KT, 시내전화에 LTE망 쓴다…규제샌드박스 특례 지정

KT's regulatory sandbox approval to deliver fixed-line telephone services over LTE networks marks a significant shift toward technology-neutral regulation and infrastructure modernization. The pilot project enables cost-efficient service expansion to underserved rural and remote areas where traditional wireline installation is economically unfeasible. This sets a precedent for reducing PSTN maintenance burden while improving universal service accessibility for vulnerable populations.