1)Signalling gateway, Convert any signalling between ITUT C7, ISDN PRI, Q.SIG,V5.2, R2; 2)Link: 16 SS7 links, 16 PRI; 3)16 E1; Description:Uphold the concept of carrier-grade embedded operating system, module structure. Single system for maximum 16 digital trunking E1 access.In the signalling conversion, small-scale applications such as tandem, it's the best low-cost,high efficiency. After has ...