This information is relayed using the Network layer to provide {HEAD ~ feedback} to {TAIL ~ the MAC layer} in order to improve the end to end performance of VoIP services 
to
This information is relayed using the Network layer to provide { HEAD ~ feedback } to { TAIL ~ the MAC layer } in order to improve the end to end performance of VoIP services
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH