Communication set-up is the sensory system of an association. There are different communication equipment that a security guard can used to communicate while releasing his/her duties at the premises. Communication equipment that are basically used in the PSS (Private Security System) are as under :- Telephone : Telephone/Mobile is a communication device for transmitting speech over a long distance. Calls are best for very timely messages, short and urgent messages and direct communications with staff people you know. Calls are additionally an great method to set up a formal meeting or site visit. Intercom or Door Phone : A intercom is internal, independent communication system for offices, buildings, residential societies and premises, in which outside calls can also be connected. Intercom has component like expert station which work as a exchange handset and headset etc. for tow way communication. A entryway telephone is a system that enables you to receive "calls" from yo...