I am using a nurse call system from past few years. Its working fine but I read in a blog that with advancement in technology there has been changes happening at a rapid pace. I am a novice in the technical know-how of such systems. I also read about wireless nurse calls (http://www.fire-monitoring.com/other-services/nurse-call/). Are they better compared to wired ones ? Are their any standards to be checked for? Can I seek help from experts to get it upgraded rather than replace it altogether.