Speed equals productivity.
Using the best of the two previous standards, V.90 technology allows modems to receive data at up to 56Kbps over regular phone lines. Upstream data, which is typically less speed sensitive, travels at the standard V.34 rate. Note that current FCC regulations restrict transmissions to a maximum of 53Kbps. In addition, there are a couple of other factors that can affect the connection speed. The V.90 modems will automatically adjust transmission speed as required.