Recently just upgrade to CUCM 7.1. I facing user can't create meet me conference. Ad hoc conference no problem. When first user press meet me button from phone and dial meet me number, phone show connected. When second user press meet me and dial meet me number can't get through and join the meeting. User feed back after press meet me button and dial meet me number only listen "du" sound.
Can someone guide me troubleshoot this problem.