We have spark clients on our company cell phones that ring when our desk phones ring and we are out of the office. When we setup remote destination time schedules in the CUCM ( to only ring the cell phone at certain hours ) this does not work. The spark client on our cell phones rings every time our desk phones rings no matter what day or time, even with schedules set. The only way we have found to stop our cell from ringing is to CFW all = to voice mail...on the desk phone. There has to be a way to simply tell the system not to ring the spark client. Even if it is a manual entry somewhere. The spark client on the phone does not have to be running for it to ring. It rings anytime.