a3ComPortDialDebounceTimeDown
1.3.6.1.4.1.43.2.19.2.1.5
This object defines the amount of time, in seconds,
to wait after the primary Path has come up before
bringing the secondary, dial-up, Path down.
If the primary Path remains in the up state for this
amount of time, the secondary, dial-up, Path is
brought down.