有关于系统呼损率丢包率随新呼叫接入门限的变化规律，用于判定新呼叫的介入指标-Call loss rate on the system packet loss rate with the new call admission threshold variation, used to determine the involvement of the new call indicator

用 听筒录取拨号音波形 利用matlab-fft算法识别所拨打的电话号码-To matlab-fft algorithm identifies the telephone number to call with a earpiece the admission dialing tone waveform