{HEAD ~ The modem} provides {TAIL ~ a calibration signal} for calibrating a modulation characteristic of the supply modulator, to the supply modulator 
provides
{ HEAD ~ The modem } provides { TAIL ~ a calibration signal } for calibrating a modulation characteristic of the supply modulator , to the supply modulator
HEAD 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 OTH OTH