I have to put all the fax machines (analog lines) into Call Manager

I have several Cisco VG202XMs with FXS modules.

I have some route and switch experience but not much. I've found a couple of sample configs out there, along with of course the requisite Cisco white papers for the VG202.

All these things need to be able to do is to facilitate faxing in and out.

Anyone have any juicy tips to share? Looks like we're using H323 in Call Manager and I should set it up that way if possible.

Honestly, I'll probably end up using a consultant for this in the end, but, thought I'd see if anyone had anything quick to share. I'd like to learn as much as possible even if in the end I need to turn to a specialist.