Telenetics 2185 manual Glossary

Glossary

This glossary defines terms used in the 2185 Operator's Guide.

ACTIVE	LED indicator lamp that illuminates when the
	subchannel indicated gains access to the main
	channel.
ALARM	LED indicator lamp that illuminates when the anti-
	streaming timer automatically disables a
	subchannel.
Anti-Streaming	Scheme that protects the network from becoming
	jammed should one of the subchannel devices fail.
	If the selected subchannel remains active for longer
	than the anti-streaming time-out period it's
	automatically disabled and its alarm LED indicator
	lights up.
Anti-Streaming	Nominally 25 seconds in the 2185.
Time-out
Cascading	The 2185 may be cascaded to increase the number
	of channels that can be connected to the main
	channel controller. Cascading is accomplished by
	connecting the main channel of one unit to a
	subchannel of another unit. The cascaded units may
	be located at one site or the units may be located at
	sites remote from each other, and be connected
	through modems.
Co-Located Terminals	Using the 2185, any combination of subchannel
	DTE devices and subchannel DCE devices is
	possible. For example, local subchannel terminals
	can be co-located with modems that communicate
	with devices at remote sites. Co-location of ports
	and modems can be performed in both port-sharing
	and modem-sharing operation modes.
Contention	In communications, the case where multiple users
	vie for the right to use a transmission channel on a
	first-come first-serve basis, whether a PBX circuit, a
	computer port, or a time slot within a multiplexed
	facility.

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