When you first visit this page the system carries out an upload and download speed test relating to your broadband. The results are displayed below.
The test is carried out by uploading and downloading data to Birchills Telecoms servers and measuring the achieved speeds. This means that it as accurate as possible for real world VoIP communication. If you run the test repeatedly then you will see a great variation in speed depending upon many factors including how busy your local circuits are.
BROADBAND AND VoIP
The bandwidth required for a modern VoIP phone system is generally limited by the upload speed. As a rule of thumb you should allow at least 0.1Mbps per active conversation. So if the upload speed is indicated as 5Mbps then you could run 50 simultaneous active conversations or a large call centre.