The local tel communications speed test is a free tool that allows you to check your Internet connection speed at home or office. This test helps you identify whether your ISP (Internet Service Provider) has sufficient bandwidth to support your data transfer requirements.
This test is performed using a special device called modem. The device connects to your router via Ethernet cable. Once connected, the device sends out a signal to the modem and then receives a reply from the modem.
The difference between the two signals is measured and converted into Mbps.