I am looking for the commands to enable the back light on Cisco 7975 phone 7 days a week from 7:30 am to 10:00pm. I am able to get it to work 6 days a week except Sunday with telephony-service command phone service daysBacklightNotActive 1 but if I enter nothing or phone service daysBacklightNotActive 0 for example the phone just defaults to back light off on weekends.
