asterisk users - Jul 2010 - Musiconhold Problem

Hi,
we are facing the problem , that we cannot distinguish between a trunk 
an an extension.
On our trunk side, if the remote user puts us on hold the same 
Musiconhold is played as if we would call another extension on the sam 
Asterisk PBX.

Asterisk should play the music from the remote End not "its own"

see also https://issues.asterisk.org/view.php?id=16901

I Guess the Problem applies mainly to Germany because it's an ISDN Message.


are there any solutions??


cheer Markus