Technical information Caller • Switches that can handle Navi Dial calls: All • IHandsets that can handle Navi Dial calls: Fixed-line telephones and public phones • Discount service: Discounts do not apply to calls made to Navi Dial numbers (TELE-CHOICE, TELE-WISE, and TELE-JOZU) Recipient (subscriber) • Switches that can handle Navi Dial calls: Digital switches • Service types that can be combined with Navi Dial: Normal subscriber line, incoming lines, and branch-proxy line INS Net Service: Communication/digital communication mode