Possible to change the Asterisk-IM?

Is it possible to implement the following plug-in Asterisk-IM?

Write the message to the user with a “+” character - which makes no sense, but also serves as a flag that we want to call him, wait until the initiation of a call from Asterisk picks up the receiver on our phone, waiting for a response from us the necessary staff and enjoy socializing. So it will work for all clients jabber.