Did you ever want to yell at someone you see on your video surveillance display? Maybe you want to tell them to get away from your parking lot or to yell at an intruder that the police are coming. Perhaps you would like to talk to someone at your door? Then you could let the delivery man enter the back door at your office.
IP audio interface systems provide connections to speakers for paging or intercom devices. This article describes how audio can be added to your network or IP camera system.