A fiber distribution hub includes {HEAD ~ a swing frame chassis} pivotally mounted within {TAIL ~ an enclosure} 
pivotally mounted within
A fiber distribution hub includes { HEAD ~ a swing frame chassis } pivotally mounted within { TAIL ~ an enclosure }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL