Managing a modem
A modem is a widely used network device. It is important for a device to correctly manage and control the use of modems in a network. Many modem manufacturers and various modem models exist. Even though all of them support the AT command set and are compliant with the industry standard, each type of modem differs somewhat on the implementations and command details.
The device provides the following functions for managing a modem:
Intercommunicating with the equipment from other vendors. The asynchronous serial interfaces of the participating parties are operating in flow mode interconnected through modems.
Providing rich debugging information for modem maintenance and monitoring.
Enabling the modem to obtain the caller number of the terminal.