Definition - What does Bell 103 mean?
Bell 103 modulation is used in amateur radio, shortwave radio and commercial applications. Its use of audio frequency and low signaling speed makes it compatible with unreliable narrowband links.
Techopedia explains Bell 103
Modems use protocols during data exchange. Bell 103 protocols are as follows:
- Microcom Networking Protocol (MNP) Levels 1-4: Deployed in the 1980s as an industry standard due to high demand, this protocol enables error-free and asynchronous data transmission.
- MNP Level 5: This protocol incorporates the first four MNP levels with a data compression algorithm.
- V.42 and V.42bis: These protocols are internationally recognized for data compression and error control.