A telecommunications system and method which includes a transmitter, a first code generator for generating a noise code and a second code generator for generating a string-based code, wherein data which is transmitted by the transmitter is coded by the first and second code generators before transmission. The mount has an annular rubber spring et in an outer metal casing, encasing an inner metal portion having a central mounting means. The restraining member is disposed over side or at edges of the gusset plate and connected to the structure member, so that the lateral deformation of the gusset plate can be controlled and the buckling strength of the gusset plate can be enhanced by the restraining member, and the laterally restrained joint structure is capable of reinforcing a building.