known issue: Grandstream phones via tunnel

[andymars]

No ringback tone on Grandstream phones when using tunnel...

I saw that an issue I have been eagerly waiting to be fixed, appeared on the known issues list for beta 1 and then disappeared from beta 2. Please can you explain if this is still being looked at?

The original discussion can be found here: http://www.3cx.com/forums/no-ringback-tone-dialling-external-numbers-13513.html

Thanks,
Andrew