I found out something new today!
Both these phone recording units will record all land line calls regardless of which room the unit is located in. Meaning you could plug the unit into the phone jack in the kitchen and automatically record every call made (or answered) in every other room of the house.
Here are links to the items discussed:
Telephone Call Recorder
Automatically record both sides of phone calls - voice activated, stores to removable SD card
Price: $79.95 View Details
Voice & Telephone Recorder
Voice activated telephone recording - stores files on removable SD card, Supports digital & VoIP phones
Price: $49.95 View Details
