Mawonekedwe a G.703 (Co-Directional G.703) amagawaniza kuzungulira kwa 64Kbps mu magawo anayi a mayunitsi, amagwiritsa ntchito "0101" kuyimira "0", "1100" kuyimira "1".Mwa kusintha kusintha kwa polarity ya malo oyandikana nawo, ma siginecha a binary amasintha ma sign atatu.