This attribute specifies whether to force outgoing reverse charged
calls. This attribute, if set to a value of yes forces reverse charging
on all outgoing calls (from the DTE to the network) using this
particular Dna unless the caller specifies a NUI in which case the
call is charged to the NUI. If set to a value of no then reverse
charging is not forced for outgoing calls.
This attribute is ignored if the corresponding attribute, outCalls is
set to a value of disallowed.This attribute must be semantically
consistent with the corresponding attribute, outReverseChargeCalls.