On my 2400 ICS, here is what I'm trying to do. A caller in a call-center calls somebody. He gets an answering machine and is asked to leave a message.

Somehow, the caller now should be able to push a button on his phone, which will play a pre-recorded message onto the called party's answering machine. At the same time - ideally - the caller can hang up his phone to start calling the next person.

Any ideas?

I have an Interalia device that I'm using to play pre-recorded messages when people set up wake-up calls and receive wake-up calls.