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

[Kevin P. Fleming]

Damon Estep wrote:

> Is it safe to assume that having all of the prompts in a format that
> does not need to be transcoded will result in less cpu time with the
> same call load?

Absolutely.

> Would it also make sense to do the same for MOH and move away from mp3?
> MOH with native files seems to be a little more limited than mp3. Can
> you have different classes of MOH files with native formats?

Yes, you can have as many as you like. Using native format MOH will use 
more memory resources (more file handles and stream structures) but less 
CPU time, so you can decide on what makes sense for you. Also, calls 
that go on and off hold multiple times will resume the music at the same 
point, rather than just joining the existing stream.