The telephone utility cable at a residential service location terminates at a network interface device (NID) which serves as the demarcation point between the carrier's network and the customer's wiring.
At a residential service location, the telephone utility cable normally terminates at a network interface device (NID).
Network interface devices are used by telecommunications companies to provide access to their network for connecting telephone lines. They serve as the demarcation point between the carrier's network and the customer's wiring.
Network interface devices are typically found on the exterior of a building and allow for easy access by technicians when troubleshooting or installing services.
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