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  • Data transmission - Wikipedia
  • What is Data Communications? | Techwalla.com



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The medium (or media, if there is more than one) is the physical matter or substance that carries the voice or data transmission. Many different types of transmission media are currently in use, such as copper (wire), glass or plastic (fiber-optic cable), or air (radio, infrared, microwave, or satellite). There are two basic types of media. Guided media are those in which the message flows through a physical media such as a twisted-pair wire, coaxial cable, or fiber-optic cable; the media "guides" the signal. Wireless media are those in which the message is broadcast through the air, such as infrared, microwave, or satellite.

In many cases, the circuits used in WANs are provided by the various common carriers who sell usage of them to the public. We call the circuits sold by the common carriers communication services.The following sections describe the medium and the basic characteristics of each circuit type, in the event you were establishing your own physical network, whereas next topic describes how the circuits are packaged and marketed for purchase or lease from a common carrier. If your organization has leased a circuit from a common carrier, you are probably less interested in the media used and more interested in whether the speed, cost, and reliability of the circuit meets your needs.

Fiber-Optic Cable Although twisted-pair is the most common type of guided media, fiber-optic cable also is becoming widely used. Instead of carrying telecommunication signals in the traditional electrical form, this technology uses high-speed streams of light pulses from lasers or LEDs (light-emitting diodes) that carry information inside hair-thin strands of glass called optical fibers. Figure 3.11 shows a fiber-optic cable and depicts the optical core, the cladding (metal coating), and how light rays travel in optical fibers.

US Toll Free: +1 800-444-7644
Phone: +1 520-741-1404
Fax: +1 520-917-2254
[email protected]

Africa & Middle East
Americas
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Dataforth Corporation
3331 E. Hemisphere Loop
Tucson, Arizona (AZ) 85706-5011
USA

Lightning Data solutions easily integrate into Salesforce for an automatic connection to updated data that supercharges your sales and marketing efforts. Explore our community of data providers and download the apps in trial mode for a free assessment.

The medium (or media, if there is more than one) is the physical matter or substance that carries the voice or data transmission. Many different types of transmission media are currently in use, such as copper (wire), glass or plastic (fiber-optic cable), or air (radio, infrared, microwave, or satellite). There are two basic types of media. Guided media are those in which the message flows through a physical media such as a twisted-pair wire, coaxial cable, or fiber-optic cable; the media "guides" the signal. Wireless media are those in which the message is broadcast through the air, such as infrared, microwave, or satellite.

In many cases, the circuits used in WANs are provided by the various common carriers who sell usage of them to the public. We call the circuits sold by the common carriers communication services.The following sections describe the medium and the basic characteristics of each circuit type, in the event you were establishing your own physical network, whereas next topic describes how the circuits are packaged and marketed for purchase or lease from a common carrier. If your organization has leased a circuit from a common carrier, you are probably less interested in the media used and more interested in whether the speed, cost, and reliability of the circuit meets your needs.

Fiber-Optic Cable Although twisted-pair is the most common type of guided media, fiber-optic cable also is becoming widely used. Instead of carrying telecommunication signals in the traditional electrical form, this technology uses high-speed streams of light pulses from lasers or LEDs (light-emitting diodes) that carry information inside hair-thin strands of glass called optical fibers. Figure 3.11 shows a fiber-optic cable and depicts the optical core, the cladding (metal coating), and how light rays travel in optical fibers.

Lightning Data solutions easily integrate into Salesforce for an automatic connection to updated data that supercharges your sales and marketing efforts. Explore our community of data providers and download the apps in trial mode for a free assessment.

The medium (or media, if there is more than one) is the physical matter or substance that carries the voice or data transmission. Many different types of transmission media are currently in use, such as copper (wire), glass or plastic (fiber-optic cable), or air (radio, infrared, microwave, or satellite). There are two basic types of media. Guided media are those in which the message flows through a physical media such as a twisted-pair wire, coaxial cable, or fiber-optic cable; the media "guides" the signal. Wireless media are those in which the message is broadcast through the air, such as infrared, microwave, or satellite.

In many cases, the circuits used in WANs are provided by the various common carriers who sell usage of them to the public. We call the circuits sold by the common carriers communication services.The following sections describe the medium and the basic characteristics of each circuit type, in the event you were establishing your own physical network, whereas next topic describes how the circuits are packaged and marketed for purchase or lease from a common carrier. If your organization has leased a circuit from a common carrier, you are probably less interested in the media used and more interested in whether the speed, cost, and reliability of the circuit meets your needs.

Fiber-Optic Cable Although twisted-pair is the most common type of guided media, fiber-optic cable also is becoming widely used. Instead of carrying telecommunication signals in the traditional electrical form, this technology uses high-speed streams of light pulses from lasers or LEDs (light-emitting diodes) that carry information inside hair-thin strands of glass called optical fibers. Figure 3.11 shows a fiber-optic cable and depicts the optical core, the cladding (metal coating), and how light rays travel in optical fibers.

US Toll Free: +1 800-444-7644
Phone: +1 520-741-1404
Fax: +1 520-917-2254
[email protected]

Africa & Middle East
Americas
Asia Pacific
Europe

Dataforth Corporation
3331 E. Hemisphere Loop
Tucson, Arizona (AZ) 85706-5011
USA

The ground electronics maintenance OccFld includes the installation, diagnosis, repair, adjustment, modification, and calibration of electronic equipment and systems used by Marine Corps ground forces. The equipment and systems include various types of communications hardware, data terminals, cryptographic devices, ground radar, nuclear, biological and chemical detection electronics, unmanned aerial vehicle electronics, and a wide range of test equipment and calibration devices.

Lightning Data solutions easily integrate into Salesforce for an automatic connection to updated data that supercharges your sales and marketing efforts. Explore our community of data providers and download the apps in trial mode for a free assessment.



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