GarrettCom H80P Manual De Usuario

Magnum H80B and H80P Personal Hubs  User Guide (07/95)

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Preamble Regeneration: Personal Hubs add bits to the preamble so

that the output packet contains a minimum 64-bit preamble per the

Ethernet standard.

Collisions:  When carrier is detected simultaneously on multiple

ports, a jam pattern is generated on each port to create a collision

condition.  When a collision signal from one port is detected, it

generates a jam pattern to other ports.

Fragment Extension: Personal Hubs will automatically add bits to a

received data packet of less than 96 bits (a "fragment") so that the

forwarded packet is 96 bits long.