Terminology And Acronyms - Multitech MTCBA-C-IP-N12 Reference Manual

Terminology and Acronyms

This is an alphabetical list of terms and acronyms used throughout this document and the CDMA cellular industry.
Second Generation. All digital cellular systems developed to replace the first analog cellular systems. (GSM
2G
and CDMA).
Third Generation. Next generation digital cellular systems designed to have high-speed data access and
3G
higher voice capacity (CDMA & CDMA2000).
Advanced Forward Link Trilateration. A type of handset-based position location technology. GPS satellites
AFLT
are not used to determine location. To determine location using AFLT, the phone takes measurements of
signals from nearby cellular base stations (towers) and reports the time/distance readings back to the
network, which are then used to triangulate an approximate location of the handset. In general, at least three
surrounding base stations are required to get an optimal position fix.
Cell Broadcast Message. An SMS message that is broadcast to all mobiles on the network.
CBM
Code Division Multiple Access. CDMA is a spread spectrum, digital wireless modulation scheme for cellular
CDMA
communications systems. It has approximately 3 times the voice capacity of GSM networks. See IS-95, IS-
95B, IS-2000.
cdmaOne is a brand name, trademarked and reserved for the exclusive use of the CDMA Development
cdmaONE
Group. cdmaOne describes a complete wireless system that incorporates the IS-95 CDMA air interface, the
ANSI-41 network standard for switch interconnection and many other standards that make up a complete
wireless system.
cdma2000 is a third generation (3G) wireless system. It contains a significant increase in voice capacity and
cdma2000
high-speed data rates. It is backward compatible with IS-95B and IS-95A.
Data Communications Equipment. This is the modem in the traditional serial communication paradigm of a
DCE
computer connected via two modems to another computer.
Data Terminal Equipment. This is the computer in the traditional serial communication paradigm of a
DTE
computer connected via two modems to another computer.
Dual Tone Multi-Frequency: A pre-defined set of tones sent over the air when keys are pressed on the
DTMF
keypad.
The audio path (microphone & speaker) that connects to a traditional hand held telephone receiver, usually
Handset (Path)
dual balanced electrical lines.
The audio path (microphone & speaker) that connects to an earpiece with a microphone, usually single
Headset (Path)
electrical lines.
International Mobile Station IS. This is an international 15 digital phone number that uniquely identifies a
IMSI
mobile. IMSI=MCC + MNC + MIN.
Internet Over The Air.
IOTA
The first CDMA standard published by Qualcomm in 1993. It is a TIA standard for North American cellular
IS-95
systems based on CDMA. It is widely deployed in North America and Asia.
A CDMA standard with improved voice quality. IS-95A defines what generally is known as cdmaOne, which
IS-95A
supports voice and 14.4 Kbps data rates. This is a worldwide standard.
This CDMA standard contains Medium Data Rate capabilities and bug fixes for system access failures. It is
IS-95B
considered a 2.5G system. It supports data rates up to 115 Kbps.
The first 3G CDMA standard based on IS-95B. It contains a significant increase in voice capacity and high-
IS-2000
speed data rates. It is backward compatible with IS-95B and IS-95A.
TIA/EIA/IS-707 describes data services available on wideband spread spectrum systems. It is organized into
IS-707
a series of related recommendations, some of which address functions common to all CDMA data services
and others that describe a specific data service.
:
Interworking Function. A process that acts as a gateway or interface between two or more communication
IWF
components. For example, an IWF is used to interface wireless CDMA networks and wire line PSTN or
packet-data networks.
Link Access Procedure for Modems. An error control protocol defined in the ITU-T recommendations V.42.
LAPM:
Like the MNP protocols, LAPM uses cyclic redundancy checking (CRC) and retransmission of corrupted
data (ARQ) to ensure data reliability.
Mobile Country Code. A pre-defined 30-digital number that represents a country in the IMSI.
MCC
Multi-Tech Systems, Inc. CDMA Wireless AT Commands (PN S000294J)
Chapter 1 – Introduction
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