1.DS3 frame structure:ITU-T G.752,ITU-T G. ... .703 3.power:220V+-10%,50HZ,25W Network AdaptorBrief introductionJD-NAT-1100 network adaptor is the head end equipment for ... transmission, without ATM adapting processing, and directly mapping DS3 frame, via 45Mbits/s interface to transmit through networkl DS3 ... frame is in accordance with ITU-T G.752, ITU ...