Telephone wiring on the customer's side of the rate demarcation point, the point located on the subscriber's side of the telephone company's protector or other device serving the same purpose. For residences, the protector is usually located at the point where the telephone lines enter the house.
In telephone deregulation, the customer's premises wiring; the wiring inside of a building.
Wiring within a customer's premise that is used for internal communications or to connect CPE to the network interface.
All phone service wiring between the Point of Demarcation up to and including all terminal devices in your home. Telco refers to this as the IW and considers it subscriber owned, meaning if there is ever a problem that degrades or eliminates your phone service from within the IW its up to you to fix.
That portion of the telephone wire and jacks inside a residence or business for which the customer is responsible for repairs and maintenance.
Telephone wire on the customer side of the Telephone Network Interface, including jacks.
Wiring that is done from the point of demarcation to the jack in the wall where the line terminates.
Wiring work that, in order for you to have an ISDN line, may need to be done on your side of the demarc. Typically, you have the option of doing it yourself or having the phone company do it for an extra charge.
Cabling infrastructure on any given site. Even though ISDN is designed to work over regular telephone wiring, very old cable will have to be upgraded. Typically, you have the option of doing it yourself, or you can have the phone company or a wiring vendor do it for a charge.
The wiring on the customer side of the FCC-defined network interface point in the United States.