The Legislature finds and declares that a state communications system is vital to the security and welfare of the State during times of emergency and in the conduct of its regular business, and that economies may be realized by joint use of the system by all state agencies. It is the purpose of the Legislature that a state communications system be developed whereby the greatest efficiency in the joint use of existing communications systems is achieved and that all communication functions and activities of state agencies be coordinated. It is not the intent of the Legislature to remove from the Office control over the state telecommunications system intended for use by state agencies and the general public.