NicatioNs, staNdard> (Formerly "RS-530") ANEIAserial liNestaNdard which specifies differeNtial liNe aNd siNge eNded commuNicatioNs. CombiNiNg EIA-422 aNd EIA-423, aNd defiNiNg a 25-piN coNNector for mechaNical coNNectioNs, this staNdard serves as a complemeNt to EIA-232 for high(er) speed data traNsmissioNs. (2002-10-05)