Yes — Kentucky rule 902 KAR 10:120 requires the emergency phone to be readily accessible at all times of use.
Kentucky requires the emergency telephone or device to be readily accessible at all times the pool is in use.
Citation: 902 KAR 10:120
"At all times" means the phone can't be locked away or powered down outside of staffed hours if the pool itself remains open — an important detail for unstaffed community and apartment pools.
SouthEast Telephone installs and monitors cellular emergency pool phones nationwide and can help you meet Kentucky's requirements.