t7345s 发表于 2015-1-29 22:32:11

ETSI EG 202 009-1 V1.1.1 (2002-02)

ETSI EG 202 009-1 V1.1.1 (2002-02)
ETSI Guide
User Group;
Quality of Telecom Services;
Part 1: Methodology for identification of parameters
relevant to the Users


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admin 发表于 2015-1-30 11:45:36

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