synchronous : Java Glossary
- Serious high speed data transfers use synchronous modems. These send whole messages
at a time. This way the overhead of start and stop bits can be dispensed with. Instead
a few synchronizing characters are glued to the front of each message to help
synchronize the clocks of the two modems. In addition synchronizing characters or
special bit patterns are inserted in the middle of messages from time to time. They use
patterns that could never represent data.