How does the speed of a 56k leased line differ from the speed of a 56k modem connection?
Data on a 56k leased line always travels at an exact speed of 56,000 bps in both directions. Despite the name, 56k modems are restricted, in the best case, to speeds of 53k bps on the receive side, and 33k bps on the transmit side. In practice, the actual speed of a modem depends heavily on line conditions. In some cases, 56k modems will be unable to connect at speeds above 26,400 bps. This is especially true in rural areas, in areas with older phone equipment, and in newer housing developments. In contrast, a 56k leased line always operates at a rate of 56,000 bps in both directions.
