REMOTE DATA ACCESS BY TELEPHONE

摘要

Remote data access method relies on recognition of predetermined calling line identities, by an interface unit 57. Upon recognition, the interface unit sends back data to the calling party from a data source such as a utility meter. Such meter readings are returned to a server 51. The server 51 may poll many different households by telephone. The interface unit 57 is arranged to intercept meter reading calls without the telephone ringing in the household. The system needs no changes to be made to the exchange in the telephone network.