The recurring service charge would be the largest expense. Most leased lines are rated by distance. POTS is being used today to send financial data. Like leased lines, POTS requires hardware and service for each trading partner. The primary disadvantage to sending data via POTS lines is the inability to manage the network and hardware.
Software options are limited.
Business transactions typically call for a more stable method. In addition, some requirements are not possible due to the limitations of the telephone network. These are the same requirements mentioned with leased lines. Some examples include monitoring capabilities and error reporting. It is recommended that frame relay be used for high-volume connectivity.