t7345s 发表于 2014-12-25 22:00:37

ETSI EG 201 050 V1.2.2 (1999-02)

EG 201 050 V1.2.2 (1999-02)
ETSI Guide
Speech Processing, Transmission and Quality Aspects (STQ);
Overall Transmission Plan Aspects for Telephony
in a Private Network

admin 发表于 2014-12-26 12:44:24

谢谢您的分享，金币已奖励
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