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عدد الرسائل : 149
الموقع : www.ahmed-nagib.tk
مذا تعمل : controlled in all Mobile
المزاج : Hard Ware maintenance
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نقاط : 10617
تاريخ التسجيل : 29/07/2008

مُساهمةموضوع: حصرياً جميع مصطلحات الصيانة ومعنها كاملاً   الإثنين ديسمبر 07, 2009 2:22 am

[BB5 - base band 5

BCC - Base-station Color Co

B-CDMA - Broadband Code Division Multiple Access

BCH - Broadcast Channels( carry only downlink information and are mainly
responsible for synchronisation and frequency correction (BCCH, FCCH and SCH)

BCCH - Brodcast Control Channel

the logical channel used in cellular networks to broadcast signalling and
control information to all mobile phones within the network

BER - Bit Error Rate; the percentage of received bits in error compared to the
total number of bits received

BERT - Bit Error Rate Test

BGA - ball grid array

BHCA - Busy Hour Call Attempts( the number of call attempts made during a
network’s busiest hour of the day)

B-ISDN - Broadband ISDN

BPS - Bits Per Second

( a measure of how fast binary digits can be sent through a channel. The number
of 0s and 1s that travel down the channel per second.)

BREW - Binary Runtime Environment for Wireless

BREW - is an open source application development platform for wireless devices
equipped for code division multiple access BREW makes it possible for
developers to create portable applications that will work on any handsets
equipped with CDMA chipsets. A similar and competing platform is J2ME (**** 2
Micro Edition), from SunMicrosystems.

BSC - Base Station Controller

BSS - Base Station System

Base Station Subsystem

BSIC - Base Station Identity Code or

Base transceiver Station Identity Code

BTS - Base Transceiver Station

(This device allows communication between phones and cellular network or it is
the network entity which communicates with the mobile station)

Back -light Illumination

illuminates a wireless device’s display and keypad for better low light viewing

Band :

a specific range of frequencies in the radio frequency (RF) spectrum.


A chargeable device which provides the mobile phone with power. A variety of
battery technologies have been used for mobile phones including nickel
cadmiu(NiCad),nickel ****l hydride (NiMH) and lithium ion (Li-ion)

Battery status/Battery charge display

An indication of the amount of battery life remaining

Battery Capacity the capacity of wireless devices’ battery. Measured in
milliampere hours (mAh).


C1 - path loss-criterium

C2 - cell-reselection criterion

Call barring

A service which enables users to bar certain incoming or outgoing calls on
their mobile phones

Call timer:

A service which keeps track of the amount of airtime being used by the
subscriber on a cumulative basis

Call divert:

The capability to divert incoming calls to another phone (fixed or mobile) or
to an answering service

Call hold:

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

Caller ID:

Caller Identification (displays the name/number of the person calling a mobile
phone. Also known as CLI)

CAI - Common Air Interface

( a standard developed for the UK’s public CT2 networks which enabled the same
handset to be used on different networks)

CAMEL - Customised Application for Mobile network Enhanced Logic

( an IN feature in GSM networks that enables users to carry personal services
with them when roaming into other networks that support CAMEL)

CB - Cell Broadcast

CC - Call Control(manages call connections)

CCB - Customer Care and Billing

CCCH - Common Control Channels; a group of uplink and downlink channels between
the MS and the BTS (see PCH, AGCH and RACH)

CCONT- Current Controller (in nokia fones)

CCS7 - Common Channel Signalling No. 7

CDMA - Code Division Multiple Access

(Code Dvision Multiple Access; also known as spread spectrum (or IS-95), CDMA
cellular systems utilise a single frequency band for all traffic,
differentiating the individual transmissions by assigning them unique codes
before transmission. There are a number of variants of CDMA (see W-CDMA,


The first commercial CDMA cellular system; deployed in North America and Korea;
also known as IS-95


A member of the IMT-2000 3G family; backwardly compatible with cdmaOne


The first generation of cdma2000; the standardisation process indicated that
there would be CDMA 2X and CDMA 3X but this no longer appears likely


A variant of CDMA 1X which delivers data only

CDPD - Cellular Digital Packet Data (a packet switched data service largely
deployed in the USA. The service uses idle ****ogue channels to carry the
packetised information.)

CDPSK - Coherent Differential Phase Shift Keying

CDR - Call Detail Records

(the record made within the cellular network of all details of both incoming
and outgoing calls made by subscribers, The CDR is passed to the billing system
for action)


The area covered by a cellular base station. A cell site may sectorise its
antennas to service several cells from one ********Cell site

The facility housing the transmitters/receivers, the antennas and associated

Cell splitting:

The process of converting a single cell to multiple cells by sectorising the
antennas in the cell site or constructing additional cells within a cell site

Cell Site:

a fixed cellular tower and radio antenna that handles communication with
subscribers in a particular area or cell. A cellular network is made up of many
cell sites, all connected back to the wired phone system.


Code Excited Linear Prediction; an ****ogue to digital voice coding scheme,
there are a number of variants used in cellular systemsCEPT - Conference of
European Posts and Telecommunications.

(A organisation of national posts, telegraphs and telephone administrations.
Until 1988, when this work was take over by ETSI, the main European body for
telecommunications standardisation. CEPT established the original GSM
standardisation group)

CF - Call Forwarding

CI - Carrier to Interference ratio

IBER - Cellular Intercarrier Billing Exchange Roamer Record

CID - Caller Identification

Circuit switching:

A method used in telecommunications where a temporary dedicated circuit of
constant bandwidth is established between two distant endpoints in a network.
Mainly used for voice traffic; the opposite of packet switching

CLID - Calling Line Identification

CLIP - Calling Line Identification Presentation

CLIR - Calling Line Identification Restriction

CM - Connection Management(it is used to set up, maintain and take down call

CNR - carrier to noise ratio

cNT- Content

COBBA- Common Baseband ****og

CPE - Customer Premises Equipment; all the equipment on the end user’s side of
the network interface

CPU - Central Processing Unit

CMOS - Complementary ****l Oxide Substrate


A word formed by combining coder and decoder the codec is a device which
encodes and decodes signals. The voice codec in a cellular network converts
voice signals into and back from bit strings. In GSM networks, in addition to
the standard voice codec, it is possible to implement Half Rate (HR) codecs and
Enhanced Full Rate (EFR) codecs

Control signal:

A signal sent to a cellular phone from a base station or vice versa which
carries information essential to the call but not including the audio portion
of a conversation

CRC - Cyclic Redundancy Check

CRM - Customer Relationship Management

CSE - CAMEL Service Environment

CSS - Customer Support System

CT - Cordless Telephony


Zero generation cordless telephony; the earliest domestic cordless phones which
used ****ogue technology and which had severe limitations in terms of range and


Second generation cordless telephony;


First generation cordless telephony; Improved ****ogue phones with greater
range and security; a number of European nations produced CT1 standards


Second generation cordless telephony-common air interface

(Using digital technology CT2 phones offered greater range, improved security
and a wide range of new functionalities. Used in both domestic and cordless
PABX deployments, CT2 was standardised as an interim ETS but was overwhelmed by

CTA - Cordless Terminal Adaptor (a DECT term)

CTM - Cordless Terminal Mobility

CTR - Common Technical Regulation

CUG - Closed User Group


D/A - Digital to ****ogue conversion

DAC - Digital to ****ogue Convertor

DAMA - Demand Assigned Multiple Access

D-AMPS - Digital AMPS, a US wireless standard also known as IS-136

DAN - DECT Access Node

Data capable:

Mobile phones which have the capability to enable transmission of data from a
laptop computer or PDA via the phone

Datacable : interface for conecting a mobile fone to pc

db - decibel (unit if sound)

DB - Dummy Burst; transmitted as a filler in unused timeslots of the carrier

DCT /3,4 - digital core technology

DCT/L - digital core technology linda

DCCH - Digital Control Channel

DTCH - Digital Traffic Channel

DTX - Discontinous Transmission Exchange

DCA - Dynamic Channel Assignment

DCCH - Dedicated Control Channels

( responsible for roaming, handovers, encryption etc)

DCE - Data Communications Equipment

DCH - Data Clearing House

DCPSK - Differentially Coherent Phase Shift Keying

DCS1800 - Digital Cellular System at 1800MHz, now known as GSM1800

DECT - Digitally Enhanced Cordless Telecommunications system, a second
generation digital cordless technology standardised by ETSI

DEPSK - Differential Encoded Phase Shift Keying

DES - Digital Encryption Standard

DFSK - Double Frequency Shift Keying


a method of representing information as numbers with discrete values; usually
expressed as a sequence of bits

Digital a method of encoding a transmission that involves translating
information (in the case of digital phones the information would be a voice
conversation) into a series of 0’s and 1’s. Digital communications technology
offers cleaner calls without the static and distortion that is common with
****og phones. The majority of new handsets sold today are digital rather than
****og technology.

DPCM - Differential Pulse Code Modulation

DPSK - Digital Phase Shift Keying

DQPSK - Digital Quadrature Phase Shift Keying

DS-CDMA - Direct Sequence CDMA

DSP - Digital Signal Processor

Digital Signal Processing refers to manipulating ****og information, such as
sound or photographs that has been converted into a digital form to improve
accuracy and reliability of digital communications.

DSC- Digital Signal Controller

DSRR - Digital Short Range Radio

( a UK standard for a low power, short range radio system designed for small
voice and data networks)

DTE - Data Terminal Equipment

DTMF - Dual Tone MultiFrequency;

(better know as Touch Tone. The tones generated by touching the keys on the
phone are used for a variety of purposes )

DTX - Discontinuous Transmission

Dual Band:

The capability of GSM infrastructure elements and handsets to work across both
the 900MHz and 1800MHz bands. The capability to seamlessly handover between the
two bands offers operators major capacity gains


The wireless technique where one frequency band is used for traffic from the
network to the subscriber (the downlink) and another, widely separated, band is
used for traffic from the subscriber to the network (the uplink)


EDGE - Enhanced Data rates for GSM Evolution

EDGE Enhanced Data rates for GSM Evolution (EDGE) or Enhanced GPRS (EGPRS), is
a digital mobile phone technology that allows for increased data transmission
rate and improved data transmission reliability. It is generally classified as
a 2.75G network technology. EDGE has been introduced into GSM networks around
the world since 2003, initially in North America.

It can be used for any packet switched applications such as an Internet
connection. High-speed data applications such as video services and other
multimedia benefit from EGPRS' increased data capacity. EDGE Circuit Switched
is a possible future development.

EEPROM - Electrically Erasable Programmable Read Only Memory

EFR- Enhanced Full Rate

(Enhanced Full Rate (codec): an improved version of the standard voice codec
used in GSM phones; offers improved speech quality without impacting on network

EFT - Electronic Funds Transfer

EGSM - Extended (frequency range) GSM

EIR - Equipment Identity Register (a database that contains a list of all valid
mobile stations within a network based on their IMEI)

EIRP - Effective Isotropic Radiated Power


The mobile phone operating system developed by Symbian. Derived from epoch-the
beginning of an era-EPOC is a 32-bit operating environment which comprises a
suite of applications, customisable user interfaces, connectivity options and a
range of development tools

EPROM - Erasable Programmable Read Only Memory


A dimensionless unit of average traffic density in a telecommunications network

ERMES - Enhanced Radio Messaging System

(IT is a paging technology developed by ETSI which was intended to allow users
to roam throughout Europe. Adopted by a number of European and Middle Eastern
countries, ERMES, like paging in general, was overtaken by the ubiquity of GSM)

ERO - European Radiocommunications Office

ERP - Effective Radiated Power

ESMR - Enhanced Special Mobile Radio; a US PMR variant (see SMR)

ESN - Electronic Serial Number; a 32-bit number that uniquely identifies a
mobile phone

ESPRIT - European Strategic Programme for Research and Development in
Information Technology


Extended TACS (the extension of TACS by the addition of new frequencies)

ETS - European Telecommunications Standard

ETSI - European Telecommunications Standards Institute: The European group
responsible for defining telecommunications standards

Special thanks for NEILTHIRUMUTTAM


FACCH - Fast Associated Control Channel

( similar to the SDCCH but used in parallel for operation of the TCH. If the
data rate of the SACCH is insufficient borrowing mode is used)

FB - Frequency Correction Burst; used for frequency synchronisation of the

FCC - Federal Communications Commission; the US regulatory body for

FCCH - Frequency Correction Channel (also Frenquency Control Channel)

FDD - Frequency Division Duplex

FDMA - Frequency Division Multiple Access

(a transmission technique where the assigned frequency band for a network is
divided into sub-bands which are allocated to a subscriber for the duration of
their calls)

FEC - Forward Error Correction

FH - Frequency Hopping

FH-CDMA - Frequency Hopping CDMA

FMC - Fixed Mobile Convergence

FMI - Fixed Mobile Integration

FPLMTS - Future Public Land Mobile Telecommunications System

(the original title of the ITU’s third generation concept now known as

FRA - Fixed Radio Access; see WLL

FSDPSK - Filtered Symmetric Differential Phase Shift Keying

FSK - Frequency Shift Keying

( a method of using frequency modulation to send digital information)

FSOQ - Frequency Shift Offset Quadrature Modulation

FSS - Fixed Satellite ServiceGb

(The interface between the PCU and the SGSN in a GSM/GPRS network

FOMA - Freedom Of Mobile multimedia Access

Special thanks for NEILTHIRUMUTTAM
The interface between the GGSN and the HLR in a GSM/GPRS network

The interface between the SGSN and the SMSC in a GSM/GPRS network

The interface between the SGSN and the EIR in a GSM/GPRS network

The interface between the GGSN and the Internet in a GPRS network

The interface between the GGSN and the SGSN in a GPRS network

The interfaces between the GGSN/SGSN and the Border Gateway in a GPRS network

The interface between the SGSN and the HLR in a GPRS network

The interface between the SGSN and the MSC in a GSM/GPRS network

GAIT - GSM/ANSI 136 Interoperability Committee

GAP - Generic Access Profile; a DECT term

A unit of data transmission rate equal to one billion bits per second

GMSC - Gateway Mobile Services Switching Centre; the gateway between two

GCF - Global Certification Forum

Refers to a satellite in equatorial orbit above the earth which appears from
the surface to be stationary

GERAN - GSM-EDGE Radio Access Network the name for the evolution of GSM towards
3G based on EDGE

GGRF - GSM Global Roaming Forum

GGSN - Gateway GPRS Support Node; the gateway between a cellular network and a
IP network.

A unit of frequency equal to one billion Hertz per second

GMPCS - Global Mobile Personal Communications by Satellite

GMSK - Gaussian filtered Minimum Shift Keying

General Packet Radio Service (GPRS) is a mobile data service available to users
of GSM and IS-136 mobile phones. GPRS data transfer is typically charged per
megabyte of transferred data, while data communication via traditional circuit
switching is billed per minute of connection time, independently of if the user
actually has transferred data or been in an idle state. GPRS can be utilized
for services such as WAP access, SMS and MMS, but also for Internet
communication services such as email and web access. In the future, it is
expected that low cost voice over IP will be made available in cell phones.

The Global Positioning System (GPS), is currently the only fully-functional
satellite navigation system. More than two dozen GPS satellites are in medium
Earth orbit, transmitting signals allowing GPS receivers to determine the
receiver's ********, speed and direction.

GRX - GPRS Roaming Exchange


The Global System for Mobile Communications, GSM (original acronym: Groupe
Spécial Mobile) is the most popular standard for mobile phones in the world.
GSM service is used by over 2 billion people across more than 212 countries and
territories.[1][2] The ubiquity of the GSM standard makes international roaming
very common between mobile phone operators, enabling subscribers to use their
phones in many parts of the world. GSM differs significantly from its
predecessors in that both signaling and speech channels are Digital call
quality, which means that it is considered a second generation (2G) mobile
phone system. This fact has also meant that data communication was built into
the system from the 3rd Generation Partnership Project (3GPP).

GSM MoU - The GSM Memorandum of Understanding
(an agreement signed between all the major European operators to work together
to promote GSM. The precursor of the GSM Association)

GSM-R : GSM-Railway,
A variant of GSM designed to meet the special communications needs of
international train operators
The operation of a cellular phone without using the handset; usually installed
in vehicles.

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

Hierarchical Cell Structure; the architecture of a multi-layered cellular
network where subscribers are handed over from the macro to the micro to the
pico layer depending on the current network capacity and the needs of the

HDLC - High level Data Link Control

HIPERLAN: - High Performance Radio Local Access Network
(a wireless local area network being standardised by ETSI), (Also HIPERLAN2)

HLR - Home ******** Register
( the database within a GSM network which stores all the subscriber data.A
vital element in the roaming process)

HR - Half Rate Traffic

HSCSD - High Speed Circuit Switched Data

( a special mode in GSM networks which provides higher data throughput By
cocatenating a number of timeslots, each delivering 14.4kbit/s, much higher
data speeds can be achieved)

HSPSD - High Speed Packet Switched Data

HSCSD - High Speed Circuit Switched Data System
( this enables the transmission of data over current GSM networks at speeds up
to 43.2 kbps. HSCSD enables such high speeds by using multiple channels.)
IC - Intergrated Circuit
ICSP - In Circuit Serial Programming

IF- Intermediate Frequency

Interim European Telecommunications Standard

Infrared data port:
A facility on a mobile phone to allow information to be exchanged with other
devices e.g. a PC using infra red technology

IN - Intelligent Network

The Internet is the worldwide, publicly accessible network of interconnected
computer networks that transmit data by packet switching using the standard
Internet Protocol (IP). It is a "network of networks" that consists
of millions of smaller domestic, academic, business, and government networks,
which together carry various information and services, such as electronic mail,
online chat, file transfer, and the interlinked Web pages and other ********s
of the World Wide Web

An intranet is a private computer network that uses Internet protocols, network
connectivity, and possibly the public telecommunication system to securely
share part of an organization's information or operations with its employees.
Sometimes the term refers only to the most visible service, the internal
website. The same concepts and technologies of the Internet such as clients and
servers running on the Internet protocol suite are used to build an intranet.
HTTP and other Internet protocols are commonly used as well, especially FTP and
e-mail. There is often an attempt to use Internet technologies to provide new
interfaces with corporate 'legacy' data and information systems.

Briefly, an intranet can be understood as "a private version of the
Internet", or as a version of the internet confined to an organization.

IMEI - International Mobile Equipment Identity
The International Mobile Equipment Identity (IMEI) is a number unique to every
GSM and UMTS mobile phone. It is usually found printed on the phone underneath
the battery and can also be found by dialing the sequence *#06# into the phone.

The IMEI number is used by the GSM network to identify valid devices and
therefore can be used to stop a stolen phone from accessing the network. For
example, if a mobile phone is stolen, the owner can call his or her network
provider and instruct them to "ban" the phone using its IMEI number.
This renders the phone useless, regardless of whether the phone's SIM is

A service developed by Ja*****e operator NTT DoCoMo, I-mode delivers a huge
range of services to subscribers and has proved enormously popular with some 30
million regular users. The revenue sharing model used for I-mode is being
adopted by other operators as the basis for the new services enabled by GPRS
and 3G

IMSI - International Mobile Subscriber Identity
(an internal subscriber identity used only by the network)

The family of third generation technologies approved by the ITU. There are five
members of the family: IMT-DS, a direct sequence WCDMA FDD solution IMT-TC, a
WCDMA TDD solution IMT-MC, a multicarrier solution developed from cdma2000
IMT-SC, a single carrier solution developed from IS-136/UWC-136 IMT-FT, a
TDMA/TDD solution derived from DECT

INAP - Intelligent Network Application Part

IP - Internet Protocol

IPR - Intellectual Property Rights

The next generation of IP addressing designed to replace the current system
IPv4 which uses a 32 bit address code which limits the number of possible
addresses. IPv6 uses a 128 bit code ensuring that the possible number of IP
addresses will be virtually limitless

IrDA - Infra red Data Association

A low earth orbit satellite communications system developed initially by

The first evolution in the USA
from ****ogue to digital technology. Used a hybrid of ****ogue and digital
technology, superseded by IS-136

Cellular standard know also as cdmaOne

Cellular standard also known as TDMA or D-AMPS

ISDN - Integrated Services Digital Network

International Standards Organisation

ISP - Internet Service Provider

software developed by Motorola and built into some wireless phones and PDAs
that makes typing words on a keypad easier. The competitor to iTAP is T9

ITU - International Telecommunications Union

ITU-R - ITU Telecommunications Radio Sector

ITU-T - ITU Telecommunications Standardisation Sector

IWF - Interworking Function
JAF - Just Another Flasher

A programming language developed by Sun Microsystems **** is characterised by
the fact that programs written in **** do not rely on an operating system

J2ME :
(**** 2 Micro Edition) is a technology that allows programmers to use the ****
programming language and related tools to develop programs for wireless and
mobile devices such as cellular phones and personal digital assistants (PDAs).
The J2ME platform can be used to implement a wide variety of applications, from
wireless games to data portals into the Internet or corporate enterprise

JPEG- Joint Photographic Experts Group

JTAG - Joint Test Action Group
LAI - Local Area Identification

Link Access Protocol

Local Area Network

Local Area Network Services

LED - Light Emitting Diode
(a semiconductor device that illuminates when electricity passes through it.
Often used as an indicator light, or to spell out words and numbers. LEDs come
in many colors, and some LEDs contain multiple elements and are therefore
capable of multiple colors. Provides good visibility in direct sunlight and in

LEO - Low Earth Orbit
( refers to satellites which orbit the Earth at around 1,000 kilometres)

LPT - Line Print Terminal

Land Mobile Satellite Service

A function on a cellular phone which, when activated, prevents use of the phone
until the user enters a security code

LCD - Liquid crystal display

Lithium Ion battery:
a type of rechargeable battery for cell phones which is generally lighter
weight than earlier battery types, has a relatively longer cycle life, and
generally does not suffer from “memory” effect.

Lithium Polymerbattery:
a battery technology similar to lithium ion but allows the battery to be molded
to any shape allowing greater flexibility for mobile phone designers.
MAC - Media Access Control; the lower sublayer of the OSI system

MAD - Memory ****og Digital

MAN - Metropolitan Area Network

MAP - Mobile Application Part

Mb- Megabite
( a unit of data transmission speed equal to one million bits per second)

MCC - Mobile Country Code
MCU - Micro Control Unit

MCPA - Multi Carrier Power Amplifier

MeXe - Mobile Execution Environment
(likely to be based on ****, MeXe enables WAP-enabled devices to offer a wider
range of features with greater security and flexibility, as well as greater
control of telephony features)

MFSK - Multiple Frequency Shift Keying

MHz - Megahertz (a unit of frequency equal to one million Hertz)

MMI - Man Machine Interface

MMS - Multimedia Messaging Service
(an evolution of SMS, MMS goes beyond text messaging offering various kinds of
multimedia content including images, audio and video clips)

MMSK - Modified Minimum Shift Keying
MNC - Mobile Network Code
MNO - Mobile Network Operator

The process of imposing an information signal on a carrier. This can be done by
changing the amplitude (AM), the frequency (FM) or the phase, or any combination
of these

Motion Picture Experts Group; MPEG4 is a technology for compressing voice and
video so that the information can be transmitted over normally difficult links
such as mobile radio

MS - Mobile Station

MSC - Mobile Switching Centre
(the switching centre of a mobile phone network, the MSC has interfaces to the
BSCs, HLR, VLR and other MSCs)

MSIN - Mobile Station Identification Number

MSISDN - Mobile Station International ISDN Number

MSK - Minimum Shift Keying (Another term for FFSK)

A telecommunications technique where several channels can be combined to share
the same transmission medium. The most common forms are Time Division
Multiplexing (TDM) and Frequency Division Multiplexing (FDM)

MVPN - Mobile Virtual Private Network

Master Reset:
restores the setting to factory

MIDI - Musical Instrument Digital Interface
(a standard that allows digital musical instruments to communicate with one
another. In cell phone terms, MIDI is what
gives you polyphonic sounds; which means your ring tones can sound like real
music instead of beeps. )

MMS - Multimedia Messaging Service
(a further extension of SMS and EMS.MMS is designed to make use of newer and
quicker mobile transmission methods such as GPRS, HSCSD, EDGE and UMTS, involving
the attachment of multimedia extensions to messages, such as video and sound.
An e-mail function is also planned. )

MO-SMS - Mobile-Originated
Short Message Service
(the ability to send short text messages from a phone. Both the phone and the
carrier’s network must support this feature for it to work. Messages can be
sent to other phones by phone number. Many phones also allow sending messages
directly to e-mail addresses
Narrowband AMPS

(Number Assignment Module) a circuit chip located inside a phone which stores
your telephone number, lock code, timer reset code, network information and
other operational data. The NAM
is programmed by the service provider when a device is activated. Today’s
phones have EPROM type NAM
and are keypad programmable.

NAMPS (Narrowband Advanced Mobile Phone Service) is the next generation of AMPS
systems. NAMPS is a cellular call-handling system that uses digital signaling
techniques to split the existing channels into three narrowband channels. The
result is three times more voice channel capacity than the traditional AMPS
system provides.

Normal Burst; used to carry traffic and control channels except RACH

NCC (National Color Code or Network Color Code

Norme Europeenne de Telecommunications

NiMH - Nickel ****l

NMSI - National Mobile Subscriber Identity

NMT: - Nordic Mobile Telephone system
(an ****ogue cellular technology deployed in the Nordic countries in the late
1970’s; variations were also deployed in the Benelux countries and in Russia.
NMT operated in the 450 and 900MHz bands and was the first technology to offer
international roaming, albeit only in the Nordic countries)

Node B:
The element in a UMTS network which interfaces with the mobile station,
****ogous to a BTS in a GSM network

No Service:
An indication on the display of a cellular phone that indicates that the user
is in an area where cellular service is unavailable
OMAP - Open Multimedia Applications Platform

OMC - Operations and Maintenance Centre
OMC- S The switching OMC

OMC-R The radio OMC

OLED - Organic Light-Emitting Diode

(a next-generation display technology that consists of small dots of organic
polymer that emit light when charged with electricity. OLED is beginning to
replace LCD technology in handheld devices such as PDAs and cell phones because
the technology is thinner, lighter, brighter, cheaper to manufacture and
consumes less power than LED’s.)

OTA - Over the air activation
( the downloading of ring tones, picture messages, and other content to your
mobile phone wirelessly. )

OSI - Open Systems Interconnection; a seven layer model for protocols defined
by ISO

OTP - One Time Programable

Personal Access Communication System; a digital cordless technology developed

by Bell Labs in the US, PACS was designed to compete with DECT

Personal Access Communication System; a digital cordless technology developed

by Bell Labs in the US, PACS was designed to compete with DECT

Packet switching
A communication system wherein the information is transmitted in packets of a
set size.

These packets have address headers and find their way to their destination by
the most

efficient route through the network. Compared to circuit switching where a

is occupied until the traffic exchange is completed, packet switching offers

considerable efficiencies as connections can be used by a number of users


Public Access Mobile Radio; Commercial service using trunking techniques in

multiple groups of users can set up their own closed systems within a shared


Public Access Profile; a DECT term

Paging Channel; downlink only, the MS is informed of incoming calls by the BTS
via the


Pulse Code Modulation; the standard digital voice format at 64kbit/s

Personal Computer Memory Card Interface Association the body responsible for

the standards and formats for memory expansion cards for laptop computers and
PDAs. Now

extended to cover cards for mobile phones

Personal Communications Network; a designation initially used in the UK to
refer to

networks operating in the 1800MHz band (see also DCS1800). No longer in use

PCS 1900
Personal Communications Systems 1900MHz; the terminology used in the US to
describe the

new digital networks being deployed in the 1900MHz band; rarely used today

Packet Control Unit; an element in a GPRS/UMTS network

Personal Digital Assistant

Personal Digital Communications; a digital cellular technology developed and

uniquely in Japan. A TDMA technology, PDC is incompatible with any other

cellular standard

Pan European Digital Communications; A designation occasionally used in the

1990’s to describe GSM. No longer in use

The percentage of the total population which owns a mobile phone

Personal HandyPhone System/Phone; a digital cordless technology developed in Japan

which achieved great success. Deployed by NTT DoCoMo and other Ja*****e operators

offered two-way communications, data services and Internet access and
eventually won

some 28 million customers. Now in decline as cellular’s wide area capabilities

better service

Personal Identifier

Public Key

Public Land
Mobile Network; any cellular operator’s network

Private Mobile Radiocommunications; two-way radio technology widely used for

and delivery services, taxi companies and the like. See TETRA

Post Office Code Standardisation Group; a now defunct industry grouping which

standardised pager addressing systems

Points of Presence; a method of measuring the value of a cellular licence; the

approximate number of potential customers within a geographical area

Plain Old Telephone Service

Programmable Read Only Memory

Phase Shift Keying

Public Safety Radio Communications Project; an initiative by the UK Government

standardise all emergency services communications on to a single digital technology

(see TETRA)

Public Switched Data Network

Public Switched Packet Data Network

Public Switched Telephone Network

Power Supply Unit

Public Telecommunication Operator

Posts, Telephone and Telegraph Administration

Push-to-Talk; a feature of PMR systems

Personal Wireless Telecommunications; a variant of DECT developed for use in
the USA

Personal Communications Networks; an outdated term for GSM services in the
1800MHz band

Personal Digital Assistant; a sophisticated handheld device with advanced

facilities and a range of business-oriented software programs

Phone book
A list of personal names and numbers stored in a mobile phone’s internal memory
or in

the SIM card. These numbers can be called by accessing the appropriate memory

making a single key stroke

Personal Identity Number; a number, usually four digits, that must be keyed
into a

mobile phone to make it work. A security measure to prevent unauthorised usage

P-**** (Personal ****) a **** API and specification for running ****
applications on

small devices.

Packet a piece of data transmitted over a packet-switching network such as the

or wireless Internet; a packet includes not just data but also its destination.

Packet Switching a type of communication that splits information into “packets”
of data

for transmission. This is efficient, as it only uses radio spectrum when it’s

sending something, rather than keeping an open channel at all times (as is done

circuit switching). Packet switching is a core component to 3G technology.

Passive Matrix Display an LCD technology that uses a grid to supply the charge
to each

particular pixel on the display. An STN screen has a slower ******* rate than a

screen, but it’s cheaper. Also called a SuperTwist Nematic of STN display.

PC Card (PCMCIA) a removable, credit-card sized devices that may be plugged
into slots

in PCS and wireless communication devices to provide fax or modem functions or


PCMCIA (Personal Computer Memory Card International Association) a group of

manufacturers and vendors responsible for developing standards for PC Cards

called PCMCIA cards.)


also known as DCS 1800 or GSM 1800, PCN is a term used to describe a wireless

communication technology in Europe and Asia.

PDA (personal digital assistant) a portable, handheld computing device that
acts as an

electronic organizer. PDAs are typically used for managing addresses, appointments,

to-do lists and notes, but some newer models support wireless Internet access,

and other interactive applications. Also referred to as Handheld Computers.
PDAs come

in two major flavors - Palm and Pocket PC.

PIN (Personal Identification Number) a numeric code or password that may be
required by

a service provider in order to make outgoing calls or obtain access to certain

applications and data. This code is always associated to a SIM card, not a
phone and is

designed to help guard against cellular fraud.

PTT (Push-To-Talk) a two-way communication service that works like a “walkie

This feature, found on Motorola iDEN phones from Nextel and Telus Mobility’s

allow communication in only direction at a time unlike a cell phone that allows

simultaneous conversations. New PTT systems are now being introduced that use

technology to provide PTT service digitally over 3G data networks

PUK (Personal Unblocking Code) used to unblock a blocked SIM card, this code is

during the sub******ion of a phone

represents the on/off (power) key on some wireless devices
RACH - Random Access Channel
RACE - Research in Advanced Communications in Europe

RAM - Random Access Memory

RAP3G- Radio Application Processor 3rd Generations
RCC - Radio Common Carrier

The assignment of frequencies or channels to cells so that adjoining cells do
not use the same frequencies and cause interference whereas more distant cells
can use the same frequencies. Reuse expands the capacity of a cellular network
by enabling the use of the same channels throughout the network

RELP - Regular pulse Excitation Linear Prediction coding

RF AMP = Radio Frequency Amplifier

RFP - Radio Fixed Part
(*****alent to a base station in a DECT system)

Radio Network Controller; the element which controls the Node Bs within a UMTS
network. It is roughly ****ogous to a BSC in a GSM network
RP - Radio Part

A service unique to GSM which enables a subscriber to make and receive calls
when outside the service area of his home network e.g. when travelling abroad

A device which forwards information in a network on a connectionless basis

RRM - Radio Resource Management, part of the UMTS infrastructure

RT - Remote Terminal

RX :- signal received
SIM Simulation
SIM Simulator
SIM Sales in Minutes
SIM Scanning Ion Microscope
SIM Scientific Instruments Module (Apollo program)
SIM Screened Images Multimedia, Inc.
SIM Security Identity Module (cell phone usage)
SIM Security Information Management
SIM Security Information Manager
SIM Selected Ion Monitoring
SIM Selected Item Management
SIM Semantic Information Manager
SIM Sensor Input/Interface Module
SIM Serial Interface Module
SIM Serials in Microform
SIM Service Impact Management (BMC software)
SIM Service Industry Marketing
SIM Service Information Message
SIM Service Interaction Manager
SIM Serving in Mission
SIM Systems Integration Management

________________-_ التوقيع -_- ________________
الموقع الرسمي
للمهندس احمد نجيب
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط]
مدير عام منتدى تكنولوجي موبايل مصر
ومدير عام مركز الصفوه التعليمي
لتعليم صيانة المحمول بالاسكندرية
للتواصل المباشر يرجى المراسلة عبره الاميل الخاص
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط]
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط]

الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو http://t-mobileteam.tk


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مُساهمةموضوع: رد: حصرياً جميع مصطلحات الصيانة ومعنها كاملاً   الأربعاء فبراير 03, 2010 12:55 pm

merciiiiiiiiiiiiiiiiiiiiiiiii :pirat:
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو
درويش فزارى


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مُساهمةموضوع: رد: حصرياً جميع مصطلحات الصيانة ومعنها كاملاً   السبت أكتوبر 23, 2010 7:48 pm

مشكور ارجوا كتابة الموضوع بخط غير الابيض
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو http://DRWISHFZARY@YAHOO.COM


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مُساهمةموضوع: رد: حصرياً جميع مصطلحات الصيانة ومعنها كاملاً   الأربعاء أكتوبر 27, 2010 10:20 pm

جزاكم الله خيرااااااااا
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو http://www.google.com.eg/


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مُساهمةموضوع: رد: حصرياً جميع مصطلحات الصيانة ومعنها كاملاً   السبت نوفمبر 06, 2010 4:06 pm

هو انتم لية بتشتغلونا مفيش مخططات والا اى فديو الاشقر الاشقر الاشقر الاشقر الاشقر
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو
حسن شبيب


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مُساهمةموضوع: رد: حصرياً جميع مصطلحات الصيانة ومعنها كاملاً   الخميس فبراير 24, 2011 3:58 pm

الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو
حصرياً جميع مصطلحات الصيانة ومعنها كاملاً
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