... and IP network; 2)Conversion from ISDN PRI, SS7, V5.2 to SIP; 3)T.38 fax and conference; Advantage ... supports maxima 4E1);2. Complete Signaling (SS7/ISDN PRI/V5.2/Q.SIG/R2/SIP/T.38);3. The best ... IP network, providing signaling transform between SS7, ISDN PRI, V5.2 signaling and SIP Protocol, as well as media transfer ... ISUP/TUP;-ISDN-PRI (ITU-T Q.931, Q.921);-V5.2 (ITU-T G.964, G.965)-CAS ·VoIP ...