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| Dreams | Дата: Пятница, 02 Октября 2015, 6:54:42 PM | Сообщение # 1 |
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| GPRS is an acronym for the packet data service on a radio channel, stands for General Packet Radio Service. GPRS maximum data transfer rate is 115 Kbps, which is nearly 12 times faster data transmission in networks GSM. The essence of the GPRS service is to establish permanent connection via a GPRS phone to the Internet, and the subscriber can make and receive calls without interrupting the Internet connection. An important advantage of using GPRS is that no charge applies for the connection (the phone stays permanently connected to the network), but for the amount transmitted through the telephone information. If you are not going to connect your phone to any devices, the main scope of GPRS in the phone is the browsing of WAP pages (Internet sites designed for phones supporting WAP), it is also possible to send SMS through the GPRS network. In addition, through GPRS, you can make your phone logos, ringtones and games. When you connect a GPRS phone to a laptop or regular computer, you can get Internet access at a speed comparable to a conventional modem. This opens up more possibilities: email, Web pages, ICQ and other messaging systems and with all other applications that use the Internet.
It remains to add that the maximum speed of 115 Kbps, which in practice is difficult to achieve. It's all in the structure of the GPRS. The maximum speed achievable, if there is sufficient traffic from the operator with the Internet and the base station, with which is connected the cell phone, there are free channels. The maximum speed you will get during a minimal boot the mobile operator networks, i.e. at night.
http://rerter.ucoz.com/forum/4-18-1
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| Dreams | Дата: Пятница, 02 Октября 2015, 6:55:31 PM | Сообщение # 2 |
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| GSM is an abbreviation for digital standard for mobile communications via radio, stands for Global System for Mobile Communications. GSM phone, in fact, represents a fusion of computer and radio station. Speech is digitized, encrypted error-correcting and cryptographic algorithms, and in this form is transmitted. By temporary sealing of the channels simultaneously on the same frequency can work 8 phones. GSM is the next stage of development of mobile communication of standard NMT after. NMT is an analog standard for mobile communications. It was transmitted in analog form and were not encrypted, i.e. talking on this phone was very easy to intercept and eavesdrop. Currently GSM is gradually replaced by replaced it by the CDMA standard.
The GSM standard uses multiple frequency bands.
Uses GSM 1800 frequency 1710-1880 MHz (common in Europe, Russia, Australia, Pacific Asia).
GSM 900 (EGSM) uses frequency 890 - 960 MHz (common in Europe, Asia, Russia).
1900 GSM uses frequencies around 1900MHz (distributed in the U.S. and Canada).
At the present time in Russia used the network as GSM 1800 and GSM 900. Cell phone determines which network he is "more comfortable" to work. Switching between the networks and base stations for the subscriber to be invisible.
The main purpose of GSM - transmission of spoken language. But it also implements the functionality of pager (SMS) and functions of transmission-reception of information (Fax, GPRS, HSCSD).
http://rerter.ucoz.com/forum/4-17-1
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| Dreams | Дата: Пятница, 02 Октября 2015, 6:56:17 PM | Сообщение # 3 |
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| JSC ALTEL ("ALTEL") is a subsidiary of JSC "Kazakhtelecom", the first national cellular operator in Kazakhstan, working in the market of telecommunication services since 1994.
In 2010, ALTEL was the first in the country which introduced 3G Internet, and in 2012 took place the first commercial launch of LTE technology in Kazakhstan under the brand of ALTEL 4G.
On 15 may 2014 ALTEL has announced the launch of innovative LTE/GSM/UMTS network. It allows you to enjoy high-speed data transfer by LTE technology on the smartphone, voice calls will be automatically transferred to GSM/UMTS.
Kazakhstan's first convergent network with simultaneous support of 4G/3G/2G is deployed in more than 500 settlements of Kazakhstan with a total population of about 11 million people, representing 63% of the population.
Based on advanced technologies and equipment, multi-technology network provides usage of a number of innovative features and development. Thus, in the range of the entire GSM/UMTS network ALTEL subscribers available technology "HD-voice". Built a network prepared from a technical point of view to the provision of voice services over LTE technology and VoLTE is the next step in the development of networks of the 4th generation LTE Advanced.
Data network "ALTEL" is based on the optical network of "Kazakhtelecom", uses a backbone network built on IP technology which offers significant advantages in network capacity and data transfer speed.
Today ALTEL is a recognized leader in the mobile data market in Kazakhstan. Developing a network of the fourth generation, building from scratch the ecosystem of 4G, we have made mobile Internet accessible to millions of people in our country.
Together with our customers we are moving to a new technological level. We first made this important step, opening 4G in the interests of Kazakh businesses and the economy of Kazakhstan.
Information is the most valuable thing that can possess people, take care of your time choosing a professional link from АLTEL 4G GSM.
http://www.altel.kz/
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