ITU-T. P. 310. Series P. Telephone transmission quality, telephone installations, local line networks. Subscribers' lines and sets. Transmission characteristics for telephone band (300-3400 hz) digital telephones
ITU-T. P. 310. Series P. Telephone transmission quality, telephone installations, local line networks. Subscribers' lines and sets. Transmission characteristics for telephone band (300-3400 hz) digital telephones
- Geneva ITU 2003