gsm acronyms

8/13/2019 GSM Acronyms

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GSM - Useful Acronyms

The following is a compiled list of mobile terms and acronyms taken from a GSMAssociation supported publication.

1G

The first generation of analogue mobile phone technologies including AMPS, TACS andMT

2GThe second generation of digital mobile phone technologies including GSM, C!MA "S#$%and !#AMPS "S#&'(

2.5G

The enhancement of GSM which includes technologies such as GP)S

3GThe third generation of mobile phone technologies co*ered by the "T+ "MT#--- family

3GPPThe 'rd Generation Partnership Proect, a grouping of international standards bodies,operators and *endors with the responsibility of standardising the /C!MA basedmembers of the "MT#--- family

3GPP2The counterpart of 'GPP with responsibility for standardising the C!MA---#based

members of the "MT#--- family. 'GPP is spearheaded by AS"

8PSK0ctantal Phase Shift 1eying

A5/1/2/3/8X2ncryption algorithms for GSM networks

AAL

ATM Adaptation 3ayer

ABRA*ailable 4it )ate

A-!s"nterface between the 4SC and 4TS in a GSM network

ABAccess 4urst5 used for random access and characterised by a longer guard period to

allow for burst transmission from a MS that does not know the correct timing ad*ancewhen first contacting a network

A"#$

Appro*als Committee for Terminal 26uipment


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A"#SAd*anced Communications Technologies and Ser*ices . a 2uropean technology initiati*e

A"UAntenna Combining +nit

A%P"MAdapti*e !ifferential Pulse Code Modulation5 a form of *oice compression that typically

uses 'kbit7s

A&"Automatic 8re6uency Control

AG"'Access Grant Channel5 downlink only, 4TS allocates a TC9 or S!CC9 to the MS, allowingit access to the network

A!r !n(erf)ce

"n a mobile phone network, the radio transmission path between the base station andthe mobile terminal

A-!n(erf)ce

"nterface between the MSC and 4SS in a GSM network

AMAmplitude Modulation

AMPS

Ad*anced Mobile Phone System, the analogue mobile phone technology used in orthand South America and in around '% other countries. 0perates in the :--M9; band

using 8!MA technology

AMRAdapti*e Multi#)ate codec. !e*eloped in &$$$ for use in GSM networks, the AM)has been adopted by 'GPP for 'G

An)lo*ueThe representation of information by a continuously *ariable physical 6uantity such as*oltage

A+S,American ational Standards "nstitute. An non#profit making +S organisation which does

not carry out standardisation work but re*iews the work of standards bodies and assignsthem category codes and numbers

A+S,-13See !#AMPS

AP,Application Program "nterface

Ao"

Ad*ice of Charge

AR,B

Association of )adio "ndustries and 4usinesses. An organisation established by


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communication and broadcasting

ARPUA*erage )e*enue Per +ser

AS",,

American Standard Code for "nformation "nterchange

AS,"Application Specific "ntegrated Circuit

ASPApplication Ser*ice Pro*ider

Asymme(r!c #r)nsm!ss!on!ata transmissions where the traffic from the network to the subscriber is at a higherrate than the traffic from the subscriber to the network

A-#%MAAd*anced Time !i*ision Multiple Access

A#M

Asynchronous Transfer Mode5 a multiple=ed information transfer and switching methodin which the data is organised into fi=ed length %'#octet cells and transmitted accordingto each application.s instantaneous need

AU"Authentication Centre5 the element within a GSM network which generates the

parameters for subscriber authentication

B)n!(0A term meaning both the width of a transmission channel in terms of 9ert; and thema=imum transmission speed in bits per second that it will support

B"'4roadcast Channels5 carry only downlink information and are mainly responsible forsynchronisation and fre6uency correction >4CC9, 8CC9 and SC9?

B""'

4roadcast Control Channel5 the logical channel used in cellular networks to broadcast

signalling and control information to all mobile phones within the network

B-"%MA4roadband Code !i*ision Multiple Access

B-,S%+4roadband "S!

B$R

4it 2rror )ate5 the percentage of recei*ed bits in error compared to the total number ofbits recei*ed

B$R#4it 2rror )ate Test


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B!(A bit is the smallest unit of information technology. As bits are made up using the binarynumber system, all multiples of bits must be powers of two i.e. a kilobit is actually &-@bits and a megabit &-@:%( bits. Transmission speeds are gi*en in bits per second>bit7s?

Blue(oo(0A low power, short range wireless technology designed to pro*ide a replacement for the

serial cable. 0perating in the .@G9; "SM band, 4luetooth can connect a wide range ofpersonal, professional and domestic de*ices such a laptop computers and mobile phones

together wirelessly.

B'"A4usy 9our Call Attempts5 the number of call attempts made during a network.s busiesthour of the day

BS"4ase Station Controller5 the network entity controlling a number of 4ase Transcei*er

Stations

BSS4ase Station System7Subsystem

B#S4ase Transcei*er Station5 the network entity which communicates with the mobilestation

"A,

Common Air "nterface5 a standard de*eloped for the +1.s public CT networks whichenabled the same handset to be used on different networks

"AM$LCustomised Application for Mobile network 2nhanced 3ogic5 an " feature in GSMnetworks that enables users to carry personal ser*ices with them when roaming intoother networks that support CAM23

"S$

CAM23 Ser*ice 2n*ironment

"))c!(y

A measure of a cellular network.s ability to support simultaneous calls

"BCell 4roadcast

""Call Control5 manages call connections

""B

Customer Care and 4illing

"""'Common Control Channels5 a group of uplink and downlink channels between the MSand the 4TS >see PC9, AGC9 and )AC9?


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""SCommon Channel Signalling o.

"%MACode !i*ision Multiple Access5 also known as spread spectrum, C!MA cellular systemsutilise a single fre6uency band for all traffic, differentiating the indi*idual transmissions

by assigning them uni6ue codes before transmission. There are a number of *ariants ofC!MA >see /#C!MA, 4#C!MA, T!#SC!MA et al?

"%MAone

The first commercial C!MA cellular system5 deployed in orth America and 1orea5 alsoknown as "S#$%

"%MA2A member of the "MT#--- 'G family5 backwardly compatible with cdma0ne

"%MA 1XThe first generation of cdma---5 the standardisation process indicated that there would

be C!MA B and C!MA 'B but this no longer appears likely

"%MA 1X $4-%A *ariant of C!MA &B which deli*ers data only

"%P%Cellular !igital Packet !ata5 a packet switched data ser*ice largely deployed in the +SA.The ser*ice uses idle analogue channels to carry the packetised information.

"%PSK

Coherent !ifferential Phase Shift 1eying

"%RCall !etail )ecords5 the record made within the cellular network of all details of both

incoming and outgoing calls made by subscribers, The C!) is passed to the billingsystem for action

"ellThe area co*ered by a cellular base station. A cell site may sectorise its antennas toser*ice se*eral cells from one locationCell siteThe facility housing the transmitters7recei*ers, the antennas and associated e6uipment

"ell sl!((!n*The process of con*erting a single cell to multiple cells by sectorising the antennas in the

cell site or constructing additional cells within a cell site

"$LPCode 2=cited 3inear Prediction5 an analogue to digital *oice coding scheme, there are anumber of *ariants used in cellular systems

"$P#Conference of 2uropean Posts and Telecommunications. A organisation of national posts,

telegraphs and telephone administrations. +ntil &$::, when this work was take o*er by2TS", the main 2uropean body for telecommunications standardisation. C2PT established

the original GSM standardisation group

"&

Call 8orwarding


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",Carrier to "nterference ratio

",B$RCellular "ntercarrier 4illing 2=change )oamer )ecord

",%Caller "dentification

"!rcu!( s!(c0!n*

A method used in telecommunications where a temporary dedicated circuit of constantbandwidth is established between two distant endpoints in a network. Mainly used for*oice traffic5 the opposite of packet switching

"L,%Calling 3ine "dentification

"L,P

Calling 3ine "dentification Presentation

"L,RCalling 3ine "dentification )estriction

"MConnection Management5 is used to set up, maintain and take down call connections

"MSComplementary Metal 0=ide Substrate

"oec

A word formed by combining coder and decoder the codec is a de*ice which encodes anddecodes signals. The *oice codec in a cellular network con*erts *oice signals into and

back from bit strings. "n GSM networks, in addition to the standard *oice codec, it ispossible to implement 9alf )ate >9)? codecs and 2nhanced 8ull )ate >28)? codecs

"on(rol s!*n)lA signal sent to a cellular phone from a base station or *ice *ersa which carriesinformation essential to the call but not including the audio portion of a con*ersation

"P$

Customer Premises 26uipment5 all the e6uipment on the end user.s side of the networkinterface

"PUCentral Processing +nit

"R"Cyclic )edundancy Check

"RM

Customer )elationship Management

"SSCustomer Support System

"#Cordless Telephony


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"#ero generation cordless telephony5 the earliest domestic cordless phones which usedanalogue technology and which had se*ere limitations in terms of range and security

"#1

8irst generation cordless telephony5 "mpro*ed analogue phones with greater range andsecurity5 a number of 2uropean nations produced CT& standards

"#2

Second generation cordless telephony5 +sing digital technology CT phones offeredgreater range, impro*ed security and a wide range of new functionalities. +sed in bothdomestic and cordless PA4B deployments, CT was standardised as an interim 2TS butwas o*erwhelmed by !2CT

"#2-"A,Second generation cordless telephony#common air interface

"#ACordless Terminal Adaptor5 a !2CT term

"#M

Cordless Terminal Mobility

"#RCommon Technical )egulation5 part of the 2TS" standardisation process

"UG

Closed +ser Group

%/A!igital to Analogue con*ersion

%A"!igital to Analogue Con*ertor

%AMA

!emand Assigned Multiple Access

%-AMPS

!igital AMPS, a +S wireless standard also known as "S#&'(

%A+!2CT Access ode

%"A!ynamic Channel Assignment

%""'

!edicated Control Channels5 responsible for roaming, hando*ers, encryption etc. >SeeS!CC9, SACC9 and 8ACC9?

%"$!ata Communications 26uipment


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%"'!ata Clearing 9ouse

%"PSK!ifferentially Coherent Phase Shift 1eying

%"S18!igital Cellular System at &:--M9;, now known as GSM&:--

%$"#

!igitally 2nhanced Cordless Telecommunications system, a second generation digitalcordless technology standardised by 2TS"

%$PSK!ifferential 2ncoded Phase Shift 1eying

%$S!igital 2ncryption Standard

%&SK

!ouble 8re6uency Shift 1eying

%!*!()la method of representing information as numbers with discrete *alues5 usuallye=pressed as a se6uence of bits

%P"M!ifferential Pulse Code Modulation

%PSK

!igital Phase Shift 1eying

%6PSK!igital Duadrature Phase Shift 1eying

%S-"%MA!irect Se6uence C!MA

%SP!igital Signal Processing

%SRR

!igital Short )ange )adio5 a +1 standard for a low power, short range radio systemdesigned for small *oice and data networks

%#$!ata Terminal 26uipment

%#M&!ual Tone Multi8re6uency5 better know as Touch Tone. The tones generated by touching

the keys on the phone are used for a *ariety of purposes including *oice mail systemsand *oice messaging

%#X

!iscontinuous Transmission

%u)l B)n


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The capability of GSM infrastructure elements and handsets to work across both the$--M9; and &:--M9; bands. The capability to seamlessly hando*er between the twobands offers operators maor capacity gains

%B!ummy 4urst5 transmitted as a filler in unused timeslots of the carrier

%ule7

The wireless techni6ue where one fre6uency band is used for traffic from the network tothe subscriber >the downlink? and another, widely separated, band is used for traffic

from the subscriber to the network >the uplink?

$%G$2nhanced !ata rates for GSM 2*olution5 effecti*ely the final stage in the e*olution of theGSM standard, 2!G2 uses a new modulation schema to enable theoretical data speedsof up to ':@kbit7s within the e=isting GSM spectrum. An alternati*e upgrade path

towards 'G ser*ices for operators, such as those in the +SA, without access to newspectrum. Also known as 2nhanced GP)S >2#GP)S?

$$PRM2lectrically 2rasable Programmable )ead 0nly Memory

$&R2nhanced 8ull )ate5 a alternati*e *oice codec that pro*ides impro*ed *oice 6uality in aGSM network >see codec?

$

2lectronic 8unds Transfer

$GSM2=tended >fre6uency range? GSM

$,R26uipment "dentity )egister5 a database that contains a list of all *alid mobile stationswithin a network based on their "M2"

$,RP

2ffecti*e "sotropic )adiated Power

$P"

The mobile phone operating system de*eloped by Symbian. !eri*ed from epoch#thebeginning of an era#2P0C is a '#bit operating en*ironment which comprises a suite ofapplications, customisable user interfaces, connecti*ity options and a range ofde*elopment tools

$PRM2rasable Programmable )ead 0nly Memory

$rl)n*

A dimensionless unit of a*erage traffic density in a telecommunications network

$RM$S2nhanced )adio Messaging System5 a paging technology de*eloped by 2TS" which wasintended to allow users to roam throughout 2urope. Adopted by a number of 2uropeanand Middle 2astern countries, 2)M2S, like paging in general, was o*ertaken by the


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ubi6uity of GSM

$R2uropean )adiocommunications 0ffice

$RP

2ffecti*e )adiated Power

$SMR2nhanced Special Mobile )adio5 a +S PM) *ariant >see SM)?

$S+2lectronic Serial umber5 a '#bit number that uni6uely identifies a mobile phone

$SPR,#2uropean Strategic Programme for )esearch and !e*elopment in "nformationTechnology

$#A"S2=tended TACS5 the e=tension of TACS by the addition of new fre6uencies

$#S,

2uropean Telecommunications Standards "nstituteE The 2uropean group responsible fordefining telecommunications standards

&A""'8ast Associated Control Channel5 similar to the S!CC9 but used in parallel for operation

of the TC9. "f the data rate of the SACC9 is insufficient borrowing mode is used

&B8re6uency Correction 4urst5 used for fre6uency synchronisation of the mobile

&""8ederal Communications Commission5 the +S regulatory body for telecommunications

&""'8re6uency Correction Channel5 downlink only, correction of MS fre6uencies, transmission

of fre6uency standard to MS etc.

&%%

8re6uency !i*ision !uple=5 a radio techni6ue which uses paired spectrum5 +MTS has an8!! element

&%MA8re6uency !i*ision Multiple Access#a transmission techni6ue where the assignedfre6uency band for a network is di*ided into sub#bands which are allocated to asubscriber for the duration of their calls

&$"

8orward 2rror Correction

&'8re6uency 9opping

&'-"%MA


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8re6uency 9opping C!MA

&M"8i=ed Mobile Con*ergence

&M,

8i=ed Mobile "ntegration

&PLM#S8uture Public 3and Mobile Telecommunications System, the original title of the "T+.s

third generation concept now known as "MT#---

&RA8i=ed )adio Access5 see /33

&S%PSK8iltered Symmetric !ifferential Phase Shift 1eying

&SK8re6uency Shift 1eying5 a method of using fre6uency modulation to send digital

information

&S68re6uency Shift 0ffset Duadrature Modulation

&SS8i=ed Satellite Ser*iceGbThe interface between the PC+ and the SGS in a GSM7GP)S network

GcThe interface between the GGS and the 93) in a GSM7GP)S network

GThe interface between the SGS and the SMSC in a GSM7GP)S network

GfThe interface between the SGS and the 2") in a GSM7GP)S network

G!

The interface between the GGS and the "nternet in a GP)S network

GnThe interface between the GGS and the SGS in a GP)S network

GThe interfaces between the GGS7SGS and the 4order Gateway in a GP)S network

GrThe interface between the SGS and the 93) in a GP)S network

Gs

The interface between the SGS and the MSC in a GSM7GP)S network

GA,#GSM7AS" &'( "nteroperability Committee


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GAPGeneric Access Profile5 a !2CT term

G!(/sA unit of data transmission rate e6ual to one billion bits per second

GMS"

Gateway Mobile Ser*ices Switching Centre5 the gateway between two networks

G"&Global Certification 8orum

Geos()(!on)ry)efers to a satellite in e6uatorial orbit abo*e the earth which appears from the surface tobe stationary

G$RA+

GSM#2!G2 )adio Access etwork5 the name for the e*olution of GSM towards 'G basedon 2!G2

GGR&

GSM Global )oaming 8orum

GGS+Gateway GP)S Support ode5 the gateway between a cellular network and a "P network.

G'

A unit of fre6uency e6ual to one billion 9ert; per second

GMP"SGlobal Mobile Personal Communications by Satellite

GMSKGaussian filtered Minimum Shift 1eying5 a refinement of 8S1 which minimises adacentchannel interference

GPRSGeneral Packet )adio Ser*ice5 standardised as part of GSM Phase F, GP)S representsthe first implementation of packet switching within GSM, which is a circuit switched

technology. GP)S offers theoretical data speeds of up to &&%kbit7s using multislottechni6ues. GP)S is an essential precursor for 'G as it introduces the packet switched

core re6uired for +MTS

GPSGlobal Positioning System5 a location system based on a constellation of +S !epartmentof !efence satellites. !epending on the number of satellites *isible to the user canpro*ide accuracies down to tens of metres. ow being incorporated as a key feature inan increasing number of handsets

GRXGP)S )oaming 2=change

GSM

Global System for Mobile communications, the second generation digital technology

originally de*eloped for 2urope but which now has in e=cess of & per cent of the worldmarket. "nitially de*eloped for operation in the $--M9; band and subse6uently modified


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for the :%-, &:-- and &$--M9; bands. GSM originally stood for Groupe Speciale Mobile,the C2PT committee which began the GSM standardisation process

GSM MoUThe GSM Memorandum of +nderstanding, an agreement signed between all the maor2uropean operators to work together to promote GSM. The precursor of the GSM

Association

GSM-RGSM#)ailway, A *ariant of GSM designed to meet the special communications needs of

international train operators

')noffThe transfer of control of a cellular phone call in progress from one cell to another,without any discontinuity

')ns-freeThe operation of a cellular phone without using the handset5 usually installed in *ehicles.

'"S9ierarchical Cell Structure5 the architecture of a multi#layered cellular network wheresubscribers are handed o*er from the macro to the micro to the pico layer depending onthe current network capacity and the needs of the subscriber

'%L"9igh le*el !ata 3ink Control

',P$RLA+9igh Performance )adio 3ocal Access etwork5 a wireless local area network beingstandardised by 2TS" >Also 9"P2)3A?

'LR9ome 3ocation )egister5 the database within a GSM network which stores all thesubscriber data. An important element in the roaming process

'S"S%

9igh Speed Circuit Switched !ata5 a special mode in GSM networks which pro*ideshigher data throughput 4y cocatenating a number of timeslots, each deli*ering

&@.@kbit7s, much higher data speeds can be achie*ed

'SPS%9igh Speed Packet Switched !ata"ubThe interface between the ode 4 and the )C in a +MTS network

,ur

The interface between )Cs in a +MTS network

,usThe connection between the )C and the packet switched network in a GSM7GP)S7+MTS

network

,ucs


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The connection between the )C and the circuit switched network in a GSM7GP)S7+MTS network

,-$#S"nterim 2uropean Telecommunications Standard

,-moeA ser*ice de*eloped by


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,S-5:The first e*olution in the +SA from analogue to digital technology. +sed a hybrid ofanalogue and digital technology, superseded by "S#&'(

,S-;5

Cellular standard know also as cdma0ne

,S-13Cellular standard also known as T!MA or !#AMPS

,S%+"ntegrated Ser*ices !igital etwork

,S"nternational Standards 0rganisation

,SP

"nternet Ser*ice Pro*ider

,#U"nternational Telecommunications +nion

,#U-R"T+ Telecommunications )adio Sector

,#U-#"T+ Telecommunications Standardisation Sector

,


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3and Mobile Satellite Ser*ice

LS3ine of Sight

MA"

Media Access Control5 the lower sublayer of the 0S" system

MA+Metropolitan Area etwork

MAPMobile Application Part

M!(/s

MegabitE a unit of data transmission speed e6ual to one million bits per second

M'

Megahert;5 a unit of fre6uency e6ual to one million 9ert;

M"PAMulti Carrier Power Amplifier

MeXeMobile 2=ecution 2n*ironment5 likely to be based on


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that the information can be transmitted o*er normally difficult links such as mobile radio

MSMobile Station

MS"

Mobile Switching Centre5 the switching centre of a mobile phone network, the MSC hasinterfaces to the 4SCs, 93), 3) and other MSCs

MS,S%+

Mobile Station "nternational "S! umber

MSKMinimum Shift 1eying5 Another term for 88S1

Mul(!le7!n*A telecommunications techni6ue where se*eral channels can be combined to share thesame transmission medium. The most common forms are Time !i*ision Multiple=ing

>T!M? and 8re6uency !i*ision Multiple=ing >8!M?

M4P+Mobile irtual Pri*ate etwork

+-AMPSarrowband AMPS

+B

ormal 4urst5 used to carry traffic and control channels e=cept )AC9

+$#orme 2uropeenne de Telecommunications

+M#ordic Mobile Telephone system5 an analogue cellular technology deployed in the ordiccountries in the late &$-.s5 *ariations were also deployed in the 4enelu= countries andin )ussia. MT operated in the @%- and $--M9; bands and was the first technology to

offer international roaming, albeit only in the ordic countries

+oe B

The element in a +MTS network which interfaces with the mobile station, analogous to a4TS in a GSM network

#A0*er the air acti*ation >of ser*ices and tariff changes?

>M

0perations and Maintenance

M"0perations and Maintenance Centre


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M"-RThe radio 0MC

M"-SThe switching 0MC

S,0pen Systems "nterconnection5 a se*en layer model for protocols defined by "S0

PA"SPersonal Access Communication System5 a digital cordless technology de*eloped initiallyby 4ell 3abs in the +S, PACS was designed to compete with !2CT

P)c?e( s!(c0!n*A communication system wherein the information is transmitted in packets of a set si;e.These packets ha*e address headers and find their way to their destination by the most

efficient route through the network. Compared to circuit switching where a connection isoccupied until the traffic e=change is completed, packet switching offers considerableefficiencies as connections can be used by a number of users simultaneously

PAMRPublic Access Mobile )adio5 Commercial ser*ice using trunking techni6ues in whichmultiple groups of users can set up their own closed systems within a shared publicnetwork

PAPPublic Access Profile5 a !2CT term

P"'Paging Channel5 downlink only, the MS is informed of incoming calls by the 4TS *ia thePC9

P"MPulse Code Modulation5 the standard digital *oice format at (@kbit7s

P"M",APersonal Computer Memory Card "nterface Association the body responsible for defining

the standards and formats for memory e=pansion cards for laptop computers and P!As.ow e=tended to co*er cards for mobile phones

P"+Personal Communications etwork5 a designation initially used in the +1 to refer tonetworks operating in the &:--M9; band >see also !CS&:--?. o longer in use

P"S 1;Personal Communications Systems &$--M9;5 the terminology used in the +S to describethe new digital networks being deployed in the &$--M9; band5 rarely used today

P"U

Packet Control +nit5 an element in a GP)S7+MTS network

P%APersonal !igital Assistant

P%"


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Personal !igital Communications5 a digital cellular technology de*eloped and deployeduni6uely in seeT2T)A?

PS%+

Public Switched !ata etwork

PSP%+


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Public Switched Packet !ata etwork

PS#+Public Switched Telephone etwork

PSU

Power Supply +nit

P#Public Telecommunication 0perator

P##Posts, Telephone and Telegraph Administration

P##Push#to#Talk5 a feature of PM) systems

P


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)egular pulse 2=citation 3inear Prediction coding

ReuseThe assignment of fre6uencies or channels to cells so that adoining cells do not use thesame fre6uencies and cause interference whereas more distant cells can use the samefre6uencies. )euse e=pands the capacity of a cellular network by enabling the use of the

same channels throughout the network

RP)adio Part

R+")adio etwork Controller5 the element which controls the ode 4s within a +MTSnetwork. "t is roughly analogous to a 4SC in a GSM network

Ro)m!n*A ser*ice uni6ue to GSM which enables a subscriber to make and recei*e calls whenoutside the ser*ice area of his home network e.g. when tra*elling abroad

Rou(er

A de*ice which forwards information in a network on a connectionless basis

RRM)adio )esource Management, part of the +MTS infrastructure

R#)emote Terminal

4ack to top

SA""'Slow Associated Control Channel5 transmits continuous measurements in parallel withoperation of TC9 or S!CC95 needed for hando*er decisions

SARSpecific Absorption )ate

SB

Synchronisation 4urst5 used for time synchronisation of the mobile

S-"%MA

Synchronous C!MA >see C!MA?

S"'Synchronisation Channel5 downlink only frame synchronisation and identification of basestation

S"P

Switching7Ser*ice Control Point

S%""'Stand#alone !edicated Control Channel5 communications channel between the MS and

the 4TS. +sed for signalling during call set#up before a TC9 is allocated

S%L"Synchronous !ata 3ink Control
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S%MASpatial !i*ision Multiple Access

SGS+Ser*ing GP)S Support ode5 the gateway between the )C and the core network in a

GP)S7+MTS network

S,MSubscriber "dentity Module5 A smart card containing the telephone number of the

subscriber, encoded network identification details, the P" and other user data such asthe phone book. A user.s S"M card can be mo*ed from phone to phone as it contains allthe key information re6uired to acti*ate the phone

So'oSmall 0ffice79ome 0ffice

S(re)m!n*

An "nternet deri*ed e=pression for the one#way transmission of *ideo and audio content

S#KS"M Tool1itE specified within the GSM standard, this allows operators to add additional

functions to the phone menu in order to pro*ide new ser*ices such as mobile banking oremail

SMRSpecialised Mobile )adio5 the +S term for pri*ate mobile radio >See PM)?

SMSShort Message Ser*ice5 a te=t message ser*ice which enables users to send short

messages >&(- characters? to other users. A *ery popular ser*ice, particularly amongstyoung people, with @-- billion SMS messages sent worldwide in --

SMS"SMS Centre#the network entity which switches SMS traffic

SMS"BSMS Cell 4roadcast

SMS-M

SMS Mobile 0riginated

SMS-M#SMS Mobile Terminated

SMS-PPSMS Point to Point

SPSer*ice Pro*ider

S6AM

Staggered Duadrature Amplitude Modulation

S6PSK

Staggered Duadrature Phase Shift 1eying


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SSSupplementary Ser*ice Support5 handles special ser*ices

SSSignalling System umber >See CCS?

SSPSer*ice Switching Point

S#M

Synchronous Transfer Mode

Sym!)nA company created by Psion, okia, 2ricsson and Motorola in &$$: with the aim ofde*eloping and standardising an operating system which enable mobile phones fromdifferent manufacturers to e=change informationThe operating system is known as 2P0C. Matsushita has subse6uently oined Symbian

#A"S

Total Access Communications System >an AMPS *ariant deployed in a number ofcountries principally the +1?

#APTransferred Account Procedure5 the essential charging methodology for internationalGSM roaming. There ha*e been four TAP standards, TAP&, TAP, TAPF and TAP'. Thelatter offers *ariable record length and is sufficiently fle=ible to support all futurere6uirements arising from the mo*e to 'G

#BRTechnical 4asis for )egulation >part of the 2TS" standardisation process?

#"'Traffic Channel

#%-"%MATime !i*ision C!MA

#%-S"%MATime !i*ision#Synchronous C!MA5 a C!MA *ariant de*eloped by Chinese *endors which

is claimed to offer high data rates and greater co*erage

#%%Time !i*ision !uple=5 a radio technology for use in unpaired spectrum. /C!MA7+MTSincludes a band for T!! mode usage and both P9S and !2CT use this technology

#%MATime !i*ision Multiple Access5 a techni6ue for multiple=ing multiple users onto a single

channel on a single carrier by splitting the carrier into time slots and allocating these ona as#needed basis

#elem)(!cs

A wireless communications system designed for the collection and dissemination ofinformation, particularly refers to *ehicle#based electronic systems, *ehicle tracking andpositioning, on#line *ehicle na*igation and information systems and emergencyassistance


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#$#RATerrestrial Trunked )adio5 a 2uropean de*eloped digital pri*ate mobile radio technologywhich is now being e=tensi*ely deployed worldwide

#e(r)ol

A competiti*e digital PM) technology to T2T)A de*eloped by 8rench *endors

#STerrestrial 8light Telephone System

#!meslo(A frame within a T!MA schema5 has a time inter*al of %( microseconds. Physicalcontent of a timeslot is known as a burst. 8i*e different burst types e=ist, they aredistinguished by different T!MA frame di*isions >see 4, 84, S4, A4 and !4?

#,P'+Telecommunications and "nternet Protocol 9armonisation o*er etworks5 an 2TS"

proect designed to support the market for *oice communications and *oice bandcommunications. "n particular T"P90 will ensure that users on "P#based networks can

communicate with those on circuit switched networks

#M+Telecommunications Management etwork

#MS,Temporary Mobile Subscriber "dentity5 co*ers the "MS" to pre*ent o*er#the#airinterception and tracing

#RAU

Transcoder )ate Adapter +nit5 the transport unit for a &(kbit7s traffic channel on the A#bis interface

#r!-)n)efers to a mobile phone able to operate on the three internationally designated GSMfre6uencies# $--, &:-- and &$--M9;

#rueSyncA technology which enables the optimal synchronisation of calendars, address books,action lists and memoranda. "t enables multi#point, one#step synchronisation of wireless

and wireline de*ices, desktop computers and ser*er#based applications and ser*ices

#RXTransmitter7recei*er >transcei*er?

U,

+ser "nterface

UmThe air interface between the 4TS and the MS in a GSM network

UuThe air interface between the ode 4 and the MS in a +MTS network.


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UM#S+ni*ersal Mobile Telecommunications System5 the 2uropean entrant for 'G5 nowsubsumed into the "MT#--- family as the /C!MA technology.

UP++ni*ersal Personal umber

UP#

+ni*ersal Personal Telecommunications

URL+niform )esource 3ocator5 the addressing system of the "nternet

US+ni*ersal Ser*ice 0bligation

U#RA+ni*ersal Terrestrial )adio Access5 the air interface component of /C!MA.

U#RA+

+ni*ersal Terrestrial )adio Access etwork5 the +MTS radio access network comprisingthe )C, ode 4 and the air interface

US,M+ni*ersal Subscriber "dentity Module5 the 'G e6ui*alent of the GSM S"M

U


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4ack to top


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An indication of the amount of battery life remaining

B)((eryA chargeable de*ice which pro*ides the mobile phone with power. A *ariety of batterytechnologies ha*e been used for mobile phones including nickel cadmium >iCad?, nickelmetal hydride >iM9? and lithium ion >3i#ion?

")ll )rr!n*

A ser*ice which enables users to bar certain incoming or outgoing calls on their mobilephones

")ll (!merA ser*ice which keeps track of the amount of airtime being used by the subscriber on acumulati*e basis

")ll !9er(The capability to di*ert incoming calls to another phone >fi=ed or mobile? or to ananswering ser*ice

")ll 0ol

The ability to put an ongoing call on hold whilst answering or making a second call

")ller ,%Caller "dentification5 displays the name7number of the person calling a mobile phone.Also known as C3"

"L,See Caller "!

"LR

Clear5 the key on a cellular phone which is pressed to remo*e information from thedisplay

%)() c))leMobile phones which ha*e the capability to enable transmission of data from a laptopcomputer or P!A *ia the phone

%u)l )nMobile phones which support transmission and reception of calls on the $--M9; and&:--M9; bands with seamless hando*er between the two fre6uency bands

$&R

2nhanced 8ull )ate >codec?5 an impro*ed *ersion of the standard *oice codec used inGSM phones5 offers impro*ed speech 6uality without impacting on network capacity

$+%The key on a cellular phone which is pressed to terminate a call

,nfr)re )() or(A facility on a mobile phone to allow information to be e=changed with other de*ices e.g.

a PC using infra red technology

Loc?A function on a cellular phone which, when acti*ated, pre*ents use of the phone until the

user enters a security code

+o Ser9!ce


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An indication on the display of a cellular phone that indicates that the user is in an areawhere cellular ser*ice is una*ailable

ne-(ouc0 !)ll!n*The ability to dial fre6uently called numbers using a single key stroke5 see Speed !ialling

P"+Personal Communications etworks5 an outdated term for GSM ser*ices in the &:--M9;

band

P%APersonal !igital Assistant5 a sophisticated handheld de*ice with ad*anced displayfacilities and a range of business#oriented software programs

P0one oo?A list of personal names and numbers stored in a mobile phone.s internal memory or inthe S"M card. These numbers can be called by accessing the appropriate memory andmaking a single key stroke

P,+

Personal "dentity umber5 a number, usually four digits, that must be keyed into amobile phone to make it work. A security measure to pre*ent unauthorised usage

R"LThe function on a cellular phone which recalls a phone number from memory

Ro)m!n*The ability to make and recei*e calls on the same mobile phone when tra*elling outside

the area of the home network operator

Sm)r(0onea combination of mobile phone and personal digital assistant

S+%Send5 The key on a cellular phone which initiates a call or answers an incoming call

See !)ll!n*See 0ne#touch dialling

S()ny (!me

The length of time a battery can power a mobile phone when it is switched on but notmaking or recei*ing calls

#)l?-(!meThe length of time a battery can power a mobile phone when making or recei*ing calls

4o!cem)!lA ser*ice offered by network operators whereby calls recei*ed when the mobile is in use,switched off or out of co*erage can be di*erted to an answering ser*ice which can bepersonalised by the user


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content. /M3 enables optimum usage of the limited display capabilities of the mobilephone

gsm acronyms

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