The dealer or customer can master installation of cell phone jammer under the instruction

Users can use anytime, anywhere wireless communication terminal to obtain instant information on the Internet or the company's Web site, the real wireless Internet access. Is the abbreviation of Code Division Multiple Access CDMA (Code Division Multiple Access), which is a branch of the digital technology - spread spectrum communication technology to develop a new and sophisticated wireless communications technology. It can meet the demand for mobile communication capacity and quality of high demand, with high spectrum efficiency, voice quality, confidentiality, call drop rate is low, electromagnetic radiation is small, large capacity, wide coverage, etc., can significantly reduce investment and reduce operating costs. CDMA technology is based on the principle of spread spectrum technology, will be transmitted with a certain signal bandwidth information data. More installation position should be added for cell phone jammer .
With a bandwidth much larger than the signal bandwidth, high-speed pseudo-random code modulation, so that the original data signal bandwidth is expanded, and then modulated by the carrier and send out. Receiver use the same pseudo-random code, and receive signals for bandwidth-related processing, the broadband signal into the original information data is despread narrowband signal, in order to achieve information and communication. CDMA 1X is the first phase of cdma2000 (rate higher than the IS-95, less than 2Mbps), the forward link data rates up to 144Kbps, the introduction of packet-switched network elements that can support mobile IP services. In the third generation mobile communications in the wireless interface to international proposals, the most widely noted that W-CDMA and cdma2000. cdma2000 is the United States to the ITU's third generation mobile communications air interface standard proposal is IS-95 standard to the third-generation evolution of technical system solutions. The new research and development center of cell phone jammer can accommodate 100 hundred people.
The use of spread spectrum CDMA 1X rate of SR1, meaning that the forward channel and reverse channel are used chip rate 1.2288Mbit / s direct line of single-carrier spread spectrum mode. Therefore, it can be easily and IS-95 (A / B) backward compatibility to achieve a smooth transition. Because CDMA 1X coherent demodulation with a reverse, fast forward power control, transmit diversity, Turbo coding and other new technology, its capacity is much higher than the IS-95. Under the same conditions, the Mandarin sound business case, the capacity is roughly twice the IS-95 system. CDMA 1X network can carry voice services as a platform, or as a packet data wireless access to Internet hosting platform, that can provide traditional voice services, it can provide users with end to end packet transfer mode data services. The video conference of cell phone jammers plays an important role.
This is a narrow-band CDMA (CDMAIS-95) broadband technology from CDMA technology, the main push by the United States, raised the standard from CDMA IS-95 (2G)-CDMA 2000 1X-CDMA 2000 3X (3G) evolution strategy . One CDMA 2000 3X and CDMA 2000 1X The main difference is that the application of multi-carrier technology, so by using the three-carrier bandwidth. GPRS is General Packet Radio Service the title, General Packet Radio Service, is a system based on GSM wireless packet switching technology to provide end to end, wide-area wireless IP connection. Popular speaking, GPRS is a high-speed data processing technology, the method is based on "clusters" in the form of sending data to the user's hand. GPRS is 2.5 generation mobile communication technology, is China Mobile's GSM network to 3G technology mainstream. The price negotiation of mobile phone jammer will achieve a good result.
GSM dial-up relative to the original circuit-switched data transmission mode, GPRS is packet switching technology, with "real-time online", "according to the amount of billing," "quick login", "high-speed transmission," "freely switch" advantages. Commercial applications are now 2.5G mobile communication technology is the convergence from 2G towards 3G technologies, breakthrough technology for 2G circuit-switched data transmission rate constraints, the introduction of packet switching technology, which allows data transfer rate of a qualitative breakthrough is a cross between between 2G and 3G over technology. Since 3G is a very huge project, which involves multi-level and complex, from the current 2G into 3G can not click on the connection between, so there range between 2G and 3G 2.5G. GPRS, HSCSD, WAP, EDGE, Bluetooth (Bluetooth), EPOC are the 2.5G technology and other technologies.  cell phone jammer has the specific standard.