The attachment of china cell phone jammer is added to the contract

The so-called 3G, in fact, it's all called the 3rd Generation, Chinese meaning is the third generation digital communications. In 1995 came the first generation of digital mobile phones can only make voice calls; 1996 and 1997 appeared the second generation digital mobile phones have increased capabilities to receive data, such as receiving e-mail or web page; the third generation of the main difference with the previous two generations is in voice and data transmission speed of the upgrade, 3G is the wireless communications and the Internet and other multimedia communications with a new generation of mobile communication systems. It can handle images, voice, video streaming and other forms of media, including web browsing, conference calls, e-commerce and other information services. The two parties decides to sign the contract of cell phone jammer next week.
To provide this service, wireless network must be able to support different data transfer speed, which means that in any environment can support at least 2Mbps (megabytes / second), 384kbps (kilobytes / second) and 144kbps transmission speed. 2G network bandwidth is 9.6Kpbs. 2.5G to 56Kpbs. 3G will have a wider bandwidth, the transmission speeds of up to 100-300Kbps, not only can transmit voice, but also transmit data to provide fast, convenient wireless applications. International Telecommunication Union (ITU) as early as May 2000 that identified WCDMA, CDMA200 and TD-SCDMA. Management representative of cell phone jammer will come to the company next month.
Three mainstream 3G standards, 3G technology written guidance document "2000 International Mobile Communications Plan" (referred to as IMT-2000).Relative to the first generation analogue phones (1G) and second-generation GSM, TDMA digital mobile phones, etc. (2G), 3G communication the name of the variety, the ITU defined as "IMT-2000" (International Mobile Telephone 2000) standards, European Telecommunications giants claimed it as "UMTS" (Universal Mobile Telecommunications System), which means Universal Mobile Telecommunications System. Standard of sustainable development, embodied in the 3GPP UMTS standard four versions: R99, R4, R5, R6. Form a large and relatively independent of the internal standards. WCDMA is one of the earliest and the most perfect choice for air interface, and for Europe, Asia and the Americas, 3G operators are widely used. The technical protocol of cell phone jammer is well prepared for signature.
WCDMA: the Wide band CDMA, meaning Wideband Code Division Multiple Access, its supporters mainly European-based GSM system vendors, including the U.S. and Europe, Ericsson, Alcatel, Nokia, Lucent, Nortel, and Japan's NTT, Fujitsu, Sharp and other manufacturers. The system can be set up in the existing GSM network, for system providers, and facilitate the transition, while the GSM system is quite popular in Asia for the acceptance of this new technology will be relatively high. Therefore, WCDMA has inherent market advantage. (Japanese mobile communications giant NTT DoCoMo was October 1, 2001 opening of the world's first standards-based 3G WCDMA network services now, Asia has become the fastest growing 3G area, followed by Europe, the United States as less enthusiastic and far behind in the technical preparation.) The attachment of china cell phone jammer is added to the contract.
WCDMA: WCDMA full name is (Wideband Code Division Multiple Access), the Chinese translation for "wide band code division multiple access ", WCDMA from Europe and Japan, the integration of several technologies it uses MC FDD duplex mode, and the GSM network has a good compatibility and interoperability as a new technology, it technical maturity in less than CDMA2000, but its advantage lies in the widespread adoption of GSM upgrade to its convenience, so much time recently also major manufacturers of all ages. WCDMA latest Asynchronous Transfer Mode (ATM) cell micro- transfer protocol, to allow for more transmission lines in a voice call, the call number from the current 30 to 300 lines in densely populated areas will not be prone to clogging. The two parties revised some clauses in the contract of cell phone jammer .