ILEC Network Diagram

This diagram shows a customer with voice and broadband supplied by the Incumbent Local Exchange Carrier (ILEC). As the Incumbent owns all the equipment, including the copper out to the customer, it will be responsible for any fault identified in the circuit. It still needs to access the circuit to test the line and this is normally performed by plugging into the circuit on the Main Distribution Frame (MDF). This does require a person to be at the exchange to perform this function, a majority of exchange are now 'lights out' so the action requires an expensive truck roll.

Test Access allows remote testing of a circuit without additional staff in the Central Office / Exchange building.

Mouse over to see circuit path.

DSL Test Heads