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InterChange iQ 2000 and iQ 2000plus
D Glossary of Terms
This is a Glossary of Terms and Acronyms used throughout this User Guide.
Word/
Phrase/
Acronym Meaning
A
AIS
Alarm Indication Signal. A signalling condition of all ‘1’s on a Primary Rate
interface, indicating that the PRI equipment has failed.
API
Applications Programming Interface. The programming interface available
to a designer creating an application to use some service (such as a
management service).
ASCII
American Standard Code for Information Interchange.
B
BER
Bit error rate (or Ratio). Usually accounted in terms such as ‘1 in 10-3’,
‘1 in 10-5’.
BTNR
British Telecommunications Network Requirements
C
CCITT
International Telegraph and Telephone Consultative Committee. Now
renamed to ITU.
CLI
Command Line Interpreter. The task which runs the serial I/O interface and
interprets external management (API) messages into internal messaging
structures and vice versa.
CRC
Cyclic Redundancy Check.
CCS
Common Channel Signal.
D
DPNSS
DPNSS 1
Digital Private Network Signalling System Number 1. A protocol and set of
facilities, designed by British Telecom, Department of Trade and Industry and
PBX Manufactures for use between private digital PBX’s. Usually called just
DPNSS.
E
E1
A European 2.048 Mbit/s Primary Rate line.
ETSI
European Telecommunications Standards Institute.
G
GUI
Graphical User Interface.