| 摘要 |
PURPOSE:To prevent an illegal use of a system by connecting a terminal equipment to a host processor, only when a combination of an ID number which has been inputted, and a telephone number of a pay station line which has been used is registered in a number registration table. CONSTITUTION:A number registration table 12 is provided on a communication control processor 2, and a telephone number of a terminal equipment 4 for constituting a system, and an ID number are made to correspond to each other and registered. When a host processor 1 is called by using the ID number of the terminal equipment 4, from a terminal equipment 5 which is not registered regularly in the number registration table 12, a number checking means 11 searches a combination of the ID number which has been inputted from the terminal equipment 5, and a telephone number of a pay station line which has been used, from on the number registration table 12. When this combination exists on the number registration table 12, it is connected to the host processor 1 as a regular use, and when it does not exist, it is regarded as an illegal use and the connection is rejected. |
