acLogicalHdlcIndex 1.3.6.1.4.1.2785.2.4.4.1.1.4

The acLogicalHdlcIndex is the index for this table for the specified type. For DS1 and DS3, the index is the same as the index in the timeslot table that this entity corresponds. For the case of Appian DCC, the index simply a number from 1-4.