... transfer between PSTN and IP network; 2)Conversion from ISDN PRI, SS7, V5.2 to SIP; 3)T.38 fax ... Each 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 ... 700 series), 24 bits/14 bits PC, ISUP/TUP;-ISDN-PRI (ITU-T Q.931, Q.921);-V5.2 (ITU- ...