The CD Town Pages were developed in response to requests on NTT's Orange Line for a telephone directory that could be accessed on a PC. The CD Town Pages combined the Town Pages information from 23 Tokyo districts on a single CD in a form that could be accessed using a PC. The optical disk (CD-ROM) was chosen because of its capacity to store information for more than 1,000,000 entries. As the first CD telephone directory in the world, the CD attracted attention as a new style of telephone directory to meet the needs of an advanced information society.

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