ocr: *0:2-3seconds *0.5-1.5.geconds * Vanable: 2200ms >*1.6-3seconds Silent interval setween: Power Rings Continuous Powor: Continuous Poyver: Ring or Distinclive Data transmission) Ring. Ring or Pattem sistinerve Ring Pattemn Figure 2: Timing spectfications for data transmission with pouer rnging