Page 537 of 1814International ISDN PRI Feature description and administration538DID-to-network CallingContentsThe following are the topics in this section:Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 537Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538Feature operation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538Feature descriptionThis feature facilitates Direct Inward Dialing into the private ISDN. TheDirect Inward Dial (DID) call will be treated as though the entire ISDN is alarge PBX.DID calls entering the network at the local node (that is, the node on whichthe destination set resides) are unaffected by the feature’s operation. In thiscase, treatment of the DID call is the same as with the stand-aloneconfiguration. The DID-to-Network Calling feature affects only those DIDcalls which enter the network at a node other than the destination set’s node.Routing of the DID call across the ISDN will be the same as the routing of anetwork call originated from within the network. (An additional informationelement is sent with the call set-up message, to indicate that the network calloriginated from a DID trunk.)
