... 192 FXS+FXO; 3)Signaling support:SS7, PRI, Q.SIG, R2, V5.2 Description:NC-AD300X Programmable PABX is designed and ... value-added business. Feature:·Signaling support: SS7, DSSI, Q.SIG, R2, V5.2;·Protocol support: SIP, H.323, RTP/RTCP;·Codecs ... sharing· Grouping switching management· ser identifier, can provide black and white name list or connect to the database· Powerful calling function ...