Dinstar DAG2500-48S 48 Port FXS Analog VoIP Gateway

SPECIFICATION

DESCRIPTION

Dinstar DAG2500-48S 48 Port FXS Analog VoIP Gateway

The Dinstar DAG2500-48S is a high-performance 48-port FXS analog VoIP gateway designed to provide seamless connectivity between traditional analog telephone systems and modern IP-based VoIP networks . As part of the DAG2500 series, this gateway offers a highly-integrated solution in a compact 1U rackmount form factor, making it ideal for small to medium businesses, call centers, multi-location enterprises, and service providers .

High-Density Connectivity: The gateway features 48 FXS (Foreign Exchange Station) ports via RJ21 (50-pin) interface, allowing users to connect analog phones, fax machines, and PBX systems to VoIP networks . With support for up to 5KM maximum cabling length, it provides flexibility for large office deployments .

Superior Voice Quality: Equipped with advanced voice processing technologies, the DAG2500-48S delivers crystal-clear communications. It supports multiple voice codecs including G.711, G.729, G.723.1, G.726, iLBC, AMR, and optional Opus . Features such as Voice Activity Detection (VAD), Comfort Noise Generation (CNG), silence suppression, and G.168 echo cancellation with up to 128ms adaptive jitter buffer ensure optimal voice quality even in challenging network conditions .

Comprehensive Protocol Support: The gateway fully supports SIP v2.0 (RFC3261) protocol and is compatible with leading IMS/NGN platforms and SIP-based IP telephony systems . It works seamlessly with popular platforms including BroadSoft, Asterisk, FreeSWITCH, 3CX, Elastix, and Yeastar . Dual-stack IPv4/IPv6 support ensures future-proof network integration .

Advanced Fax Handling: With T.38 fax relay and pass-through support, the gateway ensures reliable fax transmission over IP networks, making it suitable for businesses that rely on fax communications .

Rich Telephony Features: The gateway offers a comprehensive suite of call features including call waiting, blind and attended transfer, various call forwarding options (busy, no reply, unconditional), call pickup, 3-way conference, do-not-disturb (DND), hotline services, message waiting indicator (MWI), and hunting groups .

Flexible Routing and Management: Powerful software features include digitmap configuration, flexible routing rules based on prefixes, and caller/called number manipulation . Management is facilitated through multiple interfaces including web-based GUI (HTTP/HTTPS), Telnet/SSH, SNMP, TR069, and cloud-based NMS . Auto provisioning via FTP/TFTP/HTTP/HTTPS simplifies large-scale deployments .

Network and Security Features: The gateway supports VLAN 802.1P/802.1Q tagging, Layer3 QoS with DiffServ, and NAT traversal (STUN, static/dynamic NAT) . Security is enhanced with TLS/SRTP encryption, web/Telnet access control lists, 802.1X authentication, and OpenVPN support .

Reliable Hardware Design: Built with an embedded operating system and market-proven hardware, the DAG2500-48S offers carrier-grade reliability . It features dual 10/100Mbps Ethernet ports, an RS232 console port, and optional dual power supply support for redundancy . Power consumption is rated at 75W typical, with operation in temperatures ranging from 0°C to 45°C .

Monitoring and Maintenance: Comprehensive monitoring tools include CDR (Call Detail Records), Syslog, ping/tracert testing, network capture, and GR909 outward line testing . The gateway also supports NTP for time synchronization and IVR for local maintenance .

The Dinstar DAG2500-48S provides a cost-effective, scalable, and reliable solution for organizations looking to bridge traditional analog communications with modern VoIP infrastructure, ensuring efficient and high-quality voice services for diverse business environments . Backed by a 1-year warranty, this gateway delivers exceptional value and long-term reliability for enterprise communication needs .