Chapter 4 Managing the Passport 8672ATME Module with Device Manager 59Using the Passport 8672ATME ModuleFigure 16 ATM tabTable 8 describes the ATM tab fields.Table 8 ATM tab fieldsItem DescriptionifIndex Interface Index.MediaType mmf (multimode fiber) or smf (single-mode fiber)LineSpeed For OC-3c, the operating speed is 155.52 Mb/s; for OC-12c, it is622.08 Mb/s.NumVpiBits For OC-3c, 11 bits split between NumVpiBits and NumVciBits.NumVpiBits cannot exceed 6 bits for OC-3c.For OC-12c, 13 bits split between NumVpiBits (default is 4) andNumVciBits (default is 9). NumVpiBits cannot exceed 8 bits forOC-12c.NumVciBits This field is read only. It takes remaining bits from NumVpiBits. Forexample, if NumVpiBits is 3 for OC-3c, then NumVciBits is 8.ScrambleEnable Sets the port to scramble the data by clicking the box.
