[asterisk-users] MOH distorted voice in Native and MP3 format

[Kevin Withnall]

Something you may want to try (its fixed it for us) is putting an I
(uppercase I) on the asterisk invocation line.

We run servers in the cloud and can't get reliable timing from ISDN
cards etc so this instructs asterisk to generate its own internal
timing. If you have ISDN you probably don't want to do this as they
"should" provide better timing.

Its probably worth a try anyway.

eg.
asterisk -vvvg
change to
asterisk -vvvgI