Dinstar DAG2500-48S

Dinstar VoIP Gateway DAG2500-48S

48 FXS VoIP Gateway, SIP Support, T.38 Fax, Dual Power, RJ45/RJ21, IPv6, SNMP, 1U Rackmount

Dinstar DAG2500-48S is a high-density FXS VoIP gateway with 48 analog ports in a compact 1U chassis. Featuring RJ45 or RJ21 interfaces, the device connects analog phones, fax machines, and PBXs to modern IP telephony networks. Supporting dual-stack IPv4/IPv6, SIP protocol, and a broad range of codecs including Opus, the gateway ensures reliable and high-quality voice performance. With advanced routing, remote provisioning via SNMP/TR069, and compatibility with BroadSoft, Asterisk, and FreeSWITCH, it is a cost-effective solution for large-scale enterprise and carrier-grade deployments.

Key Features:
  • 48 FXS ports via RJ45 or RJ21 interface
  • SIP support with TLS, NAT, and IPv6
  • T.38 fax and pass-through compatibility
  • G.711, G.729, AMR, iLBC, Opus codecs
  • Echo cancellation G.168 up to 128ms
  • 5 km max line length and reversed polarity
  • Digit map, IVR, voicemail, hotline, 3-way call
  • SNMP, TR069, Radius, cloud-based management
  • 3 network ports and RS232 console
  • Dual power supply support
  • CE and FCC certified, 1U rackmount
Product Specifications:
  • Manufacturer: Dinstar
  • Model: DAG2500-48S
  • Device Type: FXS Analog VoIP Gateway
  • FXS Ports: 48 × RJ45 or RJ21 (50 PIN)
  • SIP Protocol: SIP v2.0 (UDP/TCP)
  • SIP Features: TLS, SRTP, STUN, NAT, SIP Trunk, early media
  • Voice Codecs: G.711A/U, G.723.1, G.729A/B, G.726, AMR, AMR-GSM, iLBC, Opus (optional)
  • Fax Support: T.38 and Pass-through
  • DTMF Modes: Signal, RFC2833, Inband
  • Echo Cancellation: G.168 up to 128ms
  • Voice Features: VAD, CNG, jitter buffer, gain control, recording, bandwidth optimization
  • Caller ID: DTMF/FSK CLI Presentation
  • Dial Modes: DTMF and Pulse
  • Pulse Rate: 10 and 20 PPS
  • Polarity Reversal: Supported
  • Max Cable Length: 5 km
  • Call Features: Call waiting, transfer, forward, IVR, voicemail, 3-way call, abbreviated dial, DND
  • Network Protocols: IPv4, IPv6, HTTP/HTTPS, TFTP, FTP, SNTP, OpenVPN
  • LAN Ports: 2 × 10/100/1000 Mbps + 1 × 10/100 Mbps
  • Console Port: 1 × RS232 (115200 bps)
  • Remote Management: TR069, SNMP, Web, Telnet, Radius, Cloud (NMS)
  • Provisioning: Auto provisioning, firmware upgrade, backup/restore
  • Security Features: Web/SSH ACL, QoS, TLS, SRTP, certificate management
  • Power Supply: 100–240VAC, 50/60 Hz
  • Power Consumption: 95W
  • Power Options: Dual power supply supported
  • Operating Temperature: 0°C to 45°C
  • Storage Temperature: –20°C to 80°C
  • Humidity: 10%–90% non-condensing
  • Dimensions: 440 × 328 × 44 mm
  • Weight: 4.1 kg
  • Compliance: CE, FCC

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