1)A single module with 2 E1; 2)Support SIP, H323, SS7, PRI; 3)Locates on the interface of PSTN and IP network; Detailed:VoIP Media Trunk Gateway contains a total of four models, MG800-102 is one of them. It contains single- module 2E1, support SIP, H323, SS7, PRI and so on. The dimension of this product is width 19-Inch, heighth- 1U. NC-MG800-102 is a new generation of small-capacity media ...