- Its phonation is voiced, which means the vocal cords vibrate during the articulation.
- It is an oral consonant, which means air is allowed to escape through the mouth only.
- It is a central consonant, which means it is produced by directing the airstream along the center of the tongue, rather than to the sides.
- The airstream mechanism is implosive (glottalic ingressive), which means it is produced by pulling air in by pumping the glottis downward. Since it is voiced, the glottis is not completely closed, but allows a pulmonic airstream to escape through it.
- Connell, Bruce; Ahoua, Firmin; Gibbon, Dafydd (2002), "Ega", Journal of the International Phonetic Association, 32 (1): 99–104, doi:10.1017/S002510030200018X
- Devonish, H; Harry, Otelamate G. (2004), "Jamaican phonology", in Kortman, B; Shneider E. W., A Handbook of Varieties of English, phonology, 1, Berlin: Mouton De Gruyter, pp. 441–471
- Keer, Edward (1999), Geminates, The OCP and The Nature of CON, Rutgers University
- Tench, Paul (2007), "Tera", Journal of the International Phonetic Association, 37 (1): 228–234, doi:10.1017/s0025100307002952