... can realize the complex between PSTN and PBX call control.Module structure design,real-time embedded operating system, non-blocking switching ... -AD300GW provides 32 analog line(FXO/FXS) and 8-way wireless GSM. Specialty:·2 E1, signaling support:SS7,ISDN PRI,Cas,V5 ... can be flexibly configured through change the models;·1-8 GSM wireless lines.we can flexibly configure the number of lines through ...