Abstract: A line double-end steady-state quantity distance measuring method and system based on an amplitude-comparison principle. According to the method and system, voltage values and current values of both sides of a line before and after a fault are collected (102), a voltage variable quantity and a current variable quantity of both sides of the line are calculated (103), and after a voltage phasor value and a current phasor value are determined according to the voltage variable quantity and the current variable quantity (104), the position of a short-circuit point is determined by performing iterative calculation on the voltage of the short-circuit point. The method is simple in principle, and can accurately recognize a fault point, achieving precise distance measurement of lines.

Abstract: A short message center system and an implementation method thereof are disclosed in the present invention, to implement the short message center system with multi-network multi-plane structure. The short message center system includes a virtual short message office and at least two short message offices. Wherein the short message office includes a signaling processing module, a service processing module and SMPP AGENT module, the virtual short message office includes a forwarding module and a returning module, the forwarding module is used to, when the module of short message office is faulted, forward a message to be processed by the faulted module to a corresponding module in another short message office to be processed, the returning module is used to return a processing result to the short message office with faulted module.

Abstract: A short message center system and an implementation method thereof are disclosed in the present invention, to implement the short message center system with multi-network multi-plane structure. The short message center system includes a virtual short message office and at least two short message offices. Wherein the short message office includes a signaling processing module, a service processing module and SMPP AGENT module, the virtual short message office includes a forwarding module and a returning module, the forwarding module is used to, when the module of short message office is faulted, forward a message to be processed by the faulted module to a corresponding module in another short message office to be processed, the returning module is used to return a processing result to the short message office with faulted module.

Abstract: A method and system for performing control on short message mobile terminated are disclosed by the present invention, wherein, the method includes: intercepting a route message of an inter-network short message, performing redirection processing, guiding the calling short message center to transmit the inter-network short message which is mobile terminated to a preset redirection location (S301); performing service control on the inter-network short message in the redirection location (S302). The present invention can realize the service control on the inter-network short message by the called network, thereby improving the security of the short message service, also realizing the service, such as the called value-added service and so on, and increasing the profit of the operator.