The below listed companies have been 3P certified as suppliers of high quality permanent links and channels. The table below gives a survey of all suppliers having a valid certification together with performance ratings of such certifications. Details of the granted certifications, including full identification of tested configuration, and manufacture and type of applied cable(s) and connecting hardware, can be found for each permanent link or channel in question. Furthermore, links to all issued and valid Attestations of Conformity are made available.