t7345s 发表于 2015-1-29 22:33:23

ETSI EG 202 009-2 V1.1.1 (2002-02)

ETSI EG 202 009-2 V1.1.1 (2002-02)
ETSI Guide
User Group;
Quality of telecom services;
Part 2: User related parameters on a service specific basis


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admin 发表于 2015-1-30 11:45:39

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