Wrong... Or misleading at best. What they want is a line that is used for At Home calls and nothing else. They were not referring to old analog modems that used dial up internet.
You are half right. You'll need a line for At Home calls only as well as a regular POTS (Plain Old Telephone Service) line. It cannot be VOIP. You're not going to be making calls from it just receiving calls from the iLog system.