Technical Glossary

1-9

1xRTT CDMA

1xRTT (also referred to as 3G 1x) represents one times radio transmission technology with 1.25 MHz channels. This technology supports peak data speeds up to 144 kbps, and up to a doubling of voice capacity.

A

AMPS (Advanced Mobile Phone System)

AMPS is the original North American cellular system (now used in North America, Latin America, Australia and parts of Russia and Asia). While it boasts the best coverage, it suffers from numerous drawbacks: its analog FM radio link is very easy to eavesdrop on; it makes very inefficient use of the spectrum compared to digital standards; and sound quality is generally worse than digital standards.

AMR (Adaptive Multi-Rate)

AMR is a speech coder standard introduced by the 3rd Generation Partnership Project (3GPP), a partnership project of various standards organizations, developed to preserve high speech quality under a wide range of transmission conditions. The theory behind AMR is to lower the codec rate as the interference increases, thus enabling the application of more error correction. The AMR codec is also used to harmonize the codec standards amongst different cellular systems.

AMR (Automatic Meter Reading)

Generally used for power utility meters, AMR can make use of wired or wireless technology, including cellular and LEOs (Low Earth Orbiting satellites).

Analog

The standard, pre-digital mobile phone technology – the norm until recently (e.g. 1G). It has lower call quality and is a major security risk.

ANSI (American National Standards Institute)

A standards setting, non-government organization founded in 1918. It develops and publishes standards for transmission codes, protocols and high level languages for voluntary use in the United States. www.ansi.org

Antenna

A metallic device used to transmit and receive electromagnetic waves. An antenna can be a passive or active device.

Application

Applications are a set of security mechanisms, files, data and protocols (excluding transmission protocols).

Application protocol

A set of procedures required by the application.

ASCII (American Standard Code for Information Interchange)

The common way to convert characters to digital format for storage on or communication between computers and peripherals. ASCII assigns a unique 8-character binary sequence, to the 256 characters needed to accurately convey text.

ASIC (Application-Specific Integrated Circuit)

A custom-designed silicon chip for a specific use. Practically speaking, many ASICs are actually designed to perform multiple, generalized tasks. E.g. Manufacturers view the microprocessors as an ASIC, although they are generally used for diverse purposes. Manufacturers use ASICs to consolidate several chips into a single package, reducing system board size and power consumption.

ASP (Active Server Pages)

Microsoft's server-side scripting technology to make interactive web pages. Based on VBScript.

Asynchronous transmission

A mode in which the sending and receiving serial hosts know where a character begins and ends because each byte is framed with a ‘start bit’ (always zero) and a ‘stop bit’, which appears after the parity bit, if used.

ATM (Asynchronous Transfer Mode)

Very high-speed data transmission technology. ATM is a high bandwidth, low-delay, connection-oriented, packet-like switching and multiplexing technique. Usable capacity is segmented into 53-byte fixed-size cells, consisting of header and information fields, allocated to services on demand. “Asynchronous” refers to the way each cell is presented to the network on a “start-stop” basis.

B

Bandwidth

A measure of the range of frequencies in a communications channel over which the carrier signal may vary. Generally a communications channel is defined by its lowest and highest frequency, and channel bandwidth is computed as the difference between the two as measured in Hertz, kHz or MHz. Since the bandwidth of a channel is directly proportional to the amount of data that can be transmitted over it per unit time, channel bandwidth is sometimes measured as a data rate rather a frequency difference. Commonly used to describe the maximum transmission speed available to a subscriber.

Base station

In a cellular communication system, a base station is a central mode of transmission and reception for the network. Currently, this station includes an ominidirectional antenna or several sectoral antennas.

Bit

1. The basic unit of digital information, a bit has a value of 1 or 0 (i.e. binary).
2. Within the context of CDMA is distinct from chip and refers to a payload binary digit. Each bit is represented by many chips. Bits contain information and are subject to the laws of Information Theory.

Bit-rate

The speed at which bits are transmitted over the physical layer, also called signaling rate. This is different from throughput, which is an end measure of network speed.

Bluetooth™

A radio technology built around a new chip that makes it possible to transmit signals over short distances between computers and handheld devices without the use of wires. A global initiative by Ericsson, IBM, Intel, Nokia and Toshiba to set a standard for cable-free connectivity between mobile phones, mobile PCs, handheld computers and other peripherals. It uses short-range radio links in the 2.gGHZ Instrumentation Scientific and Medical (ISM) "free band".

BPS

Bits per second – a measure of data transmission speed; the number of pieces of information transmitted per second.

Byte

A Byte is a sequence of bits (usual 8), which represents a single character, such as a letter of the alphabet, a decimal digit or a punctuation mark.

C

Carrier

A network operator may market any number of communication services for voice and data. Carriers offer their services to both end-customers (private or business) and other carriers. In the latter case, the service simply consists of transport capacity for long-distance traffic. For example, local/regional network operators will buy transport capacity from global carriers.

Carrier Signal

A signal transmitted at a pre-determined frequency to act as a "carrier" for voice or data. The carrier signal is modulated by voice or data input so as to "carry" the information to its destination where the modulation process is reversed to recover the original information.

CCSA (China Communications Standards Association)

A standards agency in China. www.ccsa.org.cn

CDMA (Code Division Multiple Access)

A technology for digital transmission of radio signals, e.g. between a mobile telephone and a base station. The system uses the same frequency to allow multiple conversations. Conversations are cut into snippets and then remodulated and reassembled at the other end.

Cell

The basic geographical unit of a cellular communications system. Service coverage of a given area is based on an interlocking network of cells, each with a radio base station (transmitter/receiver) at its center. The size of each cell is determined by the terrain and forecasted number of users.

Cellular

Circuit-switched voice telephone communications via cellular radio channels. The service area is divided into many cells and in each there is a base station handling the communications in that particular cell.

CE Mark

The CE Marking is the manufacturer's declaration, showing compliance with all applicable directives. Mandatory for most products sold in the EU. With the exception of some high-risk products, most products can be self- assessed by the manufacturer to meet the Essential Requirements. While the CE Marking does permit a product's access to the EU, it is not an approval mark, certification or quality mark; nor is it intended to be a marketing tool. CE is a "Marking" that is only a declaration of the supplier's own responsibility.

Chip

In the context of CDMA, a chip is distinct from a bit (binary digits transmitted over the RF link). Each bit is represented by many chips, and if a majority of the chips get through then the bit can be reconstructed properly. The number of chips representing each bit varies depending on the bit rate. When using an 8K vocoder (such as EVRC) there are 128 chips for each bit. Chips don't contain data as such because both the sender and receiver know the spreading pattern used to create them from a bit, and are therefore not directly subject to the laws of Information Theory. Though there are many phones simultaneously using a single frequency to transmit full chiprate, the channel is not saturated unless the bitrate approaches the bandwidth of the carrier.

Chipset

A group of IC chips that are designed to work together and generally used and priced as a set.

Circuit Switched Cellular (CSC)

Offers wide coverage. Used for large data transfers. See also see Circuit Switched Data.

Circuit Switched Data (CSD)

Data communication over a dedicated channel or circuit assigned on a per call basis. CSD calls are often metered and priced by the minute like voice calls.

Circuit Switching

A method of communicating in which a dedicated communications path is established between two devices through one or more intermediate switching nodes. Unlike packet switching, digital data are sent as a continuous stream of bits. Bandwidth is guaranteed, and delay is essentially limited to propagation time. The telephone system uses circuit switching.

CLI (Caller Line Identification)

A service that allows a customer to see the number of the caller before answering the call.

Coaxial Cable

Cable consisting of a single copper conductor in the center surrounded by a plastic layer for insulation and a braided metal outer shield. Used to transfer radio frequency energy from the transmitter to the antenna.

Conference call

Allows you to speak to more than one person at the same time. To use this service, it must be supported by your network and by your phone. You may also have to add this service to your subscription.

CSD (Circuit Switched Data)

The traditional data exchange technology. A circuit connection is made that is exclusively reserved for the individual’s use. Payment is then made in accordance with the duration of the connection. This can be inefficient, e.g. when connecting to the internet using WAP, as more time is spent reading the information than is spent exchanging data, however you continue to pay when you are reading. For corporate e-mail services however, applications have been developed where the user works “off line” and then only connects to the server to download and receive e-mails.

CTIA (Cellular Telecommunications & Internet Association)

The international organization that represents all sectors of wireless communications-cellular, personal communication services and enhanced specialized mobile radio. CTIA is the voice of the wireless industry, serving the interests of service providers, manufacturers, wireless data and Internet companies and other contributors to the wireless universe. CTIA's industry committees provide leadership in the area of taxation, roaming, safety, regulations, fraud and technology. www.ctia.org

CTS

Clear to Send

D

Digital

The newest form of wireless communications that takes all voice transmissions and converts them to binary data, then reconstructs them into the original voice format at the receiving end. More secure than analog, and also relatively free from static and fading signals.

Dropped Call

A wireless call that is unintentionally disconnected due to a system problem, lack of channel availability or dead spot in coverage.

Dual Band

Dual band phones are capable of using two different frequencies of the same technologies. For example, a TDMA or CDMA phone that can use either the 800 or 1900 MHz band. There are also Triple Band phones in the GSM market that support 900, 1800, and 1900 MHz. Dual band phones allow callers to access different frequencies in the same or different geographic regions, essentially giving their phone a wider coverage area.

Dual Mode

Dual mode phones are phones that support more than one technology. Typically, this is either CDMA and AMPS or TDMA and AMPS, but other dual mode phones are starting to appear on the market, such as GSM and TDMA.

E

EDGE (Enhanced Data rates for GSM Evolution)

Developed for networks without a UMTS license. Although it promises only about a third of the bandwidth, most UMTS services will also have a form using EDGE, making speeds of up to 184kbps possible.

EFR

Enhanced Full Rate

Embedded Antennas

Antennas directly integrated into a system such as an access point, a terminal or a handset. In most cases, this antenna is matched to the system and cannot be used in other applications without modification.

Enhanced Messaging Service (EMS)

Messaging comprising simple pictures, sounds, animations, and modified text.

Error Detection & Correction

Refers to various techniques used to detect and correct errors that may be introduced when digital data is copied, moved or transmitted to another device. Detection and correction technologies generally require that the data be expanded to include additional information, which can noticeably impact the rate at which the effective information is delivered.

ETSI (European Telecomunications Standards Institute)

The European counterpart to ANSI, the American Standards Institute. ETSI's task is to pave the way for telecommunication integration in the European community as part of the single European market plan. www.etsi.org

Extranet

An extranet is an external extension of a company's intranet that allows limited, external access to defined portions of the intranet.

E-GPRS

Enhanced GPRS, another term for EDGE.

E-GSM

Extended-GSM

F

Fixed Access

A terminal access to the network that users wired technology.

FR

Full Rate

Frequency

Rate of signal oscillation in Hertz (wave form repetitions per second - one Hz is one cycle per second). The frequencies band assigned to GSM is 900-1800 MHz. For 3G the bands assigned are between 1885-2025 MHz and 2110-2200 MHz.

FTA

Full Type Approval

Full Duplex

Refers to a communication system or equipment capable of simultaneous transmission in two directions.

G

Gateway

Usually a computer that acts as a protocol translator or which controls communications across logical boundaries within a network or between networks.

GPIO

General Purpose Input/Output

GPRS

General Packet Radio Service refers to a new, packet-based wireless communication service that promises data rates from 56 up to 114 Kbps and continuous connection to the Internet for wireless phone and mobile computer users. The higher data rates as well as the "always connected" mode of operation will open the door to many new, non-voice applications and services. GPRS was designed to enhance GSM communications, but will probably be adapted and adopted by at least some network operators using technologies other than GSM.

GPS (Global Position System)

Based on a US defense satellite system, GPS enables geographical tracking of entities, e.g. individuals, vehicles etc. Useful for navigating a car in the city, or helping emergency rescue-team to locate the person in need of help. CDMA cell systems use fixed GPS receivers to determine the time very precisely.

GSM

The Global System for Mobile Communications Service is the most widely adopted, digital cellular technology in use today. GSM uses time and frequency division techniques (TDMA and FDMA) to optimize the call carrying capacity of a wireless network. GSM also provides a number of carefully standardized and broadly supported capabilities such as Short Message Service (SMS), circuit switched data (CSD) and General Packet Radio Services (GPRS). Used on the 900 MHz and 1800 MHz frequencies in Europe, Asia and Australia, and the MHz 1900 frequency in America.

H

HR

Half Rate

HSCSD (High Speed Circuit Switched Data)

A circuit-linked technology which achieves higher transmission speeds by combining several GSM channels simultaneously. This allows speeds of up to 58 bps, far faster than original GSM (9.6bps). For upload HSCSD is limited to half the speed. This technology is the predecessor of GPRS, which delivers up to 115kbs.

Hz

Hertz

I

Internet

The internet is a data communication network that ties together computer networks in many parts of the world and that makes it possible for users to tap into information made available at tens of thousands of participating computer sites. Mark-up languages like HTML set standards for how shared information is to be laid out. Web browsers interpret the code and display the retrieved information on the user's computer screen or printer.

IP Address

The unique digital identifier of a device communicating over the internet or other data network using similar technology. Today's addresses consist of a 32-bit string of 1's and 0's and are analogous to postal addresses.

IP (Internet Protocol)

The method by which data is sent from one computer to another on the internet.

ISP (Internet Service Provider)

ISPs provide internet access to people or corporations, serving as an entry point to the worldwide network. ISPs normally provide several means of access to their customers, including dial-up modem, DSL and ISDN.

ITU-T SSG IMT-2000

International Telecommunication Union-Terminal Special Study Group IMT-2000. This body is part of the International Telecommunications Union and offers a long-term vision related to the evolution of IMT-2000 systems and other systems over the next ten years.

ITU (International Telecommunication Union)

The most important telecommunications standards setting body in the world. In actual fact, it has no power to set standards, but if its members agree on a standard, it effectively becomes a world standard. The ITU presently consists of three major sectors that were established in 1992: Radio Communication (ITU-R), Telecommunication Development (ITU-D), and Telecommunication Standardization (ITU-T). The ITU took over the work formerly done by the CCITT (International Consultative Committee). The scope of the ITU's work is much broader than just telegraphy and telephony. It also includes IP voice, telematics, data, new services, systems and networks.

K

Kbps (Kilobits per second)

A speed measurement for the transmitting of data (see bps).

KB or Kb (Kilobyte)

1024 bytes, roughly equal to 8 kilobits.

KHz

A unit of measurement for frequency equal to 1000 Hertz.

L

LAN (Local Area Network)

A group of interconnected computer terminals or nodes, often co-located and managed from a single point as a single network. An example is a company’s internal information sharing and managing system.

LBS (Location-Based Services)

Services or applications that center around a user’s location in a mobile environment. Location-based services utilize location-sensitive technology, such as Global Positioning Satellite (GPS) or network-based solutions to deliver services or applications to wireless devices. Services include finder applications that let mobile phone users locate friends or family, businesses or landmarks. They can also deliver maps, directions, or traffic reports.

Location-based applications

Allow end users to find community services near their location such as hotels, restaurants, pharmacies, banks, gas stations, and other neighborhood services. Effective for both consumer and business markets.

Location-based service

A service that tracks a cellular phone user's location within the mobile network and provides a variety of additional services, e.g. automatically notifying an emergency center of a user's location when he/she is in an urgent situation; providing a discount rate when calling and receiving in a specific area, etc.

M

Mbps (Megabits per second)

Rate of transfer of data as measured in megabits.

MB or Mb (Megabyte)

Denotes approximately one million bits (1,048,576 bits to be specific).

Megahertz (MHz)

A unit of measurement for frequency equal to 1,000,000 Hz. (1 million cycles per second).

MMS (Multimedia Messaging Service)

A type of messaging comprising a combination of text, sounds, images and video.

Mobile IP

Mobile IP is an internet protocol designed to support host mobility. Its goal is to provide the ability of a host to stay connected to the internet regardless of location. Mobile IP is able to track a mobile host without needing to change the mobile host's long-term IP address.

Mobile radio network

Network using radio frequencies to connect mobiles to the fixed or mobile network.

Mobitex

An open global first-generation standard for narrowband wireless packet switched communications in the 900MHz (and lower) band for mobile terminals and fixed-to-point communications.

Modem

A device, which modulates (mo-) and demodulates (-dem) the signal carrier on a communications channel. When binary data is transmitted from one computer to another, modulation varies the carrier to represent the data during transmission, and demodulation interprets the variations of the signal so as to recapture the original information.

Modulation

A process by which information (e.g. voice, music, data) is added to a carrier signal, such that the signal receiver can extract the information via a process called de-modulation. Three commonly used modulation techniques are Amplitude Modulation (AM), Frequency Modulation (FM), and Phase Modulation (PM).

Mount

A mount is the device onto which a mobile antenna attaches. It is the mechanical and electrical interface between an antenna and the vehicle.

MO (Mobile Originate)

A call outbound or originating from a mobile device

MS (Mobile Station)

A mobile transceiver or mobile radio enabled device operating within a mobile network. Originally this term referred just to cell phones or handsets, but now includes mobile radio modems or any device containing a mobile radio modem as well.

MTBF (Mean Time Between/ Before Failure/ Faults)

The average time (usually expressed in hours) that a component works without failure. It is calculated by dividing the total number of failures into the total number of operating hours observed. The term can also mean the length of time a user may reasonably expect a device or system to work before an incapacitating fault occurs.

MTSO (Mobile Telephone Switching Office)

The central switch that controls the entire operation of a cellular system.

MT (Mobile Terminate)

A call inbound or terminated to a mobile device.

MVNO (Mobile Virtual Network Operator)

A company that, to end users, appears to be a wireless network operator. Unlike a standard wireless carrier, however, an MVNO does not own the Base Station Subsystem (BSS) that Mobile Network Operators (MNO) do. MVNOs also may not necessarily own other infrastructure one normally associates with an MNO, such as MSCs, and Home Location Registers (HLRs). More importantly, MVNOs do not hold licenses to radio spectrum; instead they purchase network capacity from wireless carriers that do hold licenses and which do operate the network infrastructure necessary for wireless phone communication.

O

OEM

Original Equipment Manufacturer.

P

Packet

When a quantity of data is to be transmitted over a network, it is sometimes divided into groupings of sequential bits called packets. Communications and error control information is then added to the packet prior to actual transmission. At the data destination, the extra control information is removed and the original information is reconstructed from the individual packets.

Packet Switching

A generic term for data communications techniques that move data from place to place in a network on an individual packet basis rather than by allocating a dedicated link. Packets can be routed independently so as to maximize network capacity and to take advantage of routing alternatives to work around network bottlenecks or outages. A method of transmitting messages through a communication network, in which long messages are subdivided into short packets and routes to its final destination.

PCB

Printed Circuit Board.

PCN (Personal Communication Network)

This standard corresponds to a high-frequency version of the GSM standard.

PDA (Personal Digital Assistant)

A handheld computer that can be used for simple Personal Information Management (PIM) functions. PDAs are becoming sophisticated enough to cope with complex functions like viewing and editing documents, spreadsheets, and presentations. PDAs run on a variety of Operating Systems, the most common of which are the Palm, Microsoft Pocket PC, Symbian, and Linux.

PDP (Packet Data Protocol)

The primary protocol(s) used for packet data communications on a packet data network, e.g. TCP/IP on the internet.

PDU (Protocol Data Unit)

OSI (Open Systems Interconnection) terminology for a generic "packet". A PDU is a data object exchanged by protocol machines (entities) within a given layer. PDUs consist of both data and control information that allows the two to coordinate their interactions.

Pico Cell

Very small cell in a mobile network for boosting capacity within buildings.

PIN

Personal Identification Number.

POS (Point-of-Sale) Terminal

A device that accepts credit/ debit card payments.

Protocol

Formal set of rules governing the format, timing, sequencing, and error control for data exchanges between two or more communications nodes.

PSD

Packet Switched Data is a technology where the communication “pipe” is shared by several users, thus making it very efficient. The data is sent to a specific address with a short delay. Charging is based on the volume of data and not the duration of the connection. PSD is the technology used for data communication across the internet and because it maximizes the use of the network. PSD will eventually be used even for voice communication.

PSTN (Public Switched Telephone Network)

The PSTN refers to the world's collection of interconnected, voice-oriented public telephone networks, both commercial and government-owned. Also known as Plain Old Telephone Service or "POTS".

PTCRB (PCS Type Certification Review Board)

Provides the framework within which GSM Mobile Equipment (ME) Type Certification can take place for members of the PTCRB. This includes determining the test specifications and methods to implement Type Certification for GSM Mobile Equipment. The goal of the PTCRB is if one carrier approves a Mobile Station (MS) then this MS is allowed to roam on all networks wherever they have roaming agreements in the GSMNA (GSM North America). www.ptcrb.org

Push Technology

A generic term applied to the methods, products or services used to deliver information to an internet user, without the user specifically requesting that item of information.

R

Radio Devices

Sony Ericsson’s Radio Devices are ideal for providing communications links between a variety of Wireless-Fixed and Wireless-Mobile applications.

RF

Stands for "Radio Frequency" and is a commonly used acronym to refer to a radio link, e.g. "goes over RF to the cell".

Router

A data switch that handles connections between different networks. A router identifies the addresses on data passing through the switch, determines which route the transmission should take and collects data in "packets" which are sent to their destinations.

RTS

Request To Send

RTT

Radio Transmission Technology. An air interface or standard for mobile phone transmissions.

Rugged Modules

Rugged and reliable enough for the automotive environment, Sony Ericsson’s Rugged Modules can be easily integrated into a wide range of industrial and commercial wireless solutions.

R&TTE or RTTE (Radio & Telecommunications Terminal Equipment)

Regulatory agency for the European Union. Purpose: Protection of the health (SAR) and the safety of the user. Governs protection requirements with respect to electromagnetic compatibility. Efficient use of the spectrum allocated to space terrestrial/radio communication. europa.eu.int/comm/enterprise/rtte

S

SCADA (Supervisory Control And Data Acquisition)

Used extensively by power, water, gas and other utility companies to monitor and manage distribution facilities. They are also used to monitor and control end user usage levels for purposes such as remote meter reading and load shedding.

Service provider

The company that sends you bills and has your signature on a contract.

SIM

Subscriber Identity Module

SIM Card (Subscriber Identity Module)

A subscriber removable printed circuit and chip set card that must be present in GSM phones before they are recognized by a GSM network. The SIM holds information identifying the subscriber to the network. The most recent generation of SIMs are application programmable as well.

SMS (Short Message Service)

"Text Messaging" is a mechanism that allows brief text messages (up to 160 characters) to be sent to the phone.

Synchronous

Type of transmission in which the transmission and reception of all data is synchronized by a common clock and the data is usually transmitted in blocks rather than individual characters. Can also mean that the data stream has the same capacity in both directions.

Synchronous mode

Standard for data transmission - data is transferred without start and stop bits together with a clock signal to synchronize the receiver. This mode gives higher data throughput than asynchronous mode, but can be less secure.

T

TCP/IP

Transmission Control Protocol (TCP), and Internet Protocol (IP) together define the basic rules for how information is transmitted across the internet (as well as on most LANs) in packet form.

TCP (Transmission Control Protocol)

Used to provide reliable data transfer between two IP endpoints. Not as fast as UDP.

Telematics

A generic term for a wireless network supporting the collection and dissemination of data. Static, or fixed applications including SCADA (Supervisory Control And Data Acquisition), which is used in the power utility industry for meter reading and load control. Mobile applications include vehicle tracking and positioning, on-line navigation, and emergency assistance.

Terminals

Sony Ericsson’s Terminals are stand alone units requiring minimal integration work into a host system. Adaptable and easy to use, they are ideal for use in Wireless-Fixed and Wireless-Mobile applications.

U

UMTS (Universal Mobile Telecommunications System)

This is almost universally subscribed to standard for the third generation and is generally based on W-CDMA (Wideband Code Division Multiple Access). UMTS was launched in 2002, but full services for the general public will not arrive until around 2005. It promises a permanent internet connection of at least 384kbps and up to about 2mbps, combined with highly integrated devices and a super-fast back end.

URL

The Universal Resource Locator is used to give Web addresses for HTML, VRML, WAV and other files. It simply contains the Internet address of the machine containing the data and the directory path to the file. The URL may also include information on what access methods to use.

V

VPN (Virtual Private Network)

A private data network that makes use of the public telecommunication infrastructure, maintaining privacy through the use of a tunneling protocol and security procedures. A virtual private network can be contrasted with a system of owned or leased lines that can only be used by one company. The idea of the VPN is to give the company the same capabilities at much lower cost by using the shared public infrastructure rather than a private one (expensive dedicated/leased lines).

W

WAN

Wide Area Network. A general term referring to a large network spanning a country or around the world. The internet is a WAN. A public mobile communication system is a WAN.

WAP (Wireless Application Protocol)

A family of protocols allowing mobile devices to access wireless services. WAP is a technology designed to provide users of mobile terminals with limited access to the internet, offering information in text form on the screen of your phone.

Wireless

Describes what used to be called "radio", but which typically also implies some of the newer cellular or digital radio technologies as well.

Wireless Access

A terminal access to the network that uses wireless technology.

Wireless Telemetry

Wireless Machine-to-Machine (M2M) communication, not including traditional data or voice-centric devices. Examples of wireless telemetry applications include: asset tracking, point-of-sale, vending, arcade games, supervisory control and data acquisition (SCADA).

WLAN (Transmission Control Protocol)

A short-range computer-to-computer wireless data communications network.

X

XML (Extensible Markup Language)

W3C's standard for internet markup languages.