Response time of switching on or off is short for cell phone jammer

Traffic channel in different frequency bands allocated to different users. Systems such as TACS, AMPS systems. Frequency division multiple access communication system is the total band is divided into a number of equally spaced channels (also known as channels) assigned to different users. These channels do not overlap each other, and its width should be able to transmit a digital voice information, and no significant between adjacent channel crosstalk. FDMA, TDMA and CDMA difference. Frequency division multiple access (FDMA) is the use of frequency modulation of the multiple access technology. Traffic channel in different frequency bands allocated to different users. This new unit ofcell phone jammeris considered as the supplementary for the old customer to reduce the repeated investment.
Systems such as TACS, AMPS systems. Time division multiple access (TDMA) is the use of time division multiple access technology. Traffic channel at different times assigned to different users. Such as GSM, DAMPS and so on. CDMA (Code Division Multiple Access) is the use of spread spectrum CDMA technology. All users at the same time, the same frequency band, depending on the traffic channel coding gain. The current digital mobile communication network through which access methods are FDMA, TDMA systems (GSM, DAMPS). Spectrum efficiency in the simulation system is about three times the capacity is limited; in voice quality 13kbit / s coding is also difficult to achieve the level of wired cell phones, FTDMA comprehensive system of higher business, data and voice can be integrated. The tranquility inside cinema, recording room, performance hall can be kept through cell phone jammer.
However, terminal access speed is limited (up to 9.6kbit / s TDMA system without soft switching function, which can easily dropped calls, affecting the quality of service z; TDMA system of international roaming agreement is subject to further refinement and development. Which is not modern TDMA cellular mobile the best wireless access communications, and CDMA Code Division Multiple Access technology perfectly suited to modern mobile communications network required large capacity, high-quality, integrated services, soft switching, international roaming, etc. for commercial applications are now 2.5G mobile communication from 2G towards 3G technology is the convergence of technology, breaking the circuit-switched technology for 2G data rate constraints, the introduction of packet switching technology, which allows data transfer rate of a qualitative breakthrough. The communication between prisoner and visitor can be shielded in the prison for cell phone jammer
Is a range over between 2G and 3G technology. GPRS, HSCSD, WAP, EDGE, Bluetooth (Bluetooth), EPOC are the 2.5G technology and other technologies. GPRS (General Packet Radio Services) of Chinese as a general packet radio service, has been hailed as the GSM 2.5G, is a system based on GSM wireless packet switching technology to provide end to end, wide-area wireless IP connection speed of 53.6kbps . With "real-time online", "according to the amount of billing," "quick login", "high-speed transmission," "freely switch" advantages. More simply, GPRS is a high-speed data processing techniques, methods based on "group" in the form of sending data to the user's hand. Although the GPRS network as the existing GSM transition to third generation mobile communication technology transition, but in many ways it has significant advantages. Response time of switching on or off is short for cell phone jammer.
By using "packet" technology, user access is relatively stable, short-term to avoid unnecessary distress caused. In addition, the use of GPRS and WAP and the Internet in different ways, as with WAP Internet access at home, the first "dial-up connection", while the Internet can not be used after the cell phone line, but it is more advantageous GPRS, download data and calls can be the same time. Technically, the sound transmission (ie, calls) to continue to use GSM, and data transmission can use GPRS, so, put the cell phone applications to a higher level. cell phone jammer has no radiation towards the human body.