Additional Information
| Title | 3 電子交換方式と新電話サービス |
|---|---|
| URL | https://www.soumu.go.jp/johotsusintokei/whitepaper/ja/s48/html/s48a03070203.html |
| Description | |
| Format | HTML |
| File Size | |
| Last Modified Date | June 6, 2023 |
| License | CC-BY |
| Copyright | |
| Language |
| Title | 3 電子交換方式と新電話サービス |
|---|---|
| URL | https://www.soumu.go.jp/johotsusintokei/whitepaper/ja/s48/html/s48a03070203.html |
| Description | |
| Format | HTML |
| File Size | |
| Last Modified Date | June 6, 2023 |
| License | CC-BY |
| Copyright | |
| Language |