1)8 E1, Media transfer between PSTN and IP network; 2)Conversion from ISDN PRI, SS7, V5.2 to SIP; 3)T ... module supports maxima 4E1);2. Complete Signaling (SS7/ISDN PRI/V5.2/Q.SIG/R2/SIP/T.38);3. The ... PSTN and IP network, providing signaling transform between SS7, ISDN PRI, V5.2 signaling and SIP Protocol, as well as ... picture of this model:Diagramm of its application: 1 E1 PRI to SIP Gateway NC-MG900