Imibhalo yomthombo weprojekthi ye-D-Modem ishicilelwe, esebenzisa imodem yesofthiwe yokuququzelela ukuhanjiswa kwedatha kwiinethiwekhi zeVoIP ngokusekelwe kwiprotocol ye-SIP. I-D-Modem yenza kube nokwenzeka ukwenza umjelo wonxibelelwano ngeVoIP, ngokufanayo nendlela iimodem zocofa zemveli ezivumela ukuba idatha idluliselwe kuthungelwano lomnxeba. Imimandla yesicelo seprojekthi iquka ukudibanisa kwiinethiwekhi zodawuli esele zikhona ngaphandle kokusebenzisa inethiwekhi yomnxeba kwelinye icala, ukuququzelela amajelo onxibelelwano afihlakeleyo, kunye nokuqhuba uvavanyo lokhuseleko lweenkqubo ezifumaneka kuphela ngokucofa. Ikhowudi yeprojekthi ibhalwe ngolwimi C kwaye isasazwe phantsi kwelayisensi ye-GPLv2.