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Google Voice Connectivity Requirements

High-quality audio calls with Google Voice require a properly configured network. Google Voice connectivity can be improved by following these simple steps. Verify that your network is ready for voice traffic:

  1. Make sure your network has enough bandwidth to handle all concurrent calls.
  2. Open the outbound ports to allow voice traffic to flow to and from your network.
  3. Allow list the URIs used by Voice for web traffic, APIs, feedback reports, logs upload, and connectivity setup.

Voice network

Outbound ports need to allow voice traffic for Google Voice Connectivity

Set up your network so the following ports allow media traffic to flow to and from your organization, this will enable Google Voice Connectivity:

  • Outbound UDP ports range: 19302–19309
  • Outbound UDP ports range: 26500–26501
  • Outbound TCP port 443

Voice UDP ports ranges use the Chrome WebRTC UDP Ports Setting.

Bandwidth requirements per site for Google Voice Connectivity

A site’s network should have enough bandwidth for all concurrent voice calls, plus extra bandwidth for other needs.

To calculate the optimal bandwidth requirement range, multiply the amount of bandwidth required for each voice call by the peak number of concurrent participants.

Average bandwidth per participant * peak number of concurrent participants = Minimum site bandwidth requirements

Bandwidth recommendation per participant

  • Minimum requirement: 32 kbps (to account for actual media and RTCP signaling overhead)
  • (Recommended) Good quality: Above 50 kbps (to account for actual media and RTCP signaling overhead)
  • Calls between two Google Voice clients will attempt to adapt to lower bitrates where possible

Ensuring the bandwidth requirement is met will improve Google Voice Connectivity.

Allow list URIs

Make sure there’s full network access to core Google services. If your network has restrictions or filtering policies for users, make sure there’s network access to the following URI patterns.

These patterns are used by Voice for web traffic, APIs, feedback reports, logs upload, and connectivity setup.

  • https://*.google.com/*
  • https://*.googleapis.com/*
  • https://*.gstatic.com/*
  • https://*.googleusercontent.com/*
  • https://*.telephony.goog/*

Do you want a free Google Voice trial? Learn more at https://appsevents.com/google-voice/.

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