Glossary

Acronyms

AMPS

Advanced Mobile Phone System

API ARN

Original name given to the analog voice cellular telephone system. The standard for cellular telephone service in North and South America plus some Pacific rim countries. CDPD uses the same cells and RF channels as AMPS.

Application Programming Interface

Authentication Random Number

 

One of two numbers used as part of the CDPD

 

authentication procedure. See also, ASN.

ASCII

American Standard Code for Information Interchange

 

An 8-bit data code used by most PCs and many telemetry

 

devices.

ASN

Authentication Sequential Number

 

One of two numbers used as part of the CDPD

 

authentication procedure. See also, ARN.

AT command

A set of modem commands, preceded by an AT,

 

originally developed by Hayes, Inc. for their modems.

 

The structure, but not the specific commands that vary

 

greatly from manufacturer to manufacturer, is a de facto

 

modem industry standard.

BLER

Block Error Rate

 

A measure of the percentage of data blocks that could not

 

be fully corrected by the FEC scheme.

bps

bits per second

 

The actual data speed over the transmission medium. It is

 

not necessarily equivalent to baud. See also, baud.

PN1197-00 Revision 1.0

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Sierra Wireless DART 200 CDPD Modem manual Glossary, Acronyms, Bps