Network Configuration: Setting Up a QoS

What is QoS and why does it matter?

Quality of Service (QoS) is the set of settings that can be applied to a router in order to prioritize voice traffic over lower priority traffic on your network.

It matters as any instability in your network may cause call drops, lower call quality, and interruptions during the call.

Setting up QoS

To set up QoS you need to have a router that supports these specific settings. Otherwise, you can try one of the below solutions:

• Alternative QoS Setup: Ubiquiti UniFi for CrazyCall
• Alternative QoS Setup: Ubiquiti EdgeRouter Pro for CrazyCall
• Alternative QoS Setup: Cisco Meraki for CrazyCall

If you have a router that supports QoS you can set it up directly from its interface using the following IP addresses.

NOTE: Make sure to set up all of the IP addresses regarding your location.

Site	IP range
Global:	13.248.142.203/32
Europe: Frankfurt	52.59.238.8/29
Europe: Poland	46.28.243.96/29
Europe: Ireland	52.209.63.240/29
Europe: Germany	52.59.238.8/29
Asia-Pacific: Singapore	52.220.191.252/30
Asia-Pacific: Sydney	52.65.191.152/30
Asia-Pacific: Mumbai	52.66.194.216/30
America: North Carolina	18.228.88.9/32
America:  North Virginia	52.205.249.160/29
America: Sao-Paulo	18.228.88.9/32

Keep in mind that all packets that come in and out of CrazyCall so carry DSCP tag with the value 46 (EF 101110) which you can use to set up the QoS in order to give priority to voice packets over general traffic. Also, please be aware that there is a currently occurring issue on Windows in regards to DSCP. It might be solved by the time you’re reading this. Here, you can find more information and future updates on that issue.

After you’re done with the above, you’re all set up and ready to have top-quality calls!