0
Telecommunications
Telecommunications refer to the transmission of information over distances for the purpose of communication. In the modern age of electronics and electricity, telecommunication includes the use of electrical devices, radio and microwave communications, fiber optics, orbiting satellites and the Internet.
2,044 Questions
Did a telephone use Morse code?
Morse code was used in the 1800s. It wasn't until the late 1800s that Morse code began to be used through radio communication.
What technology can you use if cable or dsl is not available?
If cable or DSL are not available for Internet access, then you can use dial-up for low-speed access. For higher speed, you may be able to use mobile phone network access such as 2g or 3g. If that isn't available then satellite access is possible - although its usually expensive to install and run.
Who made the candlestick telephone?
what would have been the most popular candle stick telelphone during the early 1900's that most upper class families would have in their homes, and how did the calling sytem work? was there an oporater? thanks
Difference between DSL and ADSL router?
ADSL - If you think of the connection you buy from your Broadband whoever-ink, as the ADSL. DSL - From your tele socket, you need a splitter, that you can poke 2 cables into: 1 for your phone, and one to go INTO THE ROUTER (this is an dsl cable). The router (as the name suggests routes your internet traffic from differnet PC's at your site or home. via radio or network cable). You may need to set your router up, details are supplied with your broadband package. You are given one IP (a number computer number to talk in the world of networks) address (for this reason you can generally only have one router). Your router then hands out its own IP addresses to your networked printers, pc's, cctv. also generally on a DHCP. (dynamic host - so your IP number can change if its nabbed by something else, or runs out). BADMAN
Who is the actor in ATT commercials?
The person who does the voice over in Cingular/AT&T commercials is Stanley Tucci. However, the persons who provide the voices in the ginger bread house commercial are Steve Buscemi & Norm McDonald.
When was the first telegraph sent?
Even though Samuel Morse invented his version of the electrical telegraph in 1837, another inventor came up with a slightly different one in 1832.
If i remember correctly, the another guy did come up with a version of the electrical telegraph, but that it was too complicated and difficult to use, and when he was trying to sort these problems out, old Samuel Morse released his version.
There is always a transition in the middle of an interval
What are the disadvantages of optical fiber communication system?
fiber optic cables are sensitive to design irregularity and and their cost is high.
A form of digital communication was developed in the 1960s with the advent of T1 trunking. DSL was developed by Bell labs in the 1980s.
Yes, there are millions of telephones and cell phones in Egypt.
What is the farthest distance you could comunicate using a telegraph?
Electrical tapping signals that are transmitted via electrical wire can travel as far as the wire goes. Early telegraph communications traveled 40 to 50 miles on low speed telegraph wires. With repeaters installed in the wiring to boost the signal, there is no limit in distance.
I doubt there are many telegraph systems operating today.
It is interesting to consider that Morse code, or the spelling out of words in long and short audio signals, has similarities to digital technology. Digital signals are spelled out like the words of Morse code using binary coding-combinations of 1's and 0's to create the message. The telegraph office would write out the message by interpreting the dots and dashes of Morse code. The receptor for digital signals interprets the binary code to produce an audio or visual message.
What is the difference between Dial up DSL And cable?
The difference between Dial up and DSL connection, Dial up connection can only offer a top speed of 56k a second while DSL connectin ca The difference between Dial up and DSL connection, Dial up connection can only offer a top speed of 56k a second while DSL connectin can offer you speed of 6 Mb/sec and faster. DSL foes over your phone lines just like normal dial up that you need to be within range of your provider and they have to rent you a DSL modem so you can pick the DSL.
Who is the little girl in the ATT commercial?
http://images.google.com/images?q=Savannah%20Argenti&hl=en&um=1&ie=UTF-8&sa=N&tab=wi
Can you use a normal nonprepaid ATT SIM card in a prepaid ATT GoPhone?
Yes.
I have used my AT&T Wireless account SIM card in several GoPhones since breaking my original A&T phone.
Yes you can but it is against the AT&T TOS (terms of service).
GoPhone (Prepaid) Terms of Service state the following:EQUIPMENT: Your Equipment must be compatible with, and not interfere with, our service, and must comply with all applicable laws, rules and regulations. We may periodically program your Equipment remotely with system settings for roaming service and other features that cannot be changed manually. Roaming service is the use of your Equipment outside our service area. Equipment purchased from AT&T or its authorized dealers is sold exclusively for use with AT&T GoPhone service. It may not function on other wireless networks. By purchasing this Equipment, you agree to activate and use it on GoPhone service.
Uses of computer networks how do they work in office?
Say a school for instance goes out and buys 20 brand new computers. Their hardly going to buy 20 printers, one for each computer now are they...?? They one printer and network all the computers to use one printer.
Better security. Its easier to keep employees away from undesirable sites, restrict what they can and cant do, watch what they do etc....
Share an internet connection... no point in buying a connection for every computer.
File sharing... if the boss wants the secretary to get a file, but is the lazy sort who doesn't want to have to physically get up off his chair and walk into the next room to give it to her. He can just just set-up file sharing, then call her from his desk and tell her theres a new file in the shared folder.
Characteristics of sales promotion?
Writing about sales promotion tools, Prof. Philip Kotler observes - "they have 3 distinctive characteristics."
Communication: They gain attention and usually provide information that may lead the customer to the product.
Incentive: They incorporate some concession, inducement, or contribution that gives value to the consumer.
Invitation: They include a distinct invitation to engage in the transaction now (offer valid till …or till stocks last)
DSL will fasten your speeds up if you got a router as well it will make it VERY blazing fast to not be stuck in the OLD Modem Calling stuff witch does not work no more on many Cable companys!
What are the physics of a telephone?
Speaker's Vocal Chords ===
- The person speaking into the phone passes air by their vocal chords making a basic tone, the mouth then shapes the tones into words. Audible Sound Waves are produced that propogate toward the phones microphone.
- The microphone or transducer will respond to the sound waves and convert mechanical energy into electical energy. This is typically through the reverse mechanices of a speaker. In this case, the cone shaped "floating" mechanical piece reacts to the sound waves of the person speaking into the phone. This creates an oscillating motion that moves a electrical coil around a magnetic field. This produces oscillating electrical voltage/current in proportion to the speed that the microphone oscillates. At the output of the microphone is a sinusoidal electrical wave form.
- The analog electrical signal has to be digitized so that we can take advantage of computer processing in the transmission. An Analog to Digital Converter is used.
- Sending the entire raw signal takes too long. The signal is passed through a modified Fast Fourier Transform FFT routine to come up with the basic waveform coefficients.
- The person being called picks up their receiver when their phone rings and the process reverses itself.
Telephone Speaker
How old do you have to be to sign a cell phone contract with att?
in order to sign any contract with any cell phone provider, you have to be at least 18 years of age
How to fax from computer with DSL?
Internet fax uses an internet connection as its highway for sending/receiving faxes without having to use ordinary PSTN lines.
Samuel Morse was a co-developer of the telegraph system. In its infancy, the telegraph was limited to electric and/or electro-magnetic impulses: clicks, so to speak. The Morse Code was developed to enable the transmission of letters and numbers via these impulses, in a series of 'dots' and 'dashes', which were originally recorded as such on a moving paper tape. Operators soon learned to interpret the clicks without looking at the tape.
Where was first telephone call made?
Service Lines and Switchboards In 1877, construction of the first regular telephone line from Boston to Somerville, Massachusetts was completed. By the end of 1880, there were 47,900 telephones in the United States. The following year telephone service between Boston and Providence had been established. Service between New York and Chicago started in 1892, and between New York and Boston in 1894. Transcontinental service by overhead wire was not inaugurated until 1915. The first switchboard was set up in Boston in 1877. On January 17, 1882, Leroy Firman received the first patent for a telephone switchboard. Exchanges and Rotary Dialing The first regular telephone exchange was established in New Haven in 1878. Early telephones were leased in pairs to subscribers. The subscriber was required to put up his own line to connect with another. In 1889, Almon B. Strowger a Kansas City undertaker, invented a switch that could connect one line to any of 100 lines by using relays and sliders. This switch became known as "The Strowger Switch" and was still in use in some telephone offices well over 100 years later. Almon Strowger was issued a patent on March 11, 1891 for the first automatic telephone exchange. The first exchange using the Strowger switch was opened in La Porte, Indiana in 1892 and initially subscribers had a button on their telephone to produce the required number of pulses by tapping. An associate of Strowgers' invented the rotary dial in 1896 which replaced the button. In 1943, Philadelphia was the last major area to give up dual service (rotary and button).
