[Asterisk-Users] wav instead of gsm for vm-sounds?

[Damon Estep]

> Every attempt to play a file in Asterisk (that doesn't specify the
> extension) will use the 'best' format it can find for the call's
format.
> The applications that ship with Asterisk do not specify any particular
> format, so your best bet is to provide the files in all the formats
you
> expect your callers to be using, so Asterisk never has to transcode a
> file playback. The same thing is true for voicemail recording; you
> should record in every format your users might call in with, unless
the
> extra disk space consumption would be an issue.

Thanks Kevin,

Is there a reference of codec to preferred format somewhere? What is the
best format match for g.711u?