This method doesn't do anything in Symbian 7.0s, it's just kept for binary compatibility with previous releases.
Anybody knows what's the replacement for it in Symbian 7.0s? I'm particularily interested in playing audio files during a phone call.
This was achieved in Symbian 6.0 by using ETelephonyMixed parameter.
It's listed indeed in "known issues" doc for Nokia Platform 2 for Symbian 7.0s as not working.
But it is working for Symbian 6.0, e.g. on Nokia 9200 Communicator series.
I was wondering if there's any other API which provides this in Symbian 7.0s.