[Asterisk-Users] Re-routing of existing calls

[Alistair Cunningham]

Does Asterisk have the capability to re-route calls that have already been
connected?

By this, I mean:

1. A call comes in to Asterisk.
2. It is routed to an extension as normal.
3. This extension answers, and the conversation starts.
4. After a few minutes, a plugin that I am writing decides that it wants to
   transfer the call to somewhere else.
5. It signals this to the core of Asterisk (this is the part I am unsure how
   to do, if it can be done at all).
6. Asterisk hangs up on the extension.
7. (optional) Asterisk plays a 'please hold' message to the caller.
8. The call is routed to the new extension.

Is this possible? Can anyone point me to documentation on how to do step 5?

-- 
Alistair Cunningham,
Email: ac at gnu.org