Proxim 7920, 7921 manual Glossary

D. Glossary

10BASE-T Cross-over Cable — A standard 10BASE-T Ethernet cable with pins 1 & 3 and 2 & 6 crossed to allow two Ethernet devices with the same pin specification to communicate directly with one another.

Access Point — An internetworking device that seamlessly connects wired and wireless networks together.

Bandwidth — The size (in Hertz) of the frequency range that a signal transmission occupies. Typical narrow band signals oc- cupy a 25 KHz bandwidth. The RangeLAN2 signal occupies a 1 MHz bandwidth.

Channel — In RangeLAN2 networks, the channel refers to the frequency hopping sequence the card follows.

CSMA/CA — (Carrier Sense Multiple Access/Collision Avoid- ance) — CSMA is a protocol in which each node senses whether or not a channel is in use before attempting to transmit informa- tion. CA is an optimization by which channel time is reserved to avoid collisions.

DCE — (Data Communication Equipment) — A device, such as a modem, which connects to a DTE with a serial cable, that allows a DTE to send and receive data with remote locations.

DTE — (Data Terminal Equipment) — A device, such as a computer or dumb terminal, which connects to a DCE from its serial port in order to send and receive data with remote locations.

Download Image — A software file that is used to upgrade the software code running on the Ethernet Adapter.

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