Bridge configuration in Asterisk 13

I’ve recently upgraded from Asterisk 11 to Asterisk 13.

Most of it went smoothly thanks to the documentation detailing how to upgrade to 12 and then how to upgrade to 13.

The only thing that didn’t work correctly was Music On Hold. Eventually I tracked this down to using bridge_softmix instead of bridge_simple.

What I’m asking is, does anyone have any explanation as to why MOH would not work with bridge_softmix? Asterisk 11 had been working for at least a year with bridge_softmix and the MOH was fine. With the same configuration (almost) Asterisk 13 insists I use bridge_simple otherwise I see no messages on the CLI about hold music starting or stopping. Unloading bridge_softmix and then loading bridge_simple fixes the issue.

Also does anyone have any documentation on what bridges I should be using? I can’t seem to find anything in the upgrade documentation that says “MOH will no longer work in softmix, you should use simple”. This has me concerned that I’ve done something wrong elsewhere in my config that is causing softmix to not work correctly.


I hate redirecting your query to another location. But, for the time being, you’re going to get a better answer to your question from the posters on the mailing lists.

Try the asterisk-users list at:

Thanks Malcolm. I’ll try there.