TrendCommunications AuroraPlus, User Manual, Page: 195 / 226

Issue 5 - 04/01 A2-3
Glossary and Acronyms
Called party
The subaddress of the called party. This is
subaddress
included in the outgoing setup message when en
(CPN-SUB)
bloc dialling is used.
Calling party
The subaddress, if any, of the calling party.
subaddress
(CLI-SUB)
CCITT
The former name of the ITU-T (from French
acronym).
Central Office (CO)
A US term for a telephone exchange.
Channel
A path (either physical or logical) for transmission of
information.
Clear Cause
A code indicating the reason why a call has cleared.
CLI
Calling Line Identity. The number belonging to the
caller.
Closed User
In an X.25 network, a group of subscribers that are
Group (CUG)
configured such that calls to and from the group
are restricted.
CPN
Called Party Number. The number dialled by the
calling party.
D
D Channel
An ISDN channel that supports signalling or packet
data at speeds of 16 kbps (BRI) or 64 kbps (PRI).
Data
Digital information, which may be text, voice or
video.
Decode
This is ISDN signalling information from the D
Channel. Decode can be captured in
Aurora Plus
’s
memory using the Tracer feature.
Digital
An exchange that switches digital signals by
Exchange
means of digital switching.
App02.P65 01/05/01, 09:19 3