- AcTel
- Sells international calling cards for Japanese customers. Also offers domestic phone services and provides table of rates.
- Aiphone
- Manufactures intercoms and door answering units, as well as security and communication systems.
- Brastel International Calling Service
- Allows users to transfer credits from one phone card to another. Also offers plans for frequent callers.
- Gigno System Japan Inc.
- Performs mobile content delivery operations. Provides digital books, games, mail enhancements and customized displays.
- Hikari Tsushin Inc.
- Engages in the telemarketing of telecommunications and Internet services such as fixed telephone lines and ADSL.
- i-Tel Long Distance
- Provides services for retail and wholesale customers. Posts international and Japanese domestic rates.
- SpinNet
- Offers voice communication services using IP technology. Also provides mail filtering, virus check, and spam blocking.
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