I have a Russound CAV6.6 whole house audio system which supports 12 volt interrupt input which will mute any existing audio source and play some sound over all speakers (for example, tehy have a doorbell module which mutes everything, regardless of which source you have on, and plays the doorbell sound).
What I am looking for is a way to have caller id numbers or names spoken over the house speakers and have it done with the 12 volt interrupt (so that I can have any source on and the caller ID will still come on).
I looked for a pre-made module to do this and don't see anything. I have caller id software on a server that supports text-to-speech (which is also a source for the Russound system) but don't know how to make this go through the 12v interrupt (if I make the caller id a source on the Russound system, I would have to have that source chosen to hear it).
Thanks for any suggestions