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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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