This article provides general instructions on how to configure a router for high-quality, Spoke Phone VoIP calling.
It includes the following sections:
Please note that different routers have different settings. The instructions below are generally recommended configurations.
We strongly recommend you engage your IT support professional to correctly configure any network or WiFi changes.
- Your firewall/router should allow outgoing UDP and TCP (HTTPS) to the public internet from the devices that will be using Spoke Phone, and allow return traffic in response.
- Check to see if your router includes SIP Application Level Gateway (ALG) and/or Stateful Packet Inspection (SPI)
- Disable the SIP Application Level Gateway (ALG) function
- Disable the Stateful Packet Inspection (SPI) function
Most routers have both these functions turned ON by default.
If you do not disable them, these functions can interfere with voice traffic and
intermittently block incoming calls from ringing on your phone.
More information on this step and instructions for specific router models can be
Configuring QoS, port access, and whitelisting
If you have a router that allows you to manually configure QoS and prioritize traffic to specific IP addresses and port ranges, use the following configuration:
If your router allows you to manually allocate a specific amount of bandwidth
to the prioritized traffic, allocate 100kb/s per expected concurrent call.
As additional traffic on your network impacts audio quality, we suggest opening ports in your router/firewall/antivirus software to the following:
TCP: 443, 3478, 5349, 10194
UDP: from 10000 to 20000
Whitelist the following URL's:
|URL's to whitelist|
Please note that the * covers all subdomains.
RTP Media (UDP) Traffic
This is the media channel and the most important to have committed bandwidth and QoS.
Once you have an appropriate router, you can set up QoS rules from your router's interface using the media server IP addresses below. Make sure that you have set all the applicable addresses below that correspond to your location.
Spoke connects to these IP addresses using UDP, port range 10,000-20,000.
- Spoke Phone WiFi/network configuration: Technical requirements checklist
- Overview: WiFi and network requirements for good call quality
- Setting Up a QoS: Ubiquiti UniFi for Spoke Phone