Telephone Services

KDDI provides high-quality telephone services through our reliable network.


  • By utilizing KDDI Group's optical-fiber network, telephone service with superb sound quality is provided at a reasonable rate.
  • Networks spanning across Japan, the U.S.A. and Europe are operated and maintained diligently to ensure utmost sound quality.
  • Various discount plans are offered including volume discounts based on total usage.
  • One-stop application and payment is available.
  • Overseas Japanese customers can make inquiries and assistance requests in Japanese.