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Physical Layer ...
- Media Independent
- Interface between equipment and link
- Control, clock and ground signals
- Shape and size of connectors
Put Connectors Diagram here
- Examples
- RS 232 (20 Kbps, 10 feet)
- RS 449 (2 Mbps, 60 feet)
- X.21 (digital signalling)
Sridhar Iyer
2001-01-08