https://tt-hardware.com/en/news/fixed-line-telephony-via-the-mobile-network-why-is-it-more-stable-than-voip-for-small-businesses-/
Fixed-line telephony via the mobile network: why it's more stable than VoIP for small businesses |...
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https://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/pressrelease/2026/3/13_2.html
Approval of Regional Telecommunications Services (Wireless Fixed-Line Telephony) Using...
On Wednesday, January 22, 2025, the Ministry of Internal Affairs and Communications, the Ministry of Economy, Trade and Industry, and the Digital Agency held...
fixed line telephonytelecommunications servicesapprovalregionalwireless