How Should I Set Up a VoIP Network With Dual ISPs?

The best practice is to allocate one ISP for VoIP traffic and another for data traffic. This approach helps maintain voice quality by preventing congestion caused by general data usage.

To achieve high-quality and secure VoIP calls while minimizing network disruptions, configure your network to route VoIP traffic and devices through the VoIP ISP while directing data traffic and devices to the other ISP.

If using one ISP for both VoIP and data traffic:

  1. Enable QoS (Quality of Service) on your router to prioritize VoIP traffic.
  2. Allocate the bandwidth specifically for VoIP to prevent interference.
  3. Use VLANs to separate VoIP and data traffic for better performance.