Recommend a good home automation firm in Northen NJ

I have a client that is in need of someone with home automation experience to repair (complete installation?) an internet distribution system in their home which most rooms are ethernet hardwired. As it stands now it is hard for me to tell if the system was ever functional or even completely installed. Incorporated in this system is a doorbell/intercom setup that is connected to the telephones of the house. This is also not operational. I am home theater only and was brought in through recommendation, came in and was no help. Can someone recommend a proper home automation firm near Northen NJ for this person? Thank you

Does anyone have any experience with Cinemagic in Pompton Plains NJ, or an effective way to get testimonials for an automation company? Thank you

Thanks everybody