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Presented By:
ASHUTOSH MALAWAT
(Final Year, E&C)
Maharishi Arvind Institute of Engineering and Technology
Introduction :
The Department of Telecom¬munications had announced ambitious plans for the addition of 7.5 million lines to the existing 5.8 million by the end of the 8th plan (1992-97) as compared to only 3.2 million in 1982-92.
Consequent upon delicensing of the Telecom. equipment and throwing it open to foreign investments, six new technologies were planned to be valida¬ted. These foreign suppliers set up their valida¬tion exchanges, each of 10,000 lines capacity (including two RSUs of 2K each), at different places, e.g. EWSD of Siemens (Germany) at Cal¬cutta, AXE-10 of Ericsson (Sweden) at Madras, Fetex-150 of Fujitsu (Japan) at Bombay, OCB-283 of Alcatel (France) at Delhi etc.
EWSD is one of the technologies selected for TAX and is also the technology for Intelligent Network and Mobile Communication. This article gives a general introduction to the EWSD system, its features, architecture and facilities.