Sesebelisoa se sebelisang theknoloji ea reverse direction multiplexing ho bokella lipotoloho tse ngata tsa E1 ho fetisetsa data ea Ethernet ea 4Channel 100BASE-TX.E ka hlokomela phetoho lipakeng tsa 1 ~ 8 channel E1 le Ethernet optical interface, ho etsa hore likanale tsa E1 li hokahane le Ethernet optical interface.