Vampire tap
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A vampire tap (also called a piercing tap) is a device for physically connecting a station (e.g. a computer or printer) to a network that uses 10BASE5 cabling. This device clamps onto and "bites" into the cable (hence the vampire name), forcing a spike through a hole drilled through the outer shielding to contact the inner conductor while other spikes bite into the outer conductor. From the vampire tap, a short cable called an AUI (Attachment Unit Interface) is connected directly from the tap to the network card in the PC.
Vampire taps allow new connections to be made on a given physical cable while the cable is in use. This allows administrators to expand bus-topology network sections without interrupting communications. Without a vampire tap, the cable has to be cut and connectors have to be attached to both ends.
See also
- Network tap
- Insulation-displacement connector, another insulation-piercing system
External links
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