- 通行(Passage)
- 通常通信電波（Radio Wave usually used for Notification）
- 通信系 (Communications System)
- 通信憲章（Constitution of the International Telecommunication Union
- 通信条約（Convention of the International Telecommunication Union）
- 通信操作 (Communication Operation)
- 通信の秘密 (Secret of Communications)
- 通信・放送役務 (Communications and Broadcasting Service)
- 通信・放送身体障害者利用円滑化事業 (Facilitation Program for Disabled Persons' Use of Telecommunications and Broadcasting Services)
- 通信・放送融合技術 (Technologies for Communications and Broadcasting Convergence)
- 通信・放送融合技術開発システム (System for Development of Technologies for Communications and Broadcasting Convergence)
- 通信量等(Amount of Traffic, etc.)
- 通話(Telephone Call)
- 通話可能端末設備(Telephonic Call-capable Terminal Facilities)
- 通話可能端末設備等(Telephonic Call-capable Terminal Facilities, etc.)
- 通話チャネル (Call Channel)
