Yep, as James mentioned both programs should do the trick. I was just now poking around at the options in NetView&Modem on my T-1. And if it's not set by default, I believe you can have it synchronize file creation to the epoch at the beginning/end of the nearest hour, so that it's not logging from, say 3:21 PM to 4:21 PM, but rather 3:00PM-4:00PM, etc.
My perma-base is a Topcon NET-G3A. So obviously I can't use NetView to enable the feature (or maybe I can... GREIS is just GRILL on steroids!), but I believe the functionality is essentially identical. I have used AFRM with my T-1, though rarely encounter the need to do so, hence my head-scratching about some of the details.