美利体育登录入口官网:ITU-T G.113-2001
语音处理导致的传输损伤 G系列:传输系统和媒介,数字系统和网络 国际电话连接和电路 整个国际网络传输
Transmission Impairments Due to Speech Processing - Series G: Transmission Systems and Media, Digital Systems and Networks International Telephone Connections and Circuits - General Recommendations on the Transmission Quality for an Entire International