Abstract: An apparatus for verifying port and slot assignments of cable bundles that extend from a telephony filtering device, including Digital Subscriber Line (DSL) infrastructure. The apparatus may have a circuit board that inserts into a vacant slot of a frame of DSL equipment. The circuit board (sometimes called a LC circuit board) provides a connector that provides electrical continuity from a voltage driven indicator to, e.g. a slot-to-slot interface. One lead to the indicator may be held to a high voltage by a voltage source. A remaining lead, or probe input, may be connected to a common ground to cause the indicator to illuminate. Frequently, the common ground circuit closure may occur at a Main Distribution Frame (MDF). Such a circuit board may be installed in a data only shelf, i.e. wherein Line Cards (LC) that ordinarily populate the shelf support data traffic that arrives via the slot-to-slot interface.

Abstract: An apparatus for verifying port and slot assignments of cable bundles that extend from a telephony filtering device, including Digital Subscriber Line (DSL) infrastructure is disclosed. The apparatus may have a circuit board that inserts into a vacant slot of a frame of DSL equipment. The circuit board (sometimes called a LC circuit board) provides a connector that provides electrical continuity from a voltage driven indicator to, e.g. a slot-to-slot interface. One lead to the indicator may be held to a high voltage by a voltage source. A remaining lead, or probe input, may be connected to a common ground to cause the indicator to illuminate. Frequently, the common ground circuit closure may occur at a Main Distribution Frame (MDF). Such a circuit board may be installed in a data only shelf, i.e. wherein Line Cards (LC) that ordinarily populate the shelf support data traffic that arrives via the slot-to-slot interface.