Error correction is the method by which modems verify that the information sent to them has been undamaged during the transfer. Error-correcting modems break up information into small packets, called frames. The sending modem attaches a checksum to each of these frames. The receiving modem checks whether the checksum matches the information sent. If not, the entire frame is resent. Though error correction may slow down data transfer on noisy lines, it does provide greater reliability. MNP2-4, as well as V.42, are error correction protocols. These protocols determine how the modems verify data. As with data compression protocols, for an error correction protocol to be used, it must be supported by both modems in the connection.
Articles in this section
- Embedded Serial Modem Family
- 33.6K/V.34 and Earlier Modem Support Files
- Linux/UNIX Information
- Beta Files
- How can I use one phone line for both voice and data?
- How do V.92 modem speeds compare to ISDN, ADSL and Cable speeds?
- Does the Model 3090A modem have lights or a speaker ?
- What makes a Zoom V.92 modem faster than V.90?
- Synchronous vs. Asynchronous Data Transfer
- IRQ Settings