1)4 to 32 FXO/FXS; 2)1 or 2 E1; 3)Signaling support: SS7, ISDN PRI, R2, Q.SIG, V5.2; 4)PBX function; 5)Caller ID display; Description:NC-AD300E PBX is designed by Nice Communication with new concept and combination our rich experience in the telephony technology with providing E1, FXO, FXS interface.NC-AD300E PBX has its powerful signaling protocol handling and exchanging capability, supporting ...