In the USSR the types of communication systems used and the means employed are developed according to a unified state plan. The most widely used system is the postal service. In 1974 it handled 8.9 billion letters (2.6 billion in 1940), 39.5 billion newspapers and magazines (6.7 billion in 1940), and 203 million parcels (45 million in 1940).
Widely used in the transmission of voice, data, and/or video services, SMF-28 fiber is manufactured to the most demanding specifications in the industry. SMF-28 fiber meets or exceeds ITU-T Recommendation G.652, TIA/EIA-492CAAA, IECPublication 60793-2 and GR-20-CORE requirements. Taking advantage of today's high-capacity, low-