Add a new AGI command to execute by the Async AGI application.
It will append the application to the specified channel's queue. If the channel is not inside Async AGI application it will return an error.
It is implemented in res/res_agi.c
Available since Asterisk 1.6
@see org.asteriskjava.manager.event.AsyncAgiEvent
@author srt
@version $Id$
@since 1.0.0