November 2008 802.15.7 PAR Comments Received from 802.11 RF stands for Radio Frequencies, as an acronym, you should spell it out on first usage in 5.5 purpose. Agree- spelled out on first use in Sections 5.4 and 5.5. Why call out RF interference when you state that the band in use is outside the RF band? Visible light is free of non-visible interference, but that should not be used in the definition of the scope and purpose. The Scope and Purpose should deal specifically with the stated spectrum and not counter examples. It is first mentioned in the Purpose and Need and not in the scope. We have taken a conservative approach to ensure better understanding of where this fits in the grand scheme of things. It also makes it obvious that this provides an inherently non interfering communications scheme. All the semicolons in the scope statement should be commas. Agree, replaced by commas Have you considered the Mirror in the Middle attack?  We adopted the same approach that 802.11 used to deal with the microwave oven in the middle attack  EunTae Won, Samsung

November 2008 802.15.7 PAR Comments Received from "Ronald Petersen" <ron.petersen@verizon.net> Please explain "health" in the following phrase in the Scope:  "...impairments due to noise and interference from, e.g., ambient light; health and other environmental effects:... Response: This was an artifact that did not belong there. It has been removed. EunTae Won, Samsung

November 2008 802.15.7 PAR Comments Received from 802.3 The PAR scope is deficient in that it does not address the medium.  This should not be addressed only in the PAR Purpose. The phrase “optically transparent media” has been added to the PAR scope Section 5.2 Please include within the project documents a commitment to include a PICS proforma in the initial version of the standard. Agree, commitment is included in Section 8.1 of the PAR EunTae Won, Samsung