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Issue 01 - 06/99 A5 - 3
Appendix 5 - Glossary
Autoanswer A feature which enables a modem to
automatically answer an incoming call.
Autobaud The ability of a modem to detect the
speed of the calling modem and adjust
its own speed accordingly.
Basic Rate The type of ISDN circuit that is
typically used for subscriber circuits. It
consists of two B channels and one D
channel = 144 Kbps of bidirectional
user communications.
Baud Rate The number of line signal transitions
per second. In a simple system where
each bit is represented by a single level,
it is the same as the number of bits per
second.
B Channel Bearer Channel. ISDN utilises
multiplexed channels that are
transmitted over the same physical
medium. The channels that typically
carry the user (subscriber's) voice/
data/video are referred to as Bearer
Channels.
BER Bit Error Ratio/Rate. A measure of
transmission quality. This is represented
as the number of bits received in error
during a transmission, divided by the
total number of bits transmitted in a
specific interval.
Appx5.PM6 17/06/99, 09:57 3