The quantity and nature of actual message transmissions involved in the primary communications test varies in accordance with {HEAD ~ embodiments} of {TAIL ~ the invention} 
of
The quantity and nature of actual message transmissions involved in the primary communications test varies in accordance with { HEAD ~ embodiments } of { TAIL ~ the invention }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL