Image Number 5 for United States Patent #6522736.
A communication apparatus for an exchange network having a service of notifying the telephone number of a caller during a call-receiving operation can recognize respective callers of past call-receiving operations. During a call-receiving operation, a communication partner's telephone number detection unit detects the telephone number (identification information) of the caller, and stores the detected telephone number in a nonvolatile RAM (random access memory). The RAM can store a plurality of sets of identification information, which are recorded and output in the form of a list by a recording unit.
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