ITU-T Recommendation G.172 Transmission systems and media. Transmission plan aspects of special circuits and connections using the international telephone connection network. Transmission plan aspects of international conference calls

ITU-T Recommendation G.169 Series G: transmission systems and media, digital systems and networks. International telephone connections and circuits - Apparatus associated with long-distance telephone circuits. Automatic level control devices ITU-T Recommendation G.165 General characteristics of international telephone connections and international telephone circuits. Echo cancellers ITU-T Recommendation G.164 Transmission systems and media. Apparatus associated with long - distance telephone circuits and other terminal equipments. Echo suppressors ITU-T Recommendation G.173 Transmission systems and media. Transmission plan aspects of special circuits and connections using the international telephone connection network. Transmission planning aspects of the speech service in digital public land ... ITU-T Recommendation G.174 General characteristics of international telephone connections and international telephone circuits. Transmission performance objectives for terrestrial digital wireless systems using portable terminals to access the PSTN ITU-T Recommendation G.175 Series G: Transmission systems and media, digital systems and networks. International telephone connections and circuits - Transmission plan aspects of special circuits and connections using the international telephone ...