Sound quality is crackly with SIP when using FreePBX


We are using FreePBX and we notice that the sound quality is poor where it sounds crackly.



  1. You are likely using older sound codecs that are not G711 (aka ulaw), G722 or G729.
  2. To verify, go to Tools then Asterisk SIP Settings.
  3. If you don't have any of the three enabled, then enable them, then disable the others.
  4. Submit then Apply all Changes.


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