Samsung SPH-A680 / VM-A680

I am debating replacing my sanyo 8100 for this phone but there is a feature my sanyo has that my previous samsungs didn't and want to know if anyone knows if this feature was added with this phone. the feature essentially changes the ringer to an actual ring when it is put on the charger, this way if you always leave the phone on vibrate you won't have to miss calls while the phone is charging. would appreciate anyone that has this phone to check this out for me. thanks