allophone alveolar amplitude apico-alveolar apico-dental articulation aspiration assimilation auditory effect auditory phenomenon bilabial buzz cacuminal call call box call up cerebral check coin telephone consonant continuant dental desk telephone dial dial telephone diphthong dissimilation earphone epenthetic vowel explosive extension give a ring glide glottal glottalization guttural hang up headphone hold the phone hydrophone idiophone labial labialization labiodental labiovelar laryngeal lateral lingual liquid listen in loudness make a call manner of articulation microphone modification monophthong morphophoneme mouthpiece mute nasal noise occlusive optophone palatal parasitic vowel pay station peak pharyngeal pharyngealization phoneme plosive prothetic vowel public telephone push-button telephone radiophone radiotelephone receiver retroflex ring ring off ring up segmental phoneme semivowel sonance sonant sonority sound sound intensity level sound propagation sound wave speech sound stop surd syllabic nucleus syllabic peak syllable telephone telephone booth telephone engineering telephone extension telephone mechanics telephone receiver telephonics telephony transition sound transmitter triphthong ultrasound velar vocable vocalic vocoid voice voiced sound voiceless sound voicing vowel wall telephone