The heart of a residential multi-line, multi-extension telephone system is the telecommunications controller. Working like a 24 hour operator, this sophisticated controller directs both outside calls and calls made inside the house to their proper destinations. From any phone in the house, you can page family members, transfer incoming calls to other phones, conduct intercom calls between phone extensions, direct calls to specific voice mailboxes and even unlock the front gate or front door. From the comfort of your favorite chair you can check the outdoor temperature, arm or disarm the security system, or adjust the lights and temperature – all from your home telephone. Out of town or on the way home from work? Simply call your system on the phone to check on the status of your house or adjust the lighting and temperature for your arrival.