In answer mode only one incoming call may be accepted at a time. Other nodes attempting to access the local modem will receive a busy signal until the connection is terminated. (Answer mode has no difficulty supporting multiple remote connections to one local port, as blocking multiple incoming calls is just a modem function. Originate mode, on the other hand will only support a single local port to remote port connection). The disable parameter disables the COD utility for this interface. Choosing any other mode will enable the COD utility.