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