I have a cluster running CUCM 18.104.22.16800-5. PSTN is 10 digits. AAR works 100% to all extensions, except the first DID number, which is a AA CTI route point. When I call it the phone says rerouting, but it does not even attempt to go out my gateway. I only get an engaged tone. On the CTI Route Point I do not see AAR Calling Search Space or AAR Group. On the line I see only under the AAR settings the AAR Group setting, which I did select. I also did check all my CTI Ports, and they have all the correct AAR settings.