Abstract: A device for detecting misconnections and/or measuring the misconnection time in telecommunication networks, specifically in MS-SPRING fiber optic telecommunication networks. The device includes pattern generator/checker transmitter blocks for generating sequence of test words designed to be connected with inlets of the telecommunication network and capable of inserting at the inlets, test words which are characteristics of the inlet where they are introduced, as well as detecting blocks designed to be connected with outlets of the telecommunication network and capable of recognizing the incoming test words and the inlet, which they come from.

Abstract: A device for testing the operation of communication networks, specifically MS-SPRING optical fiber communication networks, which includes a traffic protection function. Modulation and measurement elements (A, BK, CHKR, CHKT) are provided, which elements can be driven by a processor (PC) to execute automatic test of the operation of the traffic protection function (12) for one or more rings; (1, 11) of the optical fiber communication network.

Abstract: Improved interface system for synchronous hierarchy telecommunication networks, in particular SDH networks, comprising a high frequency backpanel function, said system comprising at least a central board and one or more input/output peripheral board apt to exchange data frames and control bytes. According to the invention, the data frames contain control bytes and said data frames are bitwise converted before being exchanged between the peripheral boards and the central board.

Abstract: An event simulator for telecommunication networks and a method for simulating the operation of such a network, in particular an MS-SPRING-type optical fiber telecommunication networks. The event simulator according to the present invention comprises a set of network elements, whose operation has to be tested, and event simulation means. According to the invention, said event simulation means comprise electronic processing means suitable to generate simulation signals for a virtual telecommunication network ring and interfacing means able to transmit/receive said simulation signals with the set of network elements whose operation has to be tested.