What is the required internet speed? Laura May 01, 2020 22:58 Updated Follow We recommend that you have 1Mb upload and 1 Mb Download speed minimum per user using your internet connection. Related articles What are the system requirements to use PhoneBurner? Help with troubleshooting microphone issues with Softphone Is SMS text messaging available? Why are their restrictions on dialing times? Phoneburner Settings:General Comments 0 comments Please sign in to leave a comment.