asterisk users - Mar 2004 - On which channels manager redirect work?

On which channel types manager redirect work? I try it on IAX chanel and 
it fails with message "Redirect failed". Which channel syntax should
by
used for redirect command? There seems to be e.g.: 
IAX[polimorfia@192.168.0.2:5036]/27 for channel "instance" and e.g.: 
IAX/kamyk@192.168.0.3 for channel "type". Both fail in redirect.

Maciej Kaminski