... AD300D is a cost effective, powerful, reliable and stable signaling converter. Specification:·Signalling support: SS7, PRI, Q.SIG, R2 ... 1 RS232 console;·Link: 16 SS7 links, 16 PRI;·Switching Volume: 2048*2048;·Clocking accuracy: stratum 3 Clock;·Resources ... management, Intelligent route distribute and telephone traffic sharing;·Grouping switching management;·User identifier, can provide black and white ...