telecommunications

1. TELECOMMNUNICATIONSTELECOMMUNICATIONS

2. INTRODUCCTION
The need for the Communications over the longer distance has become the most important
aspect of the human lives. The term telecommunication is applied on the number of things
such as internet, mobile phones, VOIP, satellite systems, radio, television, LAN and satellite
phones. It is a great medium for the distant educational resources, business promotion, voice
communication and entertainment. It has reduced the need of physical travel as with its power
we can communicate with each other through the video conferencing, emails, chats, and
internet phone calls. It has made the people from all around the world to come closer to each
other. It has great impact on the large number of the businesses.
Today we need to communicate with the people on the other part of the globe.
Telecommunication is the electronic transmission of the voice, data, text, images and video
signals over a long distance through different mediums such as micro waves, radio waves and
fiber optic cables etc. A telecommunication networks consist of multiple transmitting and
receiving stations. Right now, as seen in machine to machine with AT&T, there's advances
where telecommunication will be able to transmit data from telecommunication systems to
computers to analyze data in a real time environment.
Telecommunication includes the satellite systems, broadband systems, microwave systems,
digital networks, telephone networks, radio stations, LAN and wireless networks. In a telecom
network, data is transmitted in the form of communication signals known as carrier wave that
travels over the radio or microwave. The telecom systems consist of three basic elements i.e.
transmitter, transmission medium and receiver. The transmitter and receiver can be combined
into a single device known as transceivers.
take from: http://www.theitlibrary.com/telecommunication.html

3. Telecommunications: a brief historical review

5. Take from: guide 26 telecommunications

6. Telegraph 1840s; take from:
http://www.greatsouthbay.com/WiredT
elegraphy.htm
IMPORTANT DATA
Code Morse; take from:
http://periodico-escolar-
elangel.blogspot.com.co/2016/04/sa
bias-que.html

7. Telephone by bell; take from:
http://www.carnetdevol.org/Bell/Phon
e.html

8. video links related to the subject
• Telegraph’s Morse:
https://www.youtube.com/watch?v=CwKu2u9MMuM
• communication between England and Canada
https://www.youtube.com/watch?v=VM3JEUk6Q2s

9. EXERCISES
Read the text previous, then look at these statements. Are they true or false?
You may need to use your own knowledge as well as information from the text.
1. Samuel Morse was it who developed the telegraph?
2. Marconi established long-distance telegraph communication by
transmitting between England and France.
3. Television (TV) was first established in 1947. the transistor and
microelectronic integrated circuit technology were further advances in
technology?
4. One of the very latest developments is the optical fibre cable.
5. Problems of noise and interference could be solved in a digital system.

10. IMAGENES
FIG. 1: time line

11. FIG. 2: old telephone

12. FIG. 3: modern telephone

13. EXERCISES
1. Match the following dates with the events that occurred between them
A)1970-1980 1) digital (PCM) telephony
B) 1934-1940 2) telegraphy and first telephone
C)1840-1878 3) digital data networks
D) 1960-1970 4) telex, television and radar.
2. What are the differences between phone of the Figure 2 with Figure 3 ?
3. Did you ever use the phone that shown in Figure 2?

14. deepen reading

20. EXERCISES
Based on the previous reading answer the following questions:
1. What are the types of cables used for transmission and reception of information?
2. What are the parallel wires?
3. which is the disadvantage of parallel wires?
4. Which transmission line cables can to reduce interference effects?
5. which causes an unwanted signal is canceled?
6. What helps a braid?
7. What determines the dimensions of the ducts?
8. What determines the dimensions of the ducts?
9. What is done inside the optical fiber?
10. What are the advantages of optical fibres?

21. APPLICATIONS
open the following links to learn telecommunications applications
• https://prezi.com/geff7nmj1khp/aplicaciones-de-las-telecomunicaciones/
• http://www2.lbl.gov/ICSD/Niles/NilesChap3_5.html
• http://www.nist.gov/el/isd/ieee/upload/tutorial-telcom.pdf
• funny definition:
• https://www.youtube.com/watch?v=HKKO1z_F5AE
• summary of the history of telecommunications:
• https://www.youtube.com/watch?v=dLzgRU25tXM
• telecommunications related issues:
• https://www.youtube.com/watch?v=jbNVE41klHA