http://slideplayer.com/1592820/5/images/7/When+the+signal+reaches+the+receiving+computer+it+is+converted+back+from+analogue+to+digital+form.+A+process+called+DEMODULATION.+Modems+are+usually+used+to+connect+a+computer+to+the+Internet+and+to+send+and+receive+faxes+via+the+computer.+Modems+constantly+check+whether+the+information+was+received+properly+or+not.+The+information+is+broken+down+and+sent+in+groups+called+PACKETS.+Each+packet+is+checked+for+errors+and+is+re-sent+if+there+is+an+error.+Click+on+the+link+below+to+see+how+the+modem+works..jpg