The "Set Discount" service started on May 1, 1990 (Heisei 2). This gives a 50 yen per month discount to subscribers who use the Catch Phone service together with either a tone telephone circuit, call transfer, or the credit communication service. The number of Catch Phone subscribers has increased yearly since the service's introduction in 1970 (Showa 45). Introducing the "Set Discount" further promotes the use of network services such as tone telephone circuits, call transfer, and the credit communication service.

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