TD/RD: Indications of direction are used as qualifiers
and combined with each condition.
No:
None of the selected conditions are applied to events occurring in the
related direction.
Yes:
There is selection of events occurring in the related direction, in
combination with the conditions.
Abcd channels: One or more values of channels
can be selected and used as conditions selecting events reporting any
modification of the relevant a,b,c,d signalling bits.
No:
None of the selected conditions are applied to events occurring in the
related direction.
Yes:
There is selection of events occurring in the related direction, in
combination with the conditions.