Comments filed on behalf of AISP.4-HAC responding to the FCC’s Further Notice of Proposed Rulemaking in WT Docket No 07-250 and supporting both an extension of HAC rules beyond CMRS and an expansion of the de minimis rule 1900 MHz power down exception to all manufacturers and service providers and not supporting imposing any HAC compliance obligations on manufacturers and service providers when voice functionality is added to a handset by a consumer or third party after original purchase