Iimpawu ezahlukeneyo kunye neemodeli zamatyathanga e-escalator step zineparameters ezahlukeneyo.
Nceda qiniseka ukuba uqhagamshelane nenkonzo yabathengi ukuze uqinisekise uphawu okanye iiparameters phambi kokuthenga; sinokunika isikhokelo sokukhethwa kwemveliso.