Chepang and Bhujel are two very closely related languages situated in south-central Nepal. They belong to the very large family of languages (Sino-Tibetan) that includes Chinese, Tibetan and many languages south of the Himalayas. These two are usually classified as belonging to the Tibeto-Burman branch of Sino-Tibetan, along with many other indigenous Nepalese languages. Both the Chepang and the Bhujel languages have certain pairs of words that are distinguished in meaning and in sound by suprasegmental features – features such as pitch and voice quality. The latter are termed ‘glottalic ‘glottalic’ as they originate at the glottis (or voice-box) This paper examines these features, with the help of instrumental read-outs, and seeks to identify which of these features are the most significant and relevant to each language, to enable a transcription of these sounds. As well as this discussion there is a consideration of possible origins of the features and whether they might be, or become tonal languages, where pitch is the relevant distinguishing feature. Also mentioned is a whistled form of speech of a more unusual type, and its relation to these features.