This object specifies the forward signal indicating that ANI digit transmission is complete and that the calling party's identity must not be revealed to the called party, for example for privacy/blocked-caller-ID calls. This directly governs caller-ID privacy on the specific call, so its correct signaling is what prevents a blocked number from being displayed to the called party at the terminating end; a misconfiguration here could leak caller ID that was supposed to stay private. A caller who dialed a privacy-block prefix before their number would have their gateway send this signal rather than ccasFwdRSEndANICallingPartyRev, ensuring the called party's phone displays no caller ID.