Agilent Technologies aurora Duet, User Manual

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Glossary
Issue 2 - 05/00 Glossary - 3
Clear Cause
When a call is cleared a cause code is
returned indicating the reason for the
call being cleared.
CLID
Calling Line Identity. This is the
number that belongs to the calling
party.
Clock
An electronically generated periodic
signal which is used to provide a timing
reference to the transmitted data or
other circuit functions.
CO
Central Office. Refers to a central
switching or control centre belonging to
a Postal, Telegraph and Telephone.
CODEC
Coder / Decoder.
COL
Connected Line Number. This is the
number of the called party, which may
be different from the CPN dialled if the
call has been redirected.
CPN
Called Party Number. This is the
number that is dialled by the calling
party to make a call.
D Bit
Delivery Confirmation bit or
acknowledgement can be Local or End
to End.
Data
A term loosely used to describe any
information which is presented in
digital form whether it is text, voice or
video.