ANALOG TELECOMMUNICATION: It is the one by which an electromagnetic phenomenon (wave) that travels through a medium (a cable, the air, etc.) is modulated to be transformed into a signal that can be encoded through a telecommunications instrument.

BEEPAZO: Sound, analog or digital message sent through a personalized wireless device “radio beep” or beeper.

CENTRAL COMMUNICATIONS STATION: It is the one that receives messages from senders and receivers, managing their emission and reception, made up of one or more antennas that allow reception from various points, said points that can in turn be the devices or other Information repeater antennas to strengthen the signal being transmitted and maintain the fidelity/integrity of the information.

COMMUNICATION: It is the transmission of one or more messages between two or more people directly or with analog or digital equipment, it can give from the one who sends the message to several receivers (unilateral), or it can be bidirectional, that is, the sender and the receiver can exchange roles with the corresponding pauses, indications and interruptions to understand what is being transmitted.

CONCESSION: It is when the permission or right is granted to an individual, private company or company, to exploit a good or services during a certain time. In telecommunications, to legally use the distribution and management of information, through frequencies and bandwidths; these concessions are necessary. Each country has specialized federal departments. In Mexico, this is done before the secretariat of communications and transportation. They are specifically published in the Official Gazette of the Federation.

DIALING BY TONES: It is a system known as multifrequency (DTMF, Dual Tone Multy Frequency), for signaling on analog lines in the voice frequency band between communication devices (of great importance to make a connection with the central communications station). It was mainly composed of levers and transistors.

DIGITAL TELECOMMUNICATION: Is one in which a signal recognized and manipulated as analog, is converted to 0 or 1 as part of the binary encoding to be manipulated through an electronic communication device.

DIGITAL TONE DIALING: Similar to tone dialing, with the difference that integrated circuits are used in digital, avoiding dialing errors and interruptions are detected more quickly. Taking advantage of the technological advances that digitization implies.

PAGER (Beeper / pager / pager / pager): Device that received short messages, it is said that its predecessors date back to 1921 and 1949, the models that boomed with a digital liquid crystal display, with digital circuitry that allowed the alert by vibration; They were widely used in the 90’s during the 20th century, some authors mention that they were used for the last time in 2012 when their operating frequencies were canceled.

TELECOMMUNICATION: It is the sending of messages over long distances. In recent decades, analog and digital media have been used that take advantage of the development of technology.

VERTEBRAL COLUMN: Belongs to the bone system. It is a set of vertebrae that support the trunk of the human being (where his vital organs are located) and allows him to sit or stand when he is in full health. It is used in a figurative sense to mention something that is the pillar or the basis of the topic being discussed.