Lesson Summary
The following points summarize the main elements of this lesson:
- Modems convert parallel digital data to and from serial analog data.
- Modem speeds are based on bps (bits per second).
- CCITT (now ITU-T) establishes standards for modem communication.
- AT commands are used to manually communicate with and test a modem.
- Modems can be installed internally or externally.
- The primary modem problem is IRQ conflicts.