| Voicemails sometimes have problems like this because, when a message is left it tries to turn on the lamp. But if the phone is in use it can't so it tries three times at intervals before giving up and assuming the lamp is on. Later it may run a refresh routine to check all the lamps and suddenly up pops the missing or late lamp.
At least that's my explanation and I'm sticking with it. Got many a customer off my back that has! |