If you have buzzed in to an apartment block or group dwelling you would have used an intercom and access control system. Normally they are an analogue system that is found on a multi residential building. For construction companies,.
SIP Vs IP Intercoms whats the real difference ?
The benefits offered by IP intercom systems, compared to traditional analog systems are now universally recognized - The most important being the reduction of costs and installation time that you can get by being able to share the existing.