These tests exercise the following FAX to FAX paths:
+--Modems-+-----------TDM/RTP-----------+-Modems--+ | \ / | | \ / | T.30 <---+ T.38 gateway T.38 gateway +--->T.30 | \ / | | \ / | +---T.38---+----+----UDPTL/RTP----+----+---T.38---+ \ / +----------TCP----------+
T.30<->Modems<-------------------------TDM/RTP------------------------->Modems<->T.30 T.30<->Modems<-TDM/RTP->T.38 gateway<-UDPTL/RTP->T.38 gateway<-TDM/RTP->Modems<->T.30 T.30<->Modems<-TDM/RTP->T.38 gateway<-UDPTL/RTP-------------------------->T.38<->T.30 T.30<->T.38<--------------------------UDPTL/RTP->T.38 gateway<-TDM/RTP->Modems<->T.30 T.30<->T.38<--------------------------UDPTL/RTP-------------------------->T.38<->T.30
1.6.1