DECT technology


DECT (Digital Enhanced Cordless Telecommunication) is a phone system and as its predecessor, the GSM (Global System for Mobile Telecommunication) has been standardized by European standards (ETSI - European Telecommunication Standards Institute). The DECT standard was originally developed by RES 03 committee (Radio Equipment and Systems Committee). The Basics of DECT are specified within the series of documents ETS 300 175 which is described
the radio access technology (1992).

DECT technology is newer and thus more evolved than that of GSM.

The DECT system is not a mobile phone system but a system cordless telephony, and was a phone designed for use household or business that is moving within a defined geographical and / or limited by a radio coverage provided by one or more antennas. (eg a apartment, a palace, a villa, an airport, etc..). If the radio coverage permits be allowed to migrate from one area to another. Typically the radio coverage may be owned by a different subject by providing the telephony service. For example, coverage radio of an airport is provided by the airport owner and the telephony service is offered by the fixed telephone to which the that company is the customer.

More generally the transition from a radio coverage to another, if they do not are adjacent, it is only possible by the coverage by telephone that you customers.

This just described is a first scenario with the commercial old analog cordless phone was not possible: the phone (and therefore a client) that moves within the first radio coverage (the airport) uses a cordless telephone, a mobile (and thus a customer) who moves between different coverage areas also uses a service mobility.

Data and Internet DECT revived


Proponents of DECT (Digital Enhanced Cordless Telecommunications) are convinced that this communication system will have a lively future but also full of satisfactions. In particular it is considered that this standard has to be able to state requirements in the markets and applications where low costs are a key factor of success. This is an opportunity for developing countries, not yet touched by the applications of DECT technology, but also for European countries, an area in which this standard has a good chance of development in the enterprise as well as at the ' households. The great news for the standard is to identify nell'avvento of the Internet: the Net has opened a market of multimedia applications and data with great potential for development. The DECT technology is half particularly suited for transmitting data, although up to now has been little used for that purpose. This is one more reason why at this stage DECT become a true commodity technology ", that is no longer just a telephone terminal for end users but also results in modular wireless technologies, such as inclusion in the control systems and security if must be connected and manageable from Web E 'growth in this area to which the advent of technologies and versatile in terms of reliability and security but also economic, should give a strong boost. Certainly the competition in the field is not lacking, but there is also natural caution, especially after the Italian misadventure with Fido service. Then the DECT technology was glorified, then be "repudiated" later, but for strategic and political, not technological. But that was a voice, while the prospects that are opening up a matrix are different: that of convergence.

A versatile

DECT is a digital wireless technology known and grown in Europe, from where it has been diversifying towards developing countries. Unlike GSM, which is a radio access technology, DECT has a defined architecture as designed to interact with many types of networks: PSTN, ISDN and GSM of course. The markets in which the standard has shone so far are those of most cordless home (it is estimated that more than half of the equipment sold today is in accordance with this standard, with that in Germany are close to 80%).

The other area of success is that of the corporate PBX. Wireless systems have found use in particular types of organizations - such as distribution centers, airports and hospitals - where communication is of particular importance, together with the quality of voice transmitted.

The use of radio coverage made with DECT technology has improved the quality of service provided to customers, reduce downtime on the production lines and optimize the data transmission.

In office environments, the integration of handset between the terminals operated by a switchboard made it possible to improve the mobility of employees.

The scope WLL (Wireless Local Loop) is the third area of use: in this respect, it is estimated that one third of the lines of wireless local loop sold in the last two years have been spent in DECT technology, which therefore has the leadership in the field. Recently, the major efforts of ETSI, the regulatory body that has developed DECT, we have come to use different profiles, according to the matrix of convergence: ISDN and DECT, DECT with GSM (dual mode), DPRS (DECT Packet Radio Service) and DMAP (DECT Multimedia Access Profile), two standard developed for transmitting data.

Growth potential

In Italy were sold in 1999 about 1.8 million lines derived from PABX, almost all type of corded. E 'that is, failure, once again, the uptake of solutions based on wireless terminals. The impact of the wireless handset, in other words, continues to remain below 2% of the total. Probably spread to sustained rates of mobile phones and the lack of knowledge of the possibilities of solutions integrating wireless communications equipment in "fixed" have hindered the development of terminals based on DECT technology, which, however, retain a considerable potential for growth, considering penetration rates achieved in other nations. For products in DECT technology for housing is in place a robust recovery of the market, at least to hear members of the DECT Forum. These are some of the numbers on the situation at the end of 1998: 13.5 million products delivered and installed of which 12.4 million related to residential terminals, 513 thousand relating to handset operated by PBX and 633 thousand lines of wireless local loop installations. In 1999 the total number would be increased to about 20 million. That source also adds that DECT is 53% with the technology of cordless phones for greater weight in Europe (in the German market, the most important, the penetration rate has reached 80%).

In 1999 were sold in Italy more than 1.4 million cordless (excluding parallel imports and without taking account of the equipment installed in companies and supported by wireless PABX). The share of DECT is estimated at around 44%. To dominate the national scene are mainly three companies: Siemens Telematica, Brondi and Philips, which alone controls about 60% of market share that rises more than 70% considering only the DECT segment. A curious thing is that a large slice of the market is reserved for distribution of Telecom Italy, but Wind and Infostrada are moving with dynamism, with products Brondi first and second with Samsung.

The new generation

The development of the network and ISDN products should benefit from integration with the DECT technology. Siemens is convinced: second from the German group of the main advantages of this combination is to identify value added services, providing applications voice / data integrated in the use of ISDN Supplementary Services via DECT without delay, in the simplicity of the plug and surf "and" plug and phone ".

Ascom is among the companies that they too get the "plug, surf & phone" with the products of the line voo: doo that the Swiss company presented the first package wireless voice and data ISDN world. This solution consists of base station, PCMCIA and ISA cards, cordless phones obviously conform to ISDN standards, software and some other accessory, with a range of about 300 meters. Ascom also added to have managed the design so as to simplify the installation of this system operates in a frequency range (1.8 GHz) protected. The solution, which harmonizes well with the evolution of the Internet, in a sense anticipates trend to characterize the future: the mobility and flexibility. The special cordless telephone EURIT 133 ISDN is in line with this innovation: the device offers menu-driven functions, has a display capable of displaying graphics, and a memory that stores the last 30 calls. He also extended feature called 15 hours of talk time or 140 hours of battery life in standby mode.

Ascom is a member of DECT-Mmc (Dect MultiMediaConsortium), a consortium that has taken the effort to promote the products conform to the dictates of the innovative standard DMAP (DECT Multimedia Access Profile) which include telephone systems, wireless printers DECT with Ethernet modules for professional applications (Canon has been active in this area); boards for particular uses and diverse as the FreePad of Dosch & Amand, which integrates voice and multimedia, multimedia televisions equipped with DECT-ISDN connection. Basically the message from this consortium, which involves also the Italian and Ericsson, Italtel and Urmet, is to say that the DMAP modules can be used in almost all products in information technology and telecommunications: printers, personal computers, scanners , modems, cameras, mobile Web, Web TV, set-top boxes, information appliances, as well as in different types of cards.

Developed by German Dosch & Amand, the DMAP is a new generation of DECT standard.

The system enables the wireless ad hoc communication between different electronic devices with a bandwidth of 128 kbps, which is to ISDN, in addition to dynamic bandwidth and compatibility with international telephony DECT.

In particular, its supporters point out, the next-generation DECT offers the possibility of the uniform use of multimedia services in wireless mode.

The effort produced to this technical solution has been significant and very complex. Now, however, must give the DMAP also a future business and the birth dell'Mmc, which is an industry consortium, aims to achieve this goal. Franz Dosch, chairman of the consortium and chairman of the German company that has developed, is convinced that the DMAP has the potential to revolutionize the entire market for the mobile DECT communication, because in the future frequency bands will become more expensive while sharing frequencies, which is one of the innovative aspects of the new standard, is a strong reason to appeal.

The new generation of DECT, in other words, no longer only as an alternative to broadcast radio to the cable, but as a component of the mobile communications in all respects.

Wireless LAN, and strong growth expected in the U.S.

In the U.S. wireless LAN users are currently estimate the Cahners In-Stat Group, more than 2.3 million in 2003 and should tenfold: 23 million seems an exorbitant figure, but from next year analysts expect a sharp acceleration in 'adoption of this technology.

Wireless local area networks are indeed as an ideal solution for SoHo users and small businesses in general: the takeoff is related mainly to the simplicity of installation, which the companies active in this market promise to make it quickly. Meanwhile the costs of the solutions should fall further. At that point, the portability of the network off a demand for wireless and small-small businesses will also extend to branch offices of large organizations, business and non business.

The representatives of Cahners emphasize an important aspect that will be fuel to the demand for wireless LAN. The new supply chain technologies are connecting a growing number of non-administrative employees to corporate resources, for example, are connected many production environments, such as factory or warehouse. In such contexts, wireless solutions are able to meet with this trend, even boosting efficiency and more to the strategy of the supply chain.

The "easy connectivity"

Certainly we need to give practical applications for completion of these statements and dell'Mmc companies are working for them.

The expected development in the wireless LAN (see the box on this page. 56) should be an opportunity for the greedy and DMAP desta interest among the various projects underway, the test that Canon is leading in different parts of Europe in 'field of the "easy connectivity."

The activity is conducted by researchers at Rennes, where you will find the resources for research and development of the Japanese giant, using just the updated version of the DECT standard. The purpose of the program is to promote multimedia applications and interoperability of all devices connected.

In fact, the goal is more ambitious because the range of Canon uses a lot of network technologies (IP, ISDN and Ethernet), the idea is to get to get a wireless capability to adapt to these standards; The DMAP has been identified as the attachment mechanism.

Regarding applications, Canon has identified two areas of operation: the area home and office. In the latter, in particular, the Japanese company provides a strong demand for wireless LAN extensions, to provide a fast and easy access to services such as corporate intranet in meeting room presentations and ad hoc. Among the companies have long been active in the area of DECT are Alcatel, with many achievements to his credit, but the standard is affected Ericsson Business Mobile Networks, in the context of the mobility is extremely broad, the group is doing. Ericsson says it more than ever convinced that DECT technology can play an important role in data transmission services to small and medium volumes of traffic in local areas, provided to solve the problem of interoperability, which considers the critical factor of success more important.

Looking ahead Ericsson sees even matching between DECT and WAP (Wireless Application Protocol) for the creation of Internet services to value added, and between DECT and USB (Universal Serial Bus) in a scenario of networking environments for Home / SoHo which is working ETSI.

Lucent Technologies, for its part, sees a link DECT efficient and ultimately also for new access to the Internet. In particular, stresses the company, the main advantage offered by DECT-based data is to expand the communications services offered on the same radio infrastructure at a marginal cost. Lucent also happy to see the commitment of ETSI to ensure continuity of DECT in the context of third generation mobile.

The dangers of wireless phone to Health


Wireless phones * DECT standard, emit high-frequency waves all day and also the night that you call or not.
Before, cordless phones work with the standard CT 1, is also high frequencies, but without pulses and transmits only during the time of appeal.

The wireless phone standard DECT * emits frequencies between 1880 and 1900 Mhz.
It sends pulses at frequencies of 100 Hz, the station of the apparatus (where the base recharges your phone) delivers non-stop.

Electromagnetic radiation caused by the phone DECT GAP * or ** are similar to those of mobile phones (mobile) whose influence reached levels more and more critical.

The pulsations of radiation in standard DECT phones pass through walls, so also through the body!

Children, elderly, sick and pregnant women are at risk.

(*): DECT is a standard phone which stands for Digital Enhanced Cordless Telecommunication.
(**): GAP is also a standard parallel to DECT, it ensures communication between phones of different brands.

Studies on the effects of electromagnetic radiation on the body shows:

The damage to the gene pool. (DNA)
Influences on the central nervous system.
A weakened immune system of the person.
A malfunction of the hormonal system of the individual.
An increased risk of cancer.
A tendency to sterility, abnormalities in the development during pregnancy.

Health problems that you may be following a prolonged exposure of too much high-frequency waves:

Nervous disorders: headaches, sleep disturbances,
fatigue, concentration difficulties, exhaustion, depression, irritability.
Behavioral disorders in children.
Persistent noise in the ears (tinnitus) and dizziness.
A disruption of the view.
The alteration of blood especially in children.
Cancer, brain tumors.

How to limit the risks?

> Use another telephone wire, this time in fashion is vintage so why not take advantage of to limit the risks of air on your health with a telephone wire fashion.
It is less convenient but less harmful to health.

> Using a wireless phone with the standard CT 1, look on the manual or the instructions of your wireless phone to know what is the standard used. A cordless telephone CT 1 emits high-frequency waves but without pulses and transmits only during the time of appeal.

New Panasonic Cordless Phones Feature DECT 6.0


DECT 6.0 is an interference-reducing, range-extending technology that also helps increase battery life on the phones.

Panasonic, under its Panasonic Communications Co. of North America (PCCNA) division, will begin selling at the end of this month a 2009 cordless phone model range that carries DECT 6.0 technology across the entire lineup, said Erica Martinez, product manager.

The Energy Star-certified 6400 and 7400 series carry an array of product features exclusive to Panasonic, which “add cell phone convenience to cordless,” she said. Martinez also added that Panasonic’s lineup includes a strong selection of SKUs in the higher end of the category, making the brand “strong in the $99- and-up market slot.”

On the 6400 range, Talking Caller ID states the identity of the caller so the owner doesn’t have to look at the phone before deciding to answer it. Call Block, another feature unique to Panasonic that carries over from the 2008 range, allows the owner to create a “call block” list that sends a busy signal to unwanted callers added to the list. Silent Mode allows programming of each handset to ring or remain silent at specific times of day.

The 7400 series carries these features and adds Choice Mail, a feature that lets the person checking voicemails to cherry-pick which to listen to without having to go through the list and listen serially to each message. It also has an adjustable font sizing feature that lets the user enlarge the type of an entry for better legibility. The phones also comply with the Telecommunications Industry Association’s TIA-1083 standard, an interference-reduction technology that makes the handsets compatible with hearing aids.

Another Panasonic system due out soon, the KX-TG1062M single-line digital cordless answering system with two handsets, offers functionality through the base unit even when there is a power outage.

Panasonic, said Martinez, plans to make additional model announcements geared to the needs of the high-end residential market around the time of the CEDIA Expo this fall.

Cordless Phones - DECT 6.0 That Meet the Hype


DECT cordless phone technology (Digital Enhanced Cordless Telecommunications or 1.9 GHz) really does live up to the hype. Although all DECT 6.0 cordless phones are not created equal, most DECT phone models provide a winning balance between exceptional voice clarity and suitable-to-fantastic range.

Why is DECT so special?
Digital Enhanced Cordless Telecommunications is nothing more than a digital wireless communication technology that operates at 1.9 GHz. It's popular with manufacturers (a good thing for consumers) because it's a global standard, enabling them to produce fewer models to satisfy the needs of all countries. In general and all other technology components being equal, the lower the frequency, the longer the physical range you'll get with your cordless phone. Phones that operate at lower frequencies (remember your old 49 MHz cordless phone from 1988) are also prone to much more interference, which significantly reduces voice clarity. When manufacturers launched phones at the higher frequencies, the opposite occurred as you might expect. Voice clarity improved dramatically with digital 5.8 GHz models, but physical range became a genuine problem.....especially in all the growing number of McMansions in the U.S. Some DECT 6.0 cordless phones can get up to 1000 ft of range from the base outdoors.

Though frequency is only one feature to examine in the search for a cordless phone, a DECT 6.0 phone is the best bet in today's cordless phone market as long as all included features meet your needs. It's also dedicated to cordless communication in residential, commercial and public environments, so you're unlikely to be interfering with other home electronics. Besides premium voice quality and extended range, DECT technology is inherently more efficient with battery life. It's not uncommon to see some DECT models with up to 12 hours of talk time, which can be ideal for those who work at home.
How to Select DECT Cordless Phones?
First and foremost, look for a global brand you can trust. Because DECT is a global standard - where launching a U.S. product is much less expensive than in the past, you'll see lots of "import brands" hitting the market. Price points vary depending on brand and features, but most DECT phones are at the same or lower cost than the 5.8 GHz phones they're succeeding. Consider your usage as well. Will you be using the phone in a home office where you'll need a headset jack? Surprisingly, only some DECT models have included a headset jack. Will you need multiple handsets? While most models are expandable, be cautious that a few are locked into the one included handset. There are many more features available, but most DECT phones handle core functionality (excellent voice quality and good range) really well. Look for reviews and comparisons online and consider asking your retailer for recommendations.

Digital Enhanced Cordless Telecommunications (DECT)


Digital Enhanced Cordless Telecommunications (DECT), known as Digital European Cordless Telephone until 1995, is an ETSI standard for digital portable phones (cordless home telephones), commonly used for domestic or corporate purposes. It is recognised by the ITU as fulfilling the IMT-2000 requirements and thus qualifies as a 3G system. Within the IMT-2000 group of technologies, DECT is referred to as IMT-2000 Frequency Time (IMT-FT)

DECT was developed by ETSI but has since been adopted by many countries all over the world. The original DECT frequency band (1880 MHz–1900 MHz) is used in all countries in Europe. Outside Europe, it is used in most of Asia, Australia and South America. In the United States, the Federal Communications Commission in 2005 changed channelization and licensing costs in a nearby band (1920 MHz–1930 MHz, or 1.9 GHz), known as Unlicensed Personal Communications Services (UPCS), allowing DECT devices to be sold in the U.S. with only minimal changes. These channels are reserved exclusively for voice communication applications and therefore are less likely to experience interference from other wireless devices such as baby monitors and wireless networks.

DECT Features

Typical abilities of a domestic DECT Generic Access Profile (GAP) system include:

* Multiple handsets to one base station and one phone line socket. This allows several cordless telephones to be placed around the house, all operating from the same telephone jack. Additional handsets usually have a battery charger station instead of a base station. The additional handsets do not require additional telephone sockets or additional transceivers
* Interference-free wireless operation to around 100 metres outdoors. Operates clearly in common congested domestic radio traffic situations. For instance, generally immune to interference from Wi-Fi networks or video senders, Bluetooth technology, baby monitors and other wireless devices.
* Ability to make internal (intercom) calls between handsets.
* An extended range between the telephone and base (allowing greater physical distance between the two devices)
* Extended battery talk-time, sometimes up to 24 hours

DECT 6.0

DECT devices made for use in the U.S. use the term DECT 6.0 to distinguish them from both DECT devices used elsewhere and U.S. cordless equipment operating in the 900 MHz, 2.4 GHz and 5.8 GHz ISM bands. It is a marketing term coined by Rick Krupka, Director of Cordless Products at Siemens, when he was pushing the FCC to accept DECT in the US and is not a spectrum band reference. The term "6.0 GHz" for DECT 6.0 phones is incorrect as they operate at 1.9 GHz, but the term DECT 1.9 might have confused customers, as they may solely interpret larger numbers as signifying a better (or later) product.

DECT Cordless Phones Technology


DECT - Digital Enhanced Cordless Technology phones are cordless phones that can be used to talk around the house. The technology used in earlier cordless phone models resulted in sound quality that was not exceptional. With digital technology, sound is now as crystal clear as that of a cabled phonephonephone.

DECT is a digital wireless technology which originated in Europe, but is now being adopted increasingly worldwide, for cordless telephones, wireless offices and even wireless telephone lines to the home. The younger brother of GSM - Global System for Mobile - it is by contrast a radio access technology, rather than a comprehensive system architecture; DECT has been designed and specified to interwork with many other types of network, such as the PSTN (conventional telephone networks), ISDN (new digital and data phone networks), GSM (mobile phone networks) and more.

Back in the early 1980's, when analogue cordless phones began to reach European shores from the Far East, the techies quickly cottoned on to the fact that if you did it 'digitally' it could be better - less crackle and interference, more phones within a small space, security against eavesdroping, the ability to move throughout buildings by 'handing over' between 'base stations', and more.

By late 1987, two erstwhile technologies had emerged aspiring to this role - the UK CT2 standard and the Swedish CT3. In the true spirit of European compromise it was decided by ETSI - the European Telecommunications Standards Institute, to develop a new standard - DECT - which would take the best of CT2 and CT3 and go far beyond either. Thus, in January 1988, was DECT born.

DECT phones work from a base station, usually with a single handset. Some DECT phonephonephone models allow additional handsets to be added to the base station. You can also have additional cordless handsets in different areas of the house. This is ideal if you have a home office or work from home. DECT phones are also excellent if you have a large garden and want to take your phonephonephone outside with you.

The range of the handset will depend on the phonephonephone itself. The point of the cordless phonephonephone is that you can walk around free from the base station. Most cordless phones have a range of around 300 meters (about 984 feet), but new digital technology is being upgraded daily to expand that range.

You can also talk to another person within the house using DECT phones, rather like a walkie talkie device. Battery life will depend on the amount of money you spend on the phonephonephone. More expensive handsets allow you to talk for around eight hours with a single charge up. When not in use, the handsets can retain a charge for around 100 hours. Most DECT phones have a battery alert device that signals when battery power is low.

Cordless phones have come a long way in design since the early days. DECT phones are very stylish and come in a range of designs. Some top of the range DECT phones will set you back a lot of money for the design alone. High budget DECT phones are made by some of the top technological manufacturers available – well known names that are cutting edge in other fields, such as audio and visual equipment. The designs are sometimes stunning, but so are the price tags.

There are only so many functions that a DECT phonephonephone can perform, so top end phones are not that different from budget models. The only difference will likely be in the design quality. Some DECT phones now look like flip mobile phones with back-lit keys, text functions and access to email. The most important factor with a DECT phonephonephone is audio quality. If this is not up to scratch, then any extra money spent may well have gone towards design.

What is GAP?
GAP Generic Access Profile; this is a common interface for phones to talk to base stations. In theory, any GAP-compatible phone can be used with any other GAP phone. Some features such as shared phonebooks, Intercom, Call transfer and Caller ID may not work, however you will be able to make and receive calls with out a problem. It is always wise to use the same manufacture when choosing a GAP phone to connect to your existing system but not necessary. Most DECT phones are GAP compatible but not all so when buying a DECT phone check the features for GAP Compatible.