On-premises wiring
（重定向自Inside wiring）
On-premises wiring (customer premises wiring) is customer-owned telecommunication transmission or distribution lines. The transmission lines may be metallic (copper) or optical fiber, and may be installed within or between buildings.
Premises wiring may consist of horizontal wiring, vertical wiring, and backbone cabling. It may extend from the point-of-entry to user work areas. Any type of communications or data wiring is considered premises wiring, including telephone, computer/data, intercom, closed-circuit television.