... Linux operation system, NC-AD300D is a cost effective, powerful, reliable and stable signalling converter. Specialty: * Signaling support ... SS7 links, 16 PRI * Switching Volume: 2048 x 2048 * Clocking accuracystratum 3 Clock. * Clocking ... ISDN PRI, ETSI ISDN, Q.SIG, V5.2, R2 * Multi router, inter-office management, ... /E1 Signaling Converter NC-AD300D which support the conversion among SS7, ISDN PRI, R2 ...