Modems (modulator demodulators) are small box like devices used in dial up network connections. Modems translate data from binary to analog and vice versa. Standard model modems handle data at 56000 bits per second (56 kbps), but this speed usually slows down to 33kbps.
Broadband modems are a bit more advanced than ‘traditional’ modems (analog modems). Usually as a part of DSL or cable net services which utilize signals to achieve better networking speeds. The performance of the modem also depends on the shared cable lines usage in the street. These are also known as digital modems.
Mobile phones are also able to establish connectivity nowadays, they accomplish this through cellular modems.