TrendCommunications AuroraPlus, User Manual, Page: 193 / 226

Issue 5 - 04/01 A2-1
Glossary and Acronyms
Glossary and Acronyms
Symbols
1TR6
1TR6 is the national protocol for the ISDN
environment in Germany. It is also often used in
private networks utilising equipment of German
origin.
2B+D
Two B-channels and one D-channel, an alternative
way of referring to the Basic Rate Interface.
A
A-law
Companding technique for Pulse Code Modulation,
used in Europe.
Address
The digits that identify the origin and/or the
destination of a data communications message.
ARCOFI
Audio ring codec filter.
ASCII
American Standard Code for Information
Interchange. The US version of the ISO 7-bit data
code. Usually transmitted in 8-bit characters, the
additional bit being an odd or even parity bit.
Asynchronous
The description used for a communications channel
capable of transmitting data but not timing.
Aurora Expert
A protocol analysis package that can be used in
conjunction with the
Aurora
family of ISDN testers.
B
B1
The first bearer channel on a BRI connection.
B2
The second bearer channel on a BRI connection.
BX
A convention to indicate either B-channel (B1 or B2).
A2
App02.P65 01/05/01, 09:19 1