ðə mˈeɪn ɹˈiːzən wˌaɪ ɐ kˈɔːɹpəs ʌv tˈɛlᵻfˌoʊn spˈiːtʃ wʌz kɹiːˈeɪɾᵻd wʌz tə tɹˈeɪn spˈiːtʃ ɹˌɛkəɡnˈɪʃən sˈɔftwɛɹ.
The main reason why a corpus of telephone speech was created was to train speech recognition software.