • Unit Weight: 3.2kg
  • Compliance: CE, FCC

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