Missing application for JabberSend

Hi all,

I am using Ubuntu and successfully installed iksemel, libgnutls-dev, asterisk 1.4, asteriskGUI and my system is running ok.

But when i test my Gtalk function, e.g.

exten=my_dummy_ext,1,JabberSend(asterisk,my@gmail.com,This is a test Message)

The CLI displays "No application ‘JabberSend’ for extension … .

So could anyone advise me that i am missing something here?

Thanks in advance!