This is to enable the DNIS global management.
If the 'dnisGlobalEnabled' is set to true
then the DNIS management is controlled by the
policy set up on the Network Management station to
manage the resource plant as a whole.
If the 'dnisGlobalEnabled' is set to false,
then the DNIS limitation is controlled by the
policy set up in the local profile under
Ethernet->Mod Config->DNIS options.
Note that this option only exist on the
MAX 400x/600x Series. As for TNT all incoming
calls will be accepted.