| 摘要 |
PROBLEM TO BE SOLVED: To effectively provide a caller's telephone number reporting and other infor mation to a user who is visually handicapped. SOLUTION: An electric communication switch 100 announces display information such as caller's telephone number reporting and other information using a speakerphone 104 of a user terminal 102. For example, with response to an arrival signal, a switch verifies 202 and determines to perform conversion 123 when the announcement of display information is activated for the destination. When the announcement is not activated, the switch displays 204 a caller's telephone number reporting on a display 103 of the transmitter terminal. If so, the switch activates 206 the speakerphone of the destination terminal, converts 208 the telephone number reporting to voice, and notifies 210 the telephone number reporting through the speakerphone. The switch suspends 214 the report of the telephone number by receiving a signal (for example, off hook) from the terminal, also stops the speakerphone, and connects a telephone call to the terminal according to a signal. The switch activates a number of speakerphones for making effective a loudspeaker, and announces the same information through the speakerphone simultaneously.
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