Full Answer
What is an intercom system?
An intercom system is a two-way communication electronic device that contains circuitry for the purpose of transmitting and receiving audio and/or video transmissions. With the advent of cellular communication, digital telephone systems, and other communication devices, the use of intercoms has declined.
What type of cabling is used for intercoms?
Portable intercoms are connected primarily using common shielded, twisted pair microphone cabling terminated with 3-pin XLR connectors. Building and vehicle intercoms are connected in a similar manner with shielded cabling often containing more than one twisted pair.
Where can intercom cameras be used?
Intercom cameras can be used in modern offices and hotels. Many schools and office buildings now use audio / video systems to identify visitors trying to gain access to a locked building, and can be interfaced with the building's access control system.
What is the difference between wireless and wired intercoms?
Wireless intercoms can also run over a mesh network that allows near-instant communication throughout a house. Power line communication units that send signal over house wiring have been referred to as "wireless" intercoms. Though they are technically wired intercoms, they are based on existing wiring and thus require no additional wires.
Which cable is used for intercom?
CAT3, CAT 5e, or CAT 6 cable Category 3 cable, commonly known as Cat 3 or station wire, is an unshielded twisted pair (UTP) cable designed to reliably carry data up to 10 Megabits/sec. The data speeds for Cat 5e is 100 Megabits/sec, and Cat 6 is 500 Megabits/sec.
What is the purpose of intercom?
Intercom is a Customer Communications Platform. It shows you who is using your product or website and makes it easy to personally communicate with them with targeted content, behavior-driven messages, and conversational support.
How does intercom system work?
Its a two-way communication electronic device that contains circuitry for the purpose of transmitting and receiving audio and/or video transmissions. Intercom allows a person speaking into a microphone to be heard on a speaker by people in a different room or area.
How are intercoms wired?
2-wire wired intercoms are usually half-duplex only. With only one pair of wires, they have to be used for both transmit and receive. When one party is talking, the wires are being used to transmit the voice to the other party. Then the wires are used to receive the voice from the other party, and vice-versa.
Where are intercoms used?
Besides fixed locations, intercom systems are used on many types of vehicles including trains, watercraft, aircraft and armoured fighting vehicles.
Does intercom work without Internet?
Modern multi-tenant commercial intercoms require an internet connection for features like video calling and remote management. If your intercom needs an internet connection, you have two options: A hardwired internet connection with an ethernet cable.
How do you set up an intercom connection?
0:132:20DIY Hacks & How To's: Phone Intercom - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow connect one of the wires from the phone cord to the 9-volt battery. And connect the other wireMoreNow connect one of the wires from the phone cord to the 9-volt battery. And connect the other wire to the resistor. Lastly connect the other ends of the battery. And the resistor. Together.
How do I set up an intercom?
How to Set Up an Intercom System in Your House With PhonesPlug the home phone into a power outlet and a wall outlet. Turn the phone on if the phone doesn't automatically activate. ... Place each phone in the appropriate rooms. ... Register each phone with the main phone. ... Test the intercom connection.
How do I connect to a wireless intercom?
0:221:358-way Wireless Intercom - YouTubeYouTubeStart of suggested clipEnd of suggested clipDial the extension you want to talk. To. When the second handset is picked up clear to two-wayMoreDial the extension you want to talk. To. When the second handset is picked up clear to two-way communication is achieved to end the call just place the handsets.
Are intercoms hard wired?
The most common intercom option is going to be the hard-wired unit that you can mount inside the home. These work by allowing you to communicate with someone at the front door just by pressing a button to speak and then your intercom speakers are connected by wire in the home.
What is intercom in a house?
An intercom system is one that includes an array of products that aids communication flow between people in their homes. It can either be via video communication, strictly audio (speaker and receiver), or it could be a combination of both.
What does intercom mean on my phone?
You can place and receive one-way calls using an intercom line. When you place an intercom call, the recipient's phone answers the call automatically with mute activated (whisper mode). Your message is broadcast through the recipient's speakerphone, headset, or handset, if one of these devices is active.
What is audio intercom system?
An intercom (intercommunication) system is a two-way communication device. You may have also heard of it referred to as a "talkback" or "door phone". It's an electronic device that sends and receives audio or both audio and video signals. A building with an intercom allows a person to speak into a microphone.
How do you use an intercom apartment?
How does an apartment intercom work?To enter the building, the visitor must use a directory on the intercom to look up the person they want to request property access from. ... When the visitor finds the right person in the intercom's directory, they push a 'call' button to notify them.More items...
What type of intercom is used in TV?
There are essentially two different types of intercoms used in the television world: two-wire party line or four-wire matrix systems. In the beginning, TV stations would simply build their own communication systems using old phone equipment. However, today there are several manufacturers offering off-the-shelf systems.
How does an intercom work?
While every intercom product line is different, most analogue intercom systems have much in common. Voice signals of about a volt or two are carried atop a direct current power rail of 12, 30 or 48 volts which uses a pair of conductors. Signal light indications between stations can be accomplished through the use of additional conductors or can be carried on the main voice pair via tone frequencies sent above or below the speech frequency range. Multiple channels of simultaneous conversations can be carried over additional conductors within a cable or by frequency- or time-division multiplexing in the analogue domain. Multiple channels can easily be carried by packet-switched digital intercom signals.
What is an intercom in a butler?
A butler uses an intercom on behalf of a lady. An intercom (" intercommunication device ") or interphone is a stand-alone voice communications system for use within a building or small collection of buildings, functioning independently of the public telephone network. Intercoms are generally mounted permanently in buildings and vehicles.
What is a paging signal?
Paging signal: An audible and/or visual alert at an intercom station, indicating that someone at another station wants to initiate a conversation.
How many pairs of intercoms are needed for an apartment?
Some are equipped with video, and its wiring (electrical installation), can be connected to the outside with few pairs (4-6 pairs) while controlling an electric strike. The latest generations are even compatible with computers, and some models include TCP/IP compatibility.
What is a portable intercom?
Portable systems. Portable intercoms are commonly used by special event production crews and professional sports teams. Performing arts venues such as theaters and concert halls often have a combination of permanently mounted and portable intercom elements.
What is an amplifier in an intercom system?
Amplifier: An intercom system's main or central component, responsible for switching or connecting communication paths between master and substations. In addition, amplifiers distribute or switch power to auxiliary connected devices, such as door strikes, to allow entry.
How to use intercom?
If you have a website or a web-based product, on desktop and/or mobile you can use Intercom to: 1 See who your customers are and what they do: Track, filter, and segment every customer - For free. Powered by the Intercom platform . 2 Conversational Marketing: Automatically get more leads from your website. Use bots to qualify, route and schedule meetings, and chat with your best leads in real time. Powered by our Inbox and Messages products. 3 Conversational Engagement: Turn more signups into active, valuable customers with targeted email, chat, post and mobile push messages. Powered by our Messages product. 4 Conversational Support: Use email and messaging to get quicker responses, faster resolutions and more satisfied customers. Powered by our Inbox product . 5 Provide self-service support: Create and share content to help people better understand your product and get answers faster. Powered by our Articles product .
What is intercom platform?
Intercom is a Conversational Relationship Platform. It shows you who is using your product or website and makes it easy to personally communicate with them with targeted content, behavior-driven messages, and conversational support.
Is Intercom for you?
If you have questions you'd like answered, join us for a live AMA (Ask me anything) webinar, and evaluate if Intercom is right for your business.
What is an intercom system?
An intercom system is a two-way communication electronic device that contains circuitry for the purpose of transmitting and receiving audio and/or video transmissions. With the advent of cellular communication, digital telephone systems, and other communication devices, the use of intercoms has declined.
What is a wireless intercom?
Wireless Intercoms: In applications where wires cannot be run, a wireless system is used. There are a broad spectrum of two-way wireless communication devices that include such devices as handheld radios, outdoor wireless callboxes, as well as traditional desktop devices.
What is a two way radio?
Two-Way Radios: While these are technically not intercoms, there are two-way radios that communicate with base station intercoms. So you can have the flexibility of a mobile radio that communicates over long distances mixed with the capability a fixed intercom gives you.
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Product Description
Features: Copper conductor, stable performance, good reliability. White PVC insulated outer casing. Preconnected cable connectors for ready use. Each cable comes with 2 backup cable connectors.
What is a PLC intercom?
Power Line Carrier (PLC) intercom systems communicate using a very low FM frequency over your building's existing 110 volt AC house wiring that supplies power to receptacles and light fixtures. These intercoms are typically passed off as "wireless" intercoms since you do not have to install wiring between locations even though they communicate over wire. You just plug them in anywhere you have an outlet and they're ready to go.
How to keep intercom from buzzing?
Some intercoms require a cable with a shield around the internal wires. This shield is either a metal foil or braided wire that keeps outside electrical signals from interfering with the voice transmission. If you've ever hear a buzz on an intercom, it probably came from nearby electrical wires that were running near the intercom wires. To help eliminate this problem, never run intercom wires in parallel with other electrical wires. If you have to cross them, make sure it's at a 90 degree angle. The shield will also keep radio frequency interference of your intercom system.
What is CAT 3 cable?
Category 3 cable, commonly known as Cat 3 or station wire, is an unshielded twisted pair (UTP) cable designed to reliably carry data up to 10 Megabits/sec. The data speeds for Cat 5e is 100 Megabits/sec, and Cat 6 is 500 Megabits/sec. Cat3-6 cables are a part of a family of copper cabling standards defined jointly by the Electronic Industries Alliance and the Telecommunications Industry Association.
What is half duplex communication?
Half-duplex communication is like push-to-talk "walkie-talkie" radios or CB radios. When you want talk to someone else with a compatible device, you have to press a button to talk, let go, and then wait for a reply. The person on the other end does the same to respond to you. Neither party can talk at the same time.
Overview
Permanent systems
Traditional intercoms and public address systems are composed entirely of analogue electronics components but many new features and interfacing options can be accomplished with new intercom systems based on digital connections. Video signals can be carried as well as voice. Digital intercom stations can be connected using Cat 5 cable and can even use existing comput…
Portable systems
Portable intercoms are commonly used by special event production crews and professional sports teams. Performing arts venues such as theaters and concert halls often have a combination of permanently mounted and portable intercom elements. Motorsports race tracks often have both portable and permanent intercom stations mounted at critical points around the racecourse for use by race officials and emergency medical technicians.
Basic intercom system terms
Intercom installers, suppliers, and manufacturers often use the following terms to refer to intercom components.
• Master station or base station: These units control the whole system. Master stations initiate calls to substations and can be configured to make announcements that are transmitted over the entire intercom system.
Wiring intercoms
While every intercom product line is different, most analogue intercom systems have much in common. Voice signals of about a volt or two are carried atop a direct current power rail of 12, 30 or 48 volts which uses a pair of conductors. Signal light indications between stations can be accomplished through the use of additional conductors or can be carried on the main voice pair via tone freq…
Two-wire broadcast intercoms
Intercom systems are widely used in TV stations and outside broadcast vehicles such as those seen at sporting events or entertainment venues. There are essentially two different types of intercoms used in the television world: two-wire party line or four-wire matrix systems. In the beginning, TV stations would simply build their own communication systems using old phone equipment. H…
Four-wire broadcast intercoms
In the mid-90s four-wire technology started gaining more prominence due to the technology getting cheaper and smaller. Four-wire circuit technology had been around for quite some time but was very expensive to implement. It usually required a large footprint in the physical television studio, thus was only used at very large television stations or television networks.
Wireless intercoms
For installations where it is not desirable or possible to run wires to support an intercom system, wireless intercom systems are available. There are two major benefits of a wireless intercom system over the traditional wired intercom. The first is that installation is much easier since no wires have to be run between intercom units. The second is that you can easily move the units at any time. …