Telenetics 2185 - Manual (Page 57)

Glossary-1
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
Time-out Nominally 25 seconds in the 2185.
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.