Dinstar DAG1000-4O 4 Port FXO Analog VoIP Gateway – Compact SIP PSTN Integration Solution

Product Overview

The Dinstar DAG1000-4O 4 Port FXO Analog VoIP Gateway is a compact and cost-effective solution designed to connect PSTN lines and analog PBX systems with modern VoIP networks.

Equipped with 4 FXO ports, this gateway enables seamless communication between traditional telephony systems and IP-based platforms, making it ideal for small businesses, branch offices, and SOHO environments.

With support for SIP protocol, T.38 fax, and flexible routing, the DAG1000-4O provides an easy and reliable way to transition from legacy telecom infrastructure to VoIP.

Key Features

1. 4 FXO Ports for PSTN Connectivity

• Supports 4 analog trunk (FXO) ports

• Connects PSTN lines or analog PBX systems to VoIP

• Ideal for small-scale deployments

2. Seamless SIP VoIP Integration

• Fully compliant with SIP (RFC 3261)

• Compatible with IP PBX, softswitches, and SIP servers

• Supports IMS/NGN platforms

3. High-Quality Voice & Codecs

• Supports codecs: G.711, G.729, G.723, G.726

• Built-in echo cancellation (G.168) and jitter buffer

• Ensures stable and clear voice communication

4. Fax over IP (T.38 Support)

• Supports T.38 and pass-through fax

• Reliable fax transmission over IP networks

• Suitable for business environments

5. Flexible Call Routing & Dial Plan

• Advanced digit manipulation and routing rules

• Caller ID control and prefix-based routing

• Load balancing and call handling features

6. Strong Security & Encryption

• Supports TLS and SRTP encryption

• NAT traversal and firewall support

• Secure VoIP communication environment

7. Easy Management & Provisioning

• User-friendly web-based GUI

• Remote management via SNMP & TR-069

• Auto provisioning and firmware upgrade support

8. Reliable Network & Interfaces

• 1 × WAN + 2 × LAN Ethernet ports

• Supports VLAN, QoS, IPv4/IPv6

• Flexible deployment in business networks

9. Business Continuity & Failover

• Automatic fallback to PSTN when VoIP fails

• Ensures uninterrupted communication

• Designed for stable 24/7 operation 

Technical Specifications

• Model: DAG1000-4O

• Ports: 4 × FXO (RJ11)

• Protocol: SIP v2.0 (RFC 3261)

• Network: 1 × WAN, 2 × LAN (RJ45)

• Voice Codecs: G.711, G.729, G.723, G.726

• Fax: T.38 / Pass-through

• Security: TLS, SRTP

• Management: Web GUI, SNMP, TR-069

• Power Supply: 100–240V AC

• Mounting: Desktop

• Application: PSTN to VoIP Gateway

  Why Choose Dinstar DAG1000-4O?

  ✔ Cost-effective VoIP gateway for small deployments
  ✔ Connect PSTN lines to IP PBX systems easily
  ✔ Preserve existing analog telecom infrastructure
  ✔ Flexible routing and advanced VoIP features
  ✔ Reliable and easy to deploy

  This gateway is ideal for businesses looking to modernize communication systems without replacing their existing analog lines.

  Best Use Cases

  • Small & medium businesses (SMEs)

  • Branch offices and remote locations

  • Call centers and outbound dialing

  • Hybrid telecom environments (Analog + VoIP)

  ???? Upgrade your telecom system with the Dinstar DAG1000-4O FXO VoIP Gateway and seamlessly connect traditional PSTN lines to modern VoIP networks.