ShoreTel: Make Number Private (CLIR) is broken in Germany / Europe Tags Mitel Make Number Private Broken CLIR Rufnummernunterdrückung The feature Make Number Private better known as CLIR in ShoreTel PBX is not working out of the box in Germany / Europe on ISDN and PRI lines. You can solve this by altering the Trunk Group Dialing Rules of your ShoreTel system. Read more about ShoreTel: Make Number Private (CLIR) is broken in Germany / Europe