The principle of cell phone network SMS, the mobile Internet settings, cell phone batteries introduced. GSM is the abbreviation of Global System For Mobile Communication, means Global System for Mobile Communications, GSM is what we call. This system is a Committee for Standardization by the major European telecom operators and manufacturers design and development. GSM is a brand of China Mobile digital mobile telecell phone network has well-known user. Network number 139,138,137,136,135 belong to the GSM digital cell phone network, and only 139,138 first opened, and later expanded to so many. Their ability to signal reception, dial-up method, coverage, roaming areas, use is consistent. The expert is setting the parameter of the processing machine of cell phone jammer .
Here?s what his technique, he uses a digital modulation technique, one of the keys is time division multiple access means that each user at a certain time on the selected carrier frequency and received the information only at a specific time. The GSM main features are as follows burglar copy ability, network capacity, the number is rich in resources, call clarity, strong stability is not easy to interfere with sensitive information, call dead ends, low power consumption of cell phone and so on. China Mobile or China Unicom, a large part of the current volume of business voice communications. Continues to mature along with the continuous promotion of the GPRS and CDMA, the GSM market share is declining. With the development of science and technology, no one wants to choose a single function, style is not trendy enough classic machine. This is true, in addition to some of the nostalgia of the old user, use the GSM cell phone is more low-income people and the vast rural areas. The self protection can avoid the happening of over voltage for cell phone signal jammer .
Although the forecast 2G to 3G is a long process, but the pace of 2.5G network to gradually replace the GSM, the GSM in the end sustain long no one can say. I believe we must also remember that a former expensive models, the MOTO V998. Next we talk about GPRS. The concept of GPRS is General Packet Radio Service. Chinese is the General Packet Radio Service is a system based on GSM wireless packet switching technology to provide end-to-end wireless WAN ip connection. Compared to their original GSM dial-up circuit-switched data transmission mode, GPRS is packet-switched technology with real-time online, according to the amount of billing, fast landing, high-speed transmission, and freely switch, etc. In simple terms, GPRS high-speed data processing techniques, methods based on the grouping in the form of sending data to the user?s hands. The price of our cell phone jammer has the obvious advantage.
The practical application of the GPRS has those? I am sure is familiar with. Including mobile email, multimedia messaging services, mobile entertainment, mobile chat, location-based services, business services, mobile search service, mobile e-commerce. We often use the mobile Internet most frequently seen is the WAP, then the WAP then what is it? WAP is a Wireless Application Protocol, a global open protocols. WAP defines a common platform to convert the information field of the HTML language on Internet WML description information displayed on the screen of the cell phone or other handheld devices. He does not rely on any network exists, today?s WAP service may continue to exist after the advent of 3G, but the transfer rate is faster, also with the upgrade of protocol standards. The director announced the production task of cell phone jammer in the meeting.
Next, simply say CDMA, I am less interested in CDMA. CDMA is Code Division Muliple Access, the Chinese meaning of Code Division Multiple Access. CDMA and GSM, but also belong to a mobile communication system, he is a new branch of the digital technology ? the development of spread spectrum communication technology, wireless communications technology. CDMA does not give each caller is assigned a certain frequency, but each channel can provide the entire spectrum. CDMA call for each group of quasi-random sequence of numbers to be encoded. His feature is switch rate high, clear voice call almost no noise, not easily dropped, green cell phone, confidentiality, multimedia technology. A meeting should be held before starting manufacture supervision of cell phone jammer .
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Source: http://www.cellphonesignaljammers.com/the-self-protection-can-avoid-the-happening-of-over-voltage-for-cell-phone-jammer/
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