Abstract: A jack security device, especially suitable for standard telephone jacks mounted at a panel of an access cabinet, can either prevent unauthorized access to a secured empty jack or prevent removal of a plug from a jack in use. An end portion of the device partially covers the plug receiving jack opening. The main body of the device carries a key-actuated tumbler and slides into an access cabinet housing recess adjacent to the jack. A locking tab carried by an inner end of the tumbler engages a surface provided in the housing to place the device in a locked condition with the flanged end portion partially covering the secure jack. Additionally, arrangements within the access cabinet are provided for overriding a locked condition of the device without the need for a lock actuating key.

Abstract: A jack security device, especially suitable for standard telephone jacks mounted at a panel of an access cabinet, can either prevent unauthorized access to a secured empty jack or prevent removal of a plug from a jack in use. An end portion of the device partially covers the plug receiving jack opening. The main body of the device carries a key-actuated tumbler and slides into an access cabinet housing recess adjacent to the jack. A locking tab carried by an inner end of the tumbler engages a surface provided in the housing to place the device in a locked condition with the flanged end portion partially covering the secure jack. Additionally, arrangements within the access cabinet are provided for overriding a locked condition of the device without the need for a lock actuating key.

Abstract: The present invention is an identification tag for cooperating with a modular jack. The tag includes a body portion for allowing indicia to be placed thereon and a tab portion connected to the body portion. The tag further includes means for allowing pivotal movement between the tab portion and the body portion relative to each other for inserting and removably locking the tag into a cavity of the modular jack.

Abstract: The entrance terminal and network interface connects between the building entrance cable on the telephone facility side and the telephone customer's equipment. A modular, space saving arrangement of single line and multi-line network interfaces provides flexible and readily adaptible system for connecting selected incoming lines to either one or several multiple line users and single line users. By this arrangement, a convenient disconnect point between telephone facilities and all customers is provided. The arrangement greatly reduces costs, saves space and simplifies installation and trouble-shooting.