The power line of energizing cell phone jammer doesn’t need the centralized wiring

 With the development of intelligent network, intelligent network gateway can achieve interoperability, intelligent network and the Internet with the Internet, intelligent network and broadband integrated services digital network the combination of B-ISDN, intelligent network of tomorrow will be more intelligent. ISDN is the Chinese name of the integrated services digital network, China Telecom will be "narrowband integrated services digital network" (N-ISDN) known as "Link." cell phone jammersystem can be switched on or off centrally. "Link" digital transmission and digital switching technology, telephone, fax, data, images and other integrated services digital network in a single transmission and processing, to provide users with the basic rate (2B D, 144kbit / s) and Primary Rate (30B D, 2Mkbit / s) interfaces. Basic Rate Interface consists of two independent work of B channels (64Kkbit / s) and one D channel (16Kkbit / s). One B channel is generally used to transmit voice, data and images, D-channel used to transmit signaling or packet information. "Link" is a comprehensive digital network telephone based communications network evolved, can provide end-to-digital connection can carry voice and non voice services, users can access through the network of multi-user network interface. The power line of energizing cell phone jammer doesn’t need the centralized wiring.
"Link" is not only able to provide circuit-switched services, but also provide packet switching and non-exclusive exchange line services, customers can choose according to need to be flexible and work with existing telephone networks, packet networks to interoperate. "Link" to service to provide users with three categories: bearer services (nothing to do with the type of user terminals, such as circuit-switched bearer services and packet-switched bearer services, etc.); user terminal services (such as digital telephones, four types of fax, data communications, video communications, etc.); rich supplementary services (such as calling / called user identification number display / restriction, call waiting, call forwarding, multi-user numbers, sub-address, three-way communication, etc.). The power line to energize cell phone jammer can be used as the power supply or transmitting remote control signal.
ISDN has the following features. Integration of communication services: the use of a subscriber line, while the Internet can call or send and receive faxes, the same as with two telephone lines, by configuring the appropriate terminal equipment, video conferencing function can also be achieved. Achieve high reliability, high-quality communications: Use the "Link", because of information between the terminal fully digital, noise, crosstalk and signal fading distortion is very small, the data transmission bit error characteristics than the phone line has improved at least 10 times, so that the communication of high quality. Through the "Link" can be 64kb / s or 128kb / s rate using the Internet network. "Link" can also provide a wealth of additional features: Caller ID, call waiting, call hold, call transfer, multi-user numbers, sub-address, the terminal can be moved and so on. Affordable: the use of a single network to provide multiple services, ISDN significantly improved utilization of network resources to provide low cost services to users, ISDN significantly improved utilization of network resources in order to lower costs provide services, users do not have to purchase and install different equipment and different network access lines, only one interface can be a variety of services, significant savings in investment.