sˈɔftwɛɹˈoʊnli sˈɪstəmz: ðiːz sˈɪstəmz mˈeɪ biː ˈɔːlsˈɔftwɛɹ ɹˈʌnɪŋ ˌɔn ˈɪndʌstɹistˈændɚd sˈɜːvɚz, ɔːɹ jˈuːs hˈɑːɹdwɛɹ sˈʌtʃ ɐz ɐ sˈaʊnd kˈɑːɹd ˌɔn ɐ pˌiːsˈiː, tə dˈuː ðə wˈɜːk ʌv ɹᵻkˈoːɹdɪŋ ænd mˈɑːnɪɾɚɹɪŋ tˈɛlᵻfˌoʊn kˈɔːlz.
Software-only systems: These systems may be all-software running on industry-standard servers, or use hardware such as a sound card on a PC, to do the work of recording and monitoring telephone calls.