While it is true, the study of computer networks is completely broad and, as a consequence, there are numerous terminologies that are worth knowing to understand this environment so essential in the daily life of human beings today. One of those terms, refers to the well-known “telephone cables” that are essential in all communications companies.
In this sense, telephone cables are the elements that basically allow different kinds of connections to provide certain services to people. Therefore, they are classified as a vital piece when making telephone communications.
Now, beyond this, it is necessary to know how telephone cables are defined and what they are for. Like, differentiate the types of cables and discern that other network cables are used when connecting wired networks. This being, all the information that we will teach you below.
What is a telephone cable and what is it used for in computer networks?
In general terms, a cable is defined as a metallic wire or a set of wires that has an insulating sheath and serves as a conductor. Thus, in computer networks, a telephone cable consists of a large number of electronic conductors or transmission lines that form a core to each other. Also, over that core, is a protective jacket (or cover) that prevents any agent causing damage from entering.
In that sense, the telephone cable refers to a physical cable or other means of transmission of signals that has the ability to connect the user’s telephone set to the telecommunications network. In this way, it forms a flexible, insulated and wrapped electrical line that achieves the exchange of electrical signals from one point to another.
As a consequence, telephone cables are those that They serve to facilitate communication and send the sound from the rosette (or PTR, located on the wall of the house), to the telephone section. Thus, they are used to transmit voice in analog form and regardless of the distance.
In addition to this, due to technological advances, at present, these cables are able to transmit data thanks to the copper wire of the phone. Being the system ADSL which has taken advantage of the existing wiring in the homes to provide high speed internet access. For which, a router that takes care of sending all the data through the copper telephone cable that is in almost every house.
Types of telephone cables What are all those that exist and how do they differ?
While it is true, Three types of telephone cables can be distinguished, mainly, in the environment of computer networks. Which have different characteristics that must be known during the study of the telephone cables.
Reason why, below, we mention what they are and what they consist of:
Twisted pair cable
It refers to traditional phone cord which consists of a single pair of twisted cables, as its name implies. Thus, it is characterized by containing two copper conductive cables insulated braided to complete what is the telephone circuit.
For many years, the majority of households in Spain and worldwide, adopted this type of wiring. Considering that, the most common variation of the same, it is a telephone cable with two twisted pairs that provide greater power. Since, the first twisted pair is used for the house phone and the second twisted pair is left available to install a second line.
Usually refers to a type of cable that It has a copper conductor in the middle along with an aluminum outer jacket that complete the circuit. In that sense, its main characteristic is that it is a type of telephone cable that provides a noticeable increase in transmission speed and bandwidth speed, compared to twisted pair cables.
Consequently, coaxial cable is commonly used in city-wide networks, whether telephone systems or cable television systems, thanks to the ability to carry voice, video and data communication at the same time, with total quality. Therefore, this type of cable not recommended for a common home phone line.
Category 5 cable
It is also known as “CAT5 cable” y is a kind of cable that has two pairs that are basically designed for voice circuits. Despite the fact that, at present, category 5 cable has also been manufactured with the features required for be able to transmit data (for example, as applications Ethernet).
Now, highlighting its most important particularities, we mention that, CAT5 cable offers superior performance over traditional twisted pair cable and for that reason, it has become the telephone line that is pre-wired in new homes, by default. Reason why, various types of CAT5 cable can be found on the market, nowadays.
In that sense, they offer the improved version of the CAT5 what it is called “CAT5e” and it specializes in providing data speeds faster than the first. Besides, there is also another known as “CAT6” which is superior to the two mentioned above. That is, offers considerably higher data rates than CAT5 and CAT5e.
Since the cable is the medium from which information flows through the network and, nowadays, technological advances have been remarkable; of course, there are other network cables that are used to connect wired networks. Taking into account that, generally, the type of cable used always will remain subject to the network topology, the type of network you use and its size.
As a consequence, in this section of the post, we will let you know which are the main cables used for this, apart from those named above:
Fiber optic cable
This consists of a crystal center encompassed by several layers of protective material and thus, allows to transmit light signals (instead of electrical signals) to be able to cancel out any kind of interference. That is why, just as it is used in the connection of networks between buildings due to its humidity and solar exposure, it is also used in certain environments where there is a lot of electrical interference.
For its part, unlike twisted pair cables and coaxial cables, fiber optic cables are suitable for sending signals over much greater distances. Added to this, the amount of information they manage to transmit is abominable and for this reason, they are considered ideal for carrying out interactive services or videoconferences, for example.
Among other characteristics, we highlight that, in fiber optic cables a plastic covering is used to house the core fiber. Furthermore, the outer insulation is made of PVC or Teflon and thanks to the fact that they have Kevlar fibers, their breakdown is much more difficult.
Wireless LAN networks
As if that were not enough, to offer a new solution to users, the experts have designed the possibility of implement LAN networks without the need for a telephone cable. In this case, what they do is, use high frequency or infrared radio signals to communicate. Thus, a type of connection suitable for use in laptops or buildings where it is impossible to install a wired network.
For its part, wireless LAN networks are characterized from the rest because Each point of the network has an antenna from which it emits and receives the indicated signal. This is why, if it is required to implement for long distances, it will be necessary to use satellites or mobile phones. However, these types of networks are very expensive, offer low security and are susceptible to electromagnetic interference. Even, its speed is lower than networks that use cables.
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