... .2; 2)Interface Connector:16 E1, 1 10/100M network, 1 RS232 console; Description:NC-AD300D is designed and ... through E1(T1), with its embedded ARM9 CPU and Linux operation system. NC-AD300D is a cost effective, powerful, reliable ... V5.2;·Interface Connector: 16 E1(T1), 1 10/100M network, 1 RS232 console;·Link: 16 SS7 links, 16 PRI ... Call Back SystemFigure 4 Signaling CollectFigure 5 Recording System