... design and multitasking operations ,faster acquisition,processing and anylsis c.USB,Ethernet and CF flexibility d.Dial , number keys and function keys ... 2 slots,easily upgrade and field changeable b.Support OTDR,Ethernet ,SDH/PDH/OTN protocol analyzer and various test modules c ... continuously operation as per Bellcore TR-NWT-001138Power supplyAC/DC adapter,input:100-240VAC, 50-60Hz, 1.6A max, output: ...