Shenzhen, China – July 6, 2026 – OpenVox, a leading global provider of VoIP gateways, IP-PBX, and communication solutions, today officially announced the launch of its all-new DGW-300X Series high-performance digital trunk VoIP gateways. The series includes three models—DGW-3001, DGW-3002, and DGW-3004—designed to provide businesses of all sizes with an ideal bridge for seamless migration from legacy PSTN/ISDN networks to IP-based communication systems.
As a revolutionary upgrade to OpenVox's digital gateway product line, the DGW-3000 Series delivers high density, exceptional reliability, and flexible configuration options. All models feature a standard 19-inch 1U rack-mountable form factor, measuring 440mm x 318mm x 44.4mm, ensuring easy integration into various network environments.
Flexible Scalability for Deployment at Any Scale
The DGW-300X Series offers flexible choices ranging from 1 to 4 E1/T1 ports to address diverse requirements—from small and medium-sized enterprises to large-scale call centers. All three models support software-selectable E1/T1/PRI interfaces, with the following configurations:
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DGW-3001: Equipped with 1 E1/T1 port and 1 failover bypass port, supporting up to 30 concurrent calls.
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DGW-3002: Equipped with 2 E1/T1 ports and 2 failover bypass ports, supporting up to 60 concurrent calls.
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DGW-3004: Equipped with 4 E1/T1 ports and 4 failover bypass ports, supporting up to 120 concurrent calls.
All models come standard with dual redundant power supplies (AC or DC input optional) across all models, alongside 2 Gigabit RJ45 Ethernet ports and 1 Gigabit SFP fiber port, ensuring robust network connectivity and flexibility.
Superior Performance for Seamless Convergence
The DGW-300X Series gateways are engineered to efficiently interconnect traditional telephony lines with VoIP networks, which offer comprehensive support for PRI, SS7, and R2 signaling protocols, with compatibility for up to 24 countries' standard R2 signaling variants.
On the voice processing front, the gateways support an extensive range of codecs, including G.711A/U, G.723.1, G.729A, iLBC, OPUS, AMR, and AMR-WB, ensuring superior voice quality under various network conditions. They also support T.38 fax relay and pass-through modes to meet enterprise faxing requirements.
Intuitive Management and Intelligent Operations
The OpenVox DGW-300X Series features an intuitive web-based graphical management interface, enabling users to quickly complete configuration, maintenance, and service customization. Key advanced features include:
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Open API Interfaces – facilitating secondary development and system integration.
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Auto Provisioning – simplifying large-scale deployments.
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Rich Networking Capabilities – including IPv4/IPv6, static IP/DHCP, QoS, DNS SRV fast switching, and more.
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Broad Platform Compatibility – seamlessly interoperating with Asterisk, Issabel, 3CX, FreeSWITCH, VOS, BroadSoft, and other mainstream IP-PBX platforms.
Carrier-Grade Reliability: Standard Redundant Power Supplies and Failover Bypass
The DGW-300X Series delivers a solid foundation of communications reliability through two layers of protection: standard redundant power supplies across all models and built-in failover bypass ports. On the power front, the dual-redundant power supply design effectively eliminates the risk of device downtime caused by a single point of power failure. On the network front, the failover bypass ports automatically switch traffic to backup lines in the event of power loss or system anomalies, ensuring maximum communication continuity.
Additionally, it supports web-based background management, SNMP/TR-069/TR-369, detailed logging, and web-based network packet capture, providing administrators with powerful diagnostic and troubleshooting tools.
About OpenVox
OpenVox Communication Co.,Ltd., founded in Shenzhen in 2002, is a global leading provider of the VoIP Gateways, IPPBX and open source Asterisk® Telephony Cards with excellent quality and experience. We have been devoted to serving the Small and Medium Business and Large Enterprises with superior quality products that lower communication costs, increase system flexibility and enhance productivity in building IPPBX, Call Center, IVR and Unified Communications Platform.
The DGW-300X Series are now available worldwide through OpenVox’s global distribution and partner network. For more information about the products, please visit this page.
To request a quote, demo, or technical consultation, contact OpenVox sales at This email address is being protected from spambots. You need JavaScript enabled to view it., or reach out to your local authorized partner. We look forward to your inquiry!