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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

What was the 1980 ATT stock price?

http://finance.yahoo.com/q/hp?s=T

Caution: The current company known as AT&T is not the same company that was known as AT&T in 1983. The current company was a wholly owned subsidiary of AT&T in 1983. The company currently called AT&T bought the original AT&T and changed its own name from SBC Corp to AT&T.

Old AT&T (AT&T Corp) Month End Prices:

(Actual prices not split adjusted)

Jan 83 69.25

Feb 83 60.50

Mar 83 64.38

Apr 83 68.00

May 83 65.88

Jun 83 63.50

Jul 83 61.00

Aug 83 65.50

Sep 83 65.00

Oct 83 62.00

Nov 83 64.00

Dec 83 59.63

http://www.historicalstockinfo.com/babybells.html

What is the highest paying telecommunications job?

Asdie from CEO/CFO type positions? Being Salesman Pete Pianchini at XO Communications in Washington DC. He has the XM/Sirius, EPA, Harpo Productions (Oprah) and Gannett New Service telecom contracts and makes well over $200,000 a year....without lifting a finger.

How many cell towers does American Tower own?

American Tower has a portfolio of approximately 70,000 properties, including wireless towers, broadcast towers and Distributed Antenna System (DAS) networks. They own 28,463 towers in the U.S.

Internationally, they lease over 41,000 towers in Brazil, Chile, Colombia, Costa Rica, Germany, Ghana, India, Mexico, Peru, South Africa and Uganda.

What is ISDN protocol stack?

Integrated Services Digital Network (ISDN) is a digital, point-to-point network capable of transmitting speeds of about 2Mbps. A computer connects to an ISDN line via an ISDN adapter and uses the same type of wiring as a Telephone wire. The only difference is ISDN can carry analog (voice) and digital signals, so it can be used to connect to the Internet. It can be connected by the phone company but it is rarely used as it needs special equipment and is more expensive than other way.

What are the merits of communication?

Proper communication mostly leads to understanding. Some people usually defer and encounter conflict simply because they are not communicating as well as they should.

How do you connect an Ethernet dsl cable to the back of your modem if the phone line port is smaller than the Ethernet dsl cable?

You don't - you'll need an Ethernet card for your computer. A regular voice/fax modem is different than a high-speed/network connection, so you need a different 'card' (with a socket that will match your cable). If you can't find a socket that your Ethernet cable fits, then you don't have an Ethernet card installed!

Can you buy an unlocked GSM phone and use the Sim card from your old ATT Cellular Nokia GSM phone without Cingualr having a problem with it and having to sign a new contract?

GSM PhoneAs long as your carrier uses GSM (AT&T, T-Mobile) and SIM card works in your current device you can use an unlocked GSM device. This only makes Voice service work however. If you want data services to work you will need to get the data settings from your carrier and will most likely have to contact the device manufacturer to get them entered correctly.

If an Unlocked GSM device states it is 3G or 4G compatible it does not mean that you will be able to use that part of your carrier's network. For instance AT&T and T-Mobile use different bandwidths for 3G/4G service not all devices will be compatible.

As always, before you buy an unlocked phone you might want to call your provider to make sure it has the right capabilities for you.

All about the telephone?

There are many topics about telephone. Whether small business telephone systems, virtual PBX phone system, etc. But check these entries in Wikipedia: http://en.wikipedia.org/wiki/Private_branch_exchange http://en.wikipedia.org/wiki/Telephone For some telephone services information check also this link: http://www.ringcentral.co.uk/

Who is Phil Morse?

Phil Morse is an e-marketer from the UK but living in southern Spain. He has previously worked as a journalist and a nightclub promoter/DJ.

There is a well-known artist from New Hampshire, named Phil Morse. His work includes woodwork, fine art, figurative and social polictical commentary.

Another Phil Morse is also the vice chairman of the Boston Red Sox.

What is frequency interleaving?

Wideband signal generation systems and methods are provided which employ frequency interleaving for generating wideband signals. A general method increases a digitally synthesized signal's bandwidth by frequency interleaving multiple digitally synthesized signal sources of narrower bandwidth. Frequency interleaving creates a continuous wideband signal by summing multiple narrower band signals that overlap in frequency. According to certain embodiments, digital signal processing (DSP) and analog mixing are used to create the multiple narrower band signals such that a high fidelity, continuous wideband signal is produced when the multiple narrower band signals are summed.

What is the final stage of a transmitter in telecommunication?

The power amplifier that drives the antenna.

In CW transmitters and some AM transmitters this stage is also the modulator, in others (and in non-AM transmitters) the modulator is in an earlier stage.

What is a DSL filter used for?

A DSL filter is used to shield telephones, fax machines, etc, from "digital noise" and / or unwanted interference from other devices. They are recommended for use with most landline phones and similar devices.

What does DRFU stand for?

It is a functional card that sits in a BTS (A base transceiver station - a piece of equipment that facilitates wireless communication between user equipment and a network) and uses a Microwave band as link channel.

What is spectral evidence?

what is spectral evidence

Spectrum (spectral) refers to different frequencies of light associated with a substance.

What are the types of glass?

Some of the more common ones are soda-lime glass (window glass), Wheeling (moldable) glass, borosilicate glass (Pyrex), and quartz (hard) glasses.

Your question doesn't make it clear if you're thinking of types in an industrial, architectural, or technical sense.

What was the first US satellite?

Explorer 1 was launched by the US on 31 January 1958, cylindrical in shape as opposed to the 'Sputnik' which had been round. It remained in orbit until March 1970. Its major achievement was the discovery of the Van Allen radiation belts around the Earth.
The first was Vangaurd.
The first successful U.S. satellite was Explorer I. It was launched into Earth orbit by the Army on January 31, 1958, at Cape Canaveral, Florida, four months after Russia orbited Sputnik. It weighed 18 pounds and had a cylindrical shape. It was 80 inches long and six inches in diameter.