Glossary
1G, 2G, 2.5G, 3G, 4G
The very first mobile telephony systems (1G, i.e. first generation) were analogue, and only used for voice transmission.
One example of a 1G mobile telephony system is NMT, which was mainly used in the Nordic countries. The second generation (2G) standards are digital, and although principally used for voice transmissions can also be used for sending and receiving data.
Examples of 2G standards are GSM and CDMA. GPRS, which transmits data twelve times faster than GSM and can be used for "always on" links to the Internet, for example, is a 2.5G technology.
3G provides the user with a broadband connection for transferring sound, images and video. It is 200 times faster than GSM. Examples of 3G technologies include W-CDMA, TD-SCDMA and UMTS. There is already discussion of a fourth generation (4G), which will be approximately 4,000 times faster than GSM.
5.8GHz
Due to the interference problems in the 2.4GHz frequency band, 5.8GHz is now used as an alternativ standard for cordless phones. It operates in the frequency band 5725-5850MHz. The phone is used primarily in North America.
AV
AV is an abbreviation for Audio-Visual, and is a general description of products used for sound and images.
Baseband
Baseband is a general term for part of the physical components of a wireless communication product. Typically, this would include the control circuitry (microprocessor), the power supply, amplifiers, etc.
bit/s (bps)
Just as the speed of a car is measured in kilometres or miles per hour, so the speed of data transfer is measured as bits per second, abbreviated to bit/s or bps. 1 kbit/s = 1,024 bit/s; 1 Mbit/s = 1,048,976 bit/s.
The data transmission speed of a GSM mobile telephone is 9,6 kbit/s, that of a fixed-line telephone/modem 56 kbit/s, GPRS up to 114 kbit/s, and UMTS up to 2 Mbit/s.
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Bluetooth™
This is a global technology standard that can easily create a wireless connection at distances of between 10 and 100 metres,
and thus replace cables.
Bluetooth is mainly used for mobile telephones, so the user can, for example, speak through a mobile telephone via a wireless Bluetooth headset. Bluetooth can be used for a number of other applications, such as exchanging business cards between two mobile telephones or as a wireless modem.
Maximum data transfer speed 720 kbit/s, or approximately ten times as fast as an ordinary 56k modem and telephone connection.
CDMA, IS-95, CDMA 2000 1x
CDMA is the North American answer to the GSM mobile telephone standard. It is a standard also used in a number of other, countries, especially in Asia. After GSM, CDMA is the most commonly used mobile telephone standard in the world.
CDMA CDMA 450 stands for Code Division Multiple Access and refers to the various technologies used in second and third generation (2G and 3G) mobile telephones. One of the advantages provided by CDMA is a relatively good and cheap use of network capacity.
IS-95 is a CDMA standard. CDMA 2000 1x is a development of the CDMA IS-95 standard, with a voice and data capacity twice that of IS-95. CDMA 450 is a standard which is becoming widespread in Asia and Eastern Europe.
Cellular market
The cellular market is a term used to cover all mobile telephony technologies and consists mainly of mobile telephone customers and subscribers, manufacturers and operators.
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Cordless Skype Phone
The world's first cordless 2-in-1 Skype Internet phone.
DCT 2.4 GHz / WDCT
DCT 2.4 GHz (Digital Cordless Telecommunication) or WDCT (World Digital Cordless Telecommunication) is a licence-free technology that makes it possible to speak wirelessly via an ordinary telephone connection. Unlike DECT, DCT 2.4 GHz complies with the requirements of the North American market.
DECT
DECT is a technology that makes it possible to talk wirelessly via an ordinary telephone connection at a range of up to 300
metres. This was originally an European standard, but it has subsequently also been adopted in a number of non-European
countries.
DPRS
DPRS stands for DECT Packet Radio Service. It is a wireless technology that can transmit and receive data based on DECT technology. DPRS allows the user to send and receive e-mails on a laptop PC wirelessly. The range is 50–300 metres, and the speed up to 552 kbit/s, giving sufficient bandwidth for most ADSL connections.
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EDGE
EDGE (Enhanced Data Global Evolution) is an extension of GSM. EDGE gives the mobile telephone user access to increased bandwidth and multimedia services, such as video clips. From the point of view of the operator, the advantage of EDGE is that this technology allows the existing GSM infrastructure to be expanded to EDGE, achieving data transfer speeds almost as high as those of UMTS without the need to buy a UMTS licence or build a completely new infrastructure.
GPRS
General Packet Radio Services (GPRS) is a mobile telephony technology for sending and receiving data. It runs over a GSM
infrastructure, meaning that existing GSM operators can upgrade their infrastructure to carry GPRS data transmissions.
GPRS enables surfing the Internet from a laptop PC via a GPRS mobile telephone. It is 12 times as fast as GSM. GPRS is one
of the 2.5 generation (2.5G) technologies.
GPS
GPS (Global Positioning System) is a system for determining the location of a car or a person with an accuracy of between 10 and 100 metres. This location can be displayed on a map in a car, or on the display of a mobile telephone. GPS is owned by the American Ministry of Defense and operates via 21 satellites that orbit the Earth.
GSM
GSM (Global System for Mobile communication) is the most commonly used mobile telephone system throughout the world. It is primarily used for voice communication, and is defined as a second generation technology (2G). GSM can, however, also transfer data and enable Internet use from a laptop via a GSM mobile telephone. Short text messages can also be sent and received with a mobile telephone, using SMS (Short Message Service), and now it is also possible to send images and video clips via MMS (Multimedia Messaging Service).
GSM/GPRS
GSM (Global System for Mobile communication) combined with GPRS (General Packet Radio Services) is known all over the world as 21.2 generation (2.5 G) GSM network. GSM/GPRS is the next step towards the 3G network. The GSM/GPRS network is suitable for supporting multimedia facilities because of the high data transmission time.
HomeRF
HomeRF stands for Home Radio Frequency. It is a short-range wireless technology that uses the licence-free frequency band 2.4 GHz. HomeRF supports both wireless audio and data, as it is a combination of WLAN and DECT.
IC
IC is an abbreviation for an Integrated Circuit, also known as a chip or chipset. The functionality of an IC is the heart of an electronics product, and the nature of the functionality depends on the particular product. An IC can, example, function either as a storage or a control device.
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IDC
International Data Corporation is a reputable supplier of market analyses to and about the IT and telecom sectors.
IEEE 802.11
802.11 consists of a number of different wireless data standards that can be used to link several devices, typically PCs, together in a network also called a Wireless Local Area Network. This means that several PCs and users can share the same ADSL connection or printer.
802.11 is an open standard developed by the Institute of Electrical and Electronic Engineers (IEEE) and currently consists of four different standards: 802.11, 802.11a, 802.11b and 802.11g. 802.11a operates on the licence-free 5 GHz frequency band, while the others use the 2.4 GHz band.
802.11b is currently the most widespread standard, and can transfer data wirelessly at a speed of 5.5 Mbit/s, with a range of 50–100 metres.
802.11a is four times faster than 802.11b, providing a speed of 27 Mbit/s and a range of 20–100 metres.
802.11g is the latest standard and is just as fast as 802.11a, but operates on the 2.4 GHz frequency band..
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Interference
Interference is the term used when two or more signals disturb each other and thus affect communication between two or more devices.
IP
Internet Protocol (IP) is a method or protocol for sending data over the Internet or even from one telephone to another (Voice over IP). The difference is that whereas in conventional telephony infrastructure, each connection occupies an entire channel, several IP data packets can share the same connection, just as lots of cars can use the same motorway at the same time, cf. "Silicon IP". RTX offers IP development within a range of different technologies; Bluetooth, DECT, 2.4GHz, TD- SCDMA...
IS-95
IS-95 is a CDMA standard.
ISDN
Integrated Service Digital Network is a standard established by ITU (International Telecommunication Union). enables digital traffic over existing copper wires. This means that a household can have two telephone numbers the same connection, and that it is possible to surf the Internet twice as fast as with an ordinary telephone link-and a 56k modem.
IT
Information Technology (IT) is a term covering the many diverse electronic means and methods for creating, storing, exchanging and using information in various formats, whether images, documents, telephone conversations, video.
LAN
A Local Area Network (LAN) consists of a group of PCs and other devices sharing the same Internet connection, printers and/or servers in a home or an organization.
SiTel SC14428 baseband processor
RTX cordless development are based on SiTel Baseband Processor for FP & PP DECT and WDCT
SiTel LMX4268 Radio Transceiver for DECT
RTX offers cordless product development based on SiTel LMX4268. The LMX4268 is a radio transceiver integrated circuit optimized for the Digital Cordless Telecommunications (DCT) system.
ODM
Original Design Manufacturer (ODM) is a business model involving the full design, development and manufacturing of a product according to the customer's product requirement specification. In the typical ODM model, the ODM manufacturer designs, develops and manufactures the complete product. For instance, based on detailed product requirement specifications from a customer, RTX Telecom has designed a Wireless Telephone Line Extender, including the development and handling of the manufacturing of the product.
OEM
An Original Equipment Manufacturer (OEM) is a manufacturing company developing and manufacturing standardized products or modules, which are then incorporated into end products using the reseller's brand name. In this case there is a low degree of customisation of the OEM product compared to an ODM offering. When a customer purchases an OEM product often only a limited number of changes are made to the product, for example limited to branding or labelling.
PABX
Once upon a time, telephone calls had to be connected manually by the switchboard operator. Such a system was known as a PBX, or Private Branch Exchange. These days, such connections are established automatically, and so the term Private Automatic Branch Exchange (PABX), i.e. an automated switchboard, is used.
Pervasive computing
Pervasive computing is that almost any device, e.g. shoes, tools, homes, can be imbedded with chips to connect the device to an infinite network of other devices. The goal of pervasive computing, is to create an environment where the connectivity of devices is embedded in such a way that the connectivity is unobtrusive and always available.
Phone Jack
A wireless phone jack gives you an extra telephone socket wherever you want in the house without any annoying or unsightly electrical wires. See also Wireless Phone Jack. For more information, go to Wireless Phone Jack.
Radio frequency (RF)
Radio frequencies are electronic waves used for wireless transmission. These can be used for communication between a mobile telephone and an antenna mast. For more information please click here
Repeater
A repeater receives digital signals electronically and sends them on to another device. This means that a DECT repeater can expand coverage, allowing DECT or 2.4GHz telephones to reach a wider area. For more information on RTXs DECT indoor repeater.
Research and development (R&D) VoIP
RTX is offering VoIP product research and development (R&D)
Research and development (R&D) Bluetooth
Bluetooth research and development (R&D) from RTX
Research and development (R&D) DECT
We offer DECT R&D design services - at a competitive price
Research and development (R&D) 2.4GHz
We offer 2.4Ghz R&D design services - at a competitive price
Research and development (R&D) 5.8GHz
If you want a competitive R&D 5.8GHz products in terms of both price and performance, then contact RTX
Research and development (R&D) GSM/GPRS
GSM/GPRS research and development (R&D) from RTX
Research and development (R&D) TD-SCDMA
TD-SCDMA research and development (R&D) from RTX
Silicon IP
Silicon Intellectual Properties (Silicon IP) is an expression used for the design or intellectual know-how used to make a chip (or IC) function in a given way.
SIP
Session Initial Protocol is a protocol which for instance enables telephone conversations via the Internet.
Skype
Skype™ is a programme allowing telephone conversations via the Internet. Calls to other Skype™ users are free as well as calls to regular telephone and mobile telephone numbers all over the world are at a low rate.
Software
Software is the general term for IT programs that make PCs and other electronic devices function. RTX offers software consultancy and software product development.
TD-SCDMA
TD-SCDMA stands for Time Division – Synchronous Code Division Multiple Access. TD-SCDMA is a third generation mobile telephony standard developed by CATT (China Academy of Telecommunications Technology) in collaboration with Datang and Siemens. TD-SCDMA enables surfing the Internet at a speed of up to 2 Mbit/s, or 35 times faster than an ordinary 56k modem and telephone line link. It also allows supremely efficient use of the infrastructure.
Turnkey design
Turnkey design refers to a finished product ready to produce. As the word implies, the customer only needs to "turn a key" to start the product, and RTX handles the entire product development process from specifications to finished product.
UMTS
Universal Mobile Telecommunications System (UMTS) is a third generation standard with a data capacity of up to 2 Mbit/s, 35 times faster than an ordinary 56k modem and standard telephone line. It is based on the world's most frequently used mobile telephony standard, GSM.
In various countries, several mobile operators have paid substantial amounts for UMTS licences. These operators hope that UMTS will enable them to launch a range of new interactive multimedia-based services, such as video conferencing, video on demand, and online route directions.
US DECT
US DECT is a special 2.4GHz version of DECT perfectly suited for the American market.
USB
Universal Serial Bus (USB) is a communications link between a PC and other devices such as modems, scanners and
printers. The advantage of USB is that it makes the devices virtually self-configuring, as USB is integrated into Windows
98 and later versions.
Wireless R&D
RTX specialises in R&D of advanced wireless communication solutions and OEM Products across the entire range of wireless technologies (DECT, DPRS, VoIP, IEEE 802.11a/b/g, 2.4GHz, 5.8GHz, NMT, GSM, GPRS, TD-SCDMA and Bluetooth)
VoIP
VoIP or “Voice over Internet Protocol” is a method or protocol employed to transfer speech via the Internet.
W-CDMA
Wideband Code Division Multiple Access is an optimisation of CDMA technology that also builds on technologies
familiar from the GSM mobile telephony standard.
W-LAN
A Wireless Local Area Network (WLAN) allows several mobile users to access and link to the same network within
an organisation or at home, and so share the same printer, Internet connection and o |
