VASC Software and Media Company (VASC) is a wholly owned subsidiary of Vietnam Post and Telecommunications (VNPT) which currently owns and controls the national network on behalf of the government, most of the access network, the largest international gat
TELES Communication Systems is a leading provider of equipment, solutions and services to fixed, fixed-mobile convergence and Next-Generation-Network (NGN) service providers. With more than 160 carrier network customers and millions of voice ports deploye
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