Techniques for finding the source of perceptual audio degradation in an IP telephony environment provide a hop-by-hop analysis of a network over which IP telephony is laid, and may be performed by network switching devices, such as routers, gateways and switches. ; and depositing an iridium containing film formed from the reaction of the at least one iridium containing precursor onto the at least one substrate. This set of associations is used to generate documents that include part numbers that the recipient of the document is familiar with. The system further comprises a lighting unit sensor configured to sense light of the plurality of lighting units and configured to detect the unique unit identifiers of the plurality of lighting units and a video device configured to generate an optical image. The three cable support members are spaced to constrain a cable disposed over the surface of the two outer members and under the inner member. In addition, it is found by PCR test that the gene of this antifungal protein exists in other Monascus species such as M.