I would consider installing the system but with a doorbell button for a "push to talk" function. If the customer chose to bypass the button I don't think I would be held liable. In a similar fashion, I have installed M-O-H jacks for Info-On-Hold devices but have seen the customer plug in a music player instead. If the customer modifies or uses the device in a manner different than what I set it up for, could I still be liable?

- Dave S. -

You can never appease your ideologue opponents.