APCO Files Petition for Clarification of FCC's Z-Axis Rules
APCO filed a petition for clarification Friday in response to FCC rules requiring national wireless carriers to meet a vertical location accuracy metric of plus or minus 3 meters for 80 percent of indoor wireless E-911 calls for z-axis capable…
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handsets. The rules are to take effect March 16 (see 2001150011). The filing was expected to have been posted after our deadline. APCO wants to “clarify the rules … so that wireless carriers provide the 9-1-1 location expected.” Emergency communications centers “will be in the best position to know if carriers are providing z-axis information that complies with the metric, but clarification is needed so that, in the event of non-compliance, ECCs can raise appropriate concerns," APCO said. The group asked “which phones should consumers expect to provide vertical location information with 9-1-1 calls? How do carriers ensure that they have deployed z-axis technology in a manner that will achieve the accuracy demonstrated in the test bed? What additional z-axis technology testing is required, given that testing described in CTIA’s Stage Z Test Report was not sufficient to demonstrate compliance with the z-axis metric? When must carriers provide floor level information in addition to the altitude of a 9-1-1 caller?”