ccdTdrIfResultPairIndex 1.3.6.1.4.1.9.9.390.1.2.2.1.1

The local cable pair index. 'pair1to2' -- the pair with cable connectors 1 and 2. 'pair3to6' -- the pair with cable connectors 3 and 6. 'pair4to5' -- the pair with cable connectors 4 and 5. 'pair7to8' -- the pair with cable connectors 7 and 8.