Two explicit attributes discardPriority and transferPriority are
created to replace H.01 and H.30 in the group
VcsDirectCallOptionsProv of this file. The migrate escape here
(DcComponent::migrateFaxEscape) propagates the old
provisioning data under H.01 and H.30 into discardPriority and
transferPriority.
The rule of the above propagation are: 0 in H.01 is equivalent to
discardPriority 0; 1 in H.01 is equivalent to discardPriority 1. And
0 in H.30 is equivalent to transferPriority normal; 1 in H.30 is
equivalent to transferPriority high.
Please refer to discardPriority and transferPriority for more
information on how to use them.