Type of Service Plan
Voice Transmission Services
Subscriber Telephones
Additional Installations (1.74) million subscribers
Relocations 4.47 million subscribers
Social-Welfare Telephones (Silver Phones)
800 units
IC-Card Public Telephones
20,000 units
INS-Net Digital Services
INS-Net 64 Subscriber Lines 1,502,000 circuits
INS-Net 1500 Subscriber Lines 20,000 circuits
Conventional Leased Circuits (53,000) circuits
High-Speed Digital Transmission Circuits 49,000 circuits