of+long+duration
131Methadone — Phy redirects here. For the abbreviation for the physical layer of the OSI Model, see PHY. Not to be confused with Methedrine, Methedrone, Mephedrone, or Methylone. Methadone …
132Special information tones — In telephony, a special information tone (SIT) is an international standard three beep signal indicating a call did not go through and usually precedes a recorded announcement explaining the problem.[1] As the SIT is well known in many countries …
