data protocol

data protocol: Sets up and removes error correction. Standard error correction allows the modems to negotiate the error correction method that is used for the connection, such as V.42, MNP 4, MNP 3, MNP 2, or none. Forced error correction requires that V.42 be used for the connection. When V.42 cannot be used, it terminates the connection.

Sometimes a modem with error correction may take too long to negotiate with a service providers modem, and the service provider hangs up. Disabling error correction may then allow an unbroken connection. Removing error correction may make your connection less reliable.