Abstract: A connector panel for plug-in units in a telecommunication system, the telecommunication system including a sub-rack or shelf having a backplane for power supply of a number of N plug-in units within the shelf and for enabling the N plug-in units within the shelf to communicate with each other; wherein the connector panel is an entity separate from the backplane and includes a number of m connectors providing an interface between n dedicated plug-in units among the N plug-in units within the shelf, with 2?n<N and m?n; and wherein the connector panel is configured to be removably attached at an interior wall of the shelf.

Abstract: A connector panel for plug-in units in a telecommunication system, the telecommunication system including a sub-rack or shelf having a backplane for power supply of a number of N plug-in units within the shelf and for enabling the N plug-in units within the shelf to communicate with each other; wherein the connector panel is an entity separate from the backplane and includes a number of m connectors providing an interface between n dedicated plug-in units among the N plug-in units within the shelf, with 2?n<N and m?n; and wherein the connector panel is configured to be removably attached at an interior wall of the shelf.

Abstract: Retarding a fire condition of a telecommunications component mounted on a module to be inserted into a telecommunications box is provided. The module may have a planar surface having a first side and a second side generally opposed to the first side. A ventilator provides a cross air flow generally in a direction from the first side to the second side. A first opening in the telecommunications box in an area adjacent of the first side of the planar surface forms a substantial portion of the cross air flow emanating from the first side. A second opening in the telecommunications box arranged in an area adjacent to the second side of the planar surface exhausts the cross flow air, such that the cross flow air sub-stantially retards the fire condition. An air flow guide is provided to simulate an air resistance of a module.

Abstract: The subrack has a slot for the terminal strip (4) embodied as a self-supporting, autonomous modular unit. By means of the mirror-image arrangement of the fixing points in the subrack, the terminal strip (4) can be selectively assembled in such a way that external lines coming from the front or back side of the subrack can be connected to connecting components (5) of the terminal strip (4).