... CTI control interface, supporting SS7, ISDN PRI, V5.2 signaling, can be programmed for all center and other value-added ... business. Feature:·Signaling support: SS7, DSSI, Q.SIG, R2, V5.2;·Protocol ... echo cancellation; Main feature· Support SS7,ISDN PRI,V5.2 Signaling· Flexible route management, inter-office management, Intelligent router distribute and ...