1. Introduction
The Dinstar DAG2000-16S is a multi-functional analog VoIP gateway designed to provide seamless connectivity between IP-based telephony networks and traditional analog devices such as telephones (POTS), fax machines, and PBX systems. This device offers a cost-effective and straightforward VoIP solution for small businesses, home offices, remote offices, and branch locations. Utilizing the standard SIP protocol, it ensures compatibility with leading IMS/NGN platforms, IPPBX systems, and various SIP servers.
This manual provides essential information for the proper setup, operation, and maintenance of your DAG2000-16S gateway.
2. Product Overview
2.1 Key Features
- 16 FXS ports for connecting analog phones, fax machines, or PBX systems.
- Supports standard SIP protocol for broad compatibility.
- Fax over IP capabilities.
- Flexible dial plan configuration.
- Four RJ-45 10/100Mbps Ethernet interfaces.
2.2 Physical Components
The DAG2000-16S gateway features a robust design with clearly labeled ports and indicators.

Figure 1: Front Panel. This image displays the front of the Dinstar DAG2000-16S gateway, featuring 16 RJ-11 FXS ports for analog phone connections, along with LED indicators for power and run status. The Dinstar brand logo and model number DAG2000-16S are also visible.

Figure 2: Rear Panel. This image shows the rear panel of the Dinstar DAG2000-16S gateway. It includes the power switch (ON/OFF), AC power input (100-240VAC, 50-60Hz), four RJ-45 Ethernet ports labeled LAN1, LAN2, LAN3, and CONSOLE, and a reset button.
3. Setup
3.1 Unboxing and Inspection
Carefully remove the DAG2000-16S gateway from its packaging. Inspect the device for any signs of damage during transit. Ensure all components listed in the packing slip are present.
3.2 Physical Connections
- Power Connection: Connect the provided AC power cord to the power input on the rear panel of the gateway and then to a standard electrical outlet. Ensure the power switch is in the OFF position before connecting.
- Network Connection: Connect an Ethernet cable from your network switch or router to one of the LAN ports (LAN1, LAN2, or LAN3) on the rear panel. The CONSOLE port is typically used for command-line interface access.
- Analog Device Connection: Connect your analog telephones, fax machines, or PBX system to the FXS ports (RJ-11) on the front panel of the gateway. Each port corresponds to a specific line.
- Power On: Flip the power switch on the rear panel to the ON position. Observe the Power and Run LEDs on the front panel. The Power LED should illuminate steadily, and the Run LED should blink, indicating normal operation.
3.3 Initial Configuration
Initial configuration of the DAG2000-16S is typically performed via a web-based graphical user interface (GUI). Refer to the separate Dinstar DAG2000-16S Configuration Guide for detailed instructions on accessing the web interface, setting up network parameters, SIP accounts, and dial plans.
4. Operating Instructions
Once the DAG2000-16S gateway is physically connected and configured, it will function as an interface between your analog devices and the VoIP network. Analog phones connected to the FXS ports will be able to make and receive calls via the configured SIP trunks.
- Making Calls: Lift the handset of the analog phone connected to an FXS port. You should hear a dial tone. Dial the desired number according to your configured dial plan.
- Receiving Calls: When an incoming call arrives, the connected analog phone will ring. Lift the handset to answer the call.
- Fax Operation: Connect a fax machine to an FXS port. Ensure the fax over IP (T.38) settings are correctly configured in the gateway's web interface for reliable fax transmission.
5. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your DAG2000-16S gateway.
- Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth for cleaning. Do not use liquid cleaners directly on the device.
- Firmware Updates: Periodically check the Dinstar official website for firmware updates. Keeping the firmware up-to-date can provide new features, performance improvements, and security enhancements. Follow the provided instructions carefully when performing firmware upgrades.
- Environmental Conditions: Ensure the gateway is operated within its specified temperature and humidity ranges. Avoid placing it in direct sunlight or near heat sources.
6. Troubleshooting
If you encounter issues with your DAG2000-16S gateway, consider the following troubleshooting steps:
- No Power: Check the power cord connection and ensure the power switch is ON. Verify the power outlet is functional.
- No Dial Tone: Ensure the analog phone is correctly connected to an FXS port. Verify the gateway has network connectivity and is registered with the SIP server. Check the FXS port status in the web interface.
- Cannot Make/Receive Calls: Confirm network connectivity. Check SIP registration status. Verify dial plan configurations. Ensure firewall rules are not blocking VoIP traffic.
- Poor Call Quality: Check network bandwidth and latency. Ensure Quality of Service (QoS) settings are properly configured on your network and the gateway.
- Device Unresponsive: Try restarting the device by cycling the power switch. If the issue persists, use the reset button on the rear panel (a paperclip may be needed) to restore factory default settings. Warning: Resetting to factory defaults will erase all configurations.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | DAG2000-16S |
| Phone Interface | 16 FXS, RJ-11 |
| Ethernet Interface | 4* RJ-45 10/100Mbps |
| Material | Plastic |
| Item Weight | 7.73 pounds (3.52 Kilograms) |
| Package Dimensions | 21 x 12 x 4 inches |
| Compatible Devices | Personal Computer (for configuration) |
| UPC | 709257384191 |
| Manufacturer | DINSTAR |
| Date First Available | March 28, 2017 |
8. Warranty and Support
For warranty information, technical support, or further assistance, please contact Dinstar customer service or visit the official Dinstar website. You can also visit the Dinstar Store on Amazon for product information and resources.





