backup up power , TPS ,tisaes.Taltechint,securepowersyetm, secure power system , DPS, SPSM, 5G innovative , efficient powering solutions backup power , sleep upstream upstream noise DPS power backup DPSV safecom upstream rf noise suppression module. rf suppression catv ingress noise RFoG RF noise Power backup FFTC FFTH FTTC 5747888 US 5747888