This object is used to initiate manual dial or hangup
action to be taken by the dialup port. If this is set to
dial(1), the port will attempt to dial out on its Primary
Dial path using the first destination phone number stored by
a3ComPortDialPhoneListPhoneNo. If no entry exists, then the
number stored by a3ComPathDialNum will be used.
If this is set to hangUp(2), then port will attempt to hangup
all its active dial paths.
If this object is read, the value other(3) will be returned.