History Of Intercom Systems
An intercom system is also known as an Intercommunication Device. It is used to communicate with people in small buildings or a small collection of buildings. It is permanently mounted to buildings and vehicles. An intercom can be connected to public address loudspeaker systems, walkie talkies, telephones and even to other intercom systems. Some intercoms incorporate control of devices and door latches. You will find that some models are equipped with a video feature and are compatible with computers
How it all started.
In the 19th century, businesses made use of speaking tubes to convey messages to different departments. By the late 1800’s this technology moved to buzzers placed in each office. Employers used these to summon people to their office.
Telephone based intercoms emerged in the late 1890’s. Back in 1894, Kellogg patented the first Intercommunicating Telephone System.
By 1912, users could choose between telephone- style intercoms and a hands-free desktop loudspeaker.
By the time the 1950’s arrived an intercom replaced a doorman and was used to buzz visitors through an electronically controlled door.
There are two types of intercom systems available and they are:
They are mainly composed of analogue systems but in recent years have moved over to digital connections. Digital connections carry voice and video signals.
These types of systems are mainly used by special events production crews, theatres, concert halls, sports teams and even at motor racing events. It is especially convenient at places where a lot of movement is required.
The two types can be further divided into categories and they are:
Wiring intercoms can be divided into; 2– wired intercoms and 4-wired intercoms.
As its names suggests, it functions without wires. These intercoms are easier to move around.
Video Intercoms are increasing in popularity. It is ideal, because you have the ability to see and speak to the visitor at the same time. Some video door phones have the ability to store snapshots of the person in the memory of the device.
The present and the future:
The intercom is no longer being used as just a two-way messaging system. Its functions have been improved to include but not limited to;
- Door entry system – A push of a button allows the electronically operated door to open.
- Provides security – By requesting a visitor to identify themselves before entering, you have some assurance of safety.
Baby monitoring – Keeping tabs on your baby is easier with an intercom.