专用电报和电话业务

telephone and telegram service private telegraph private telephone service telephone wide area telephone service telegraph dispatcher and testing desk transmitting and receiving service collection and delivery service telegraph combined line and recording service capital flows and service payments choice of ends and service private telegraph service telephone and telegraph Postal Telephone and Telegraph International Telephone and Telegraph Corporation Nippon Telegraph and Telephone Public Corp.(NTT) post telephone and telegraph administration (PTT) private telegraph network Nippon Telegraph & Telephone