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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
If you mean a telex machine, it has a keyboard like a typewriter and also has a printer. That is why it is also known as a "teleprinter". If you know someone you want to send a message to has a similar telex machine, you can set up a call to their "telex service number", just like a telephone call but with no speech. Then you can type in your message and the the telex machine at the other end of the line will print it out.
telex
The international telegraphic message-transfer service consisting of a network of teleprinters. Subscribers to a telex service can exchange textual communications and data directly with one another. Telex systems originated in Europe in the early 1930s and were widely used for several decades. The ability to conduct high-speed digital communication over regular telephone lines led to a decline in the use of telex, but it is still used as a data transmission service for applications in which high transmission speeds are not necessary or in areas where more modern data equipment is not available.
Source: Britannica Concise Encyclopedia.
Answer: Sometimes
There are many different packages available for cable and DSL. A high-dollar DSL connection is probably going to be much faster than the penny-pinchers cable modem.
Having said that, it has been my personal experience that a cable connection is usually a little faster than a similarly priced DSL connection.
What is the maximum throughput of ADSL?
Your top adsl speed is based up on different of factors.
Some of them are:
- Distance between your local dslam and your router
- Quality of your telephone line
- Quality of your router
- Using wifi access or not(since wifi is slower than using old fashioned cords)
- Even your PC overall perfomance can increase or decrease your adsl speed(download or upload) since PC's with low ram capability or slow hard disk drives tend to give a bad influence to your maximum download adsl speed.
What was the purpose of the first telephone?
So people could communicate without too much labor. It was invented to make communication easier.
Identify some business value of telecommunication?
Telecommunication is important in a company for the purpose of quickly routing callers to the proper destination in an effort to properly handle the callers needs.
Many times customers or clients call a company without knowing exactly who they need to speak with. All they know is the problem or question they are calling about. A well designed telecommunication system will help the caller get through to the proper personnel.
In some cases callers don't need to speak to a live person. Telecom systems can also provide options to answer caller's questions in an interactive manner by allowing the caller to respond by using the touch tone keys on their phone.
A good telecommunication phone system will enhance the callers results and will also have a positive reflection on the company.
If you buy an iphone 3g can you just stick your ATT SIM card from your previous cell phone in it?
Hey
It depends on your location and your network For example, in the US, AT&T have a deal with Apple for a 2 year contract.
Now, you can always jailbreak your iPhone and then put in the other Sim card. You will retain your number. But I can't really say if your network will trace it or not.
30,000
Not sure what it stands for but the term is used here in Ireland for Direct Dial Numbers.
For example, if a small company with say 20 employees, has only 6 phone lines, it can purchase say 20 DDI numbers as well from the telephone company, and provide one Direct Dialling Number to every employee. In this way customers and suppliers can ring people in the company directly, and the company uses 20 phone numbers with only 6 phone lines.
A PBX is needed in the company to distribute the incoming calls to the correct telephone handset.
Perhaps it stands for Direct Dial Incoming ?
Can you use a att sim card on a tmoblie phone?
No you can not. The reason is that carriers lock their phones to only be used on their service. The only way you may do this is to go to a T-mobile store and ask if they can unlock it. They may or may not.
There are also services online to unlock your phone, but it is not free.
Where was the Morse Code created?
Morse code was developed by a man named Samuel Morse. In 1844, the first message using this special code made of various sequences of dots and dashes or short and long signals was sent over a telegraph line between Baltimore and Washington.
In 1848, the code was adapted by a man named Friedrich Gerke and his version is the one that has become internationally accepted and used.
What equipment is needed to hook up DSL to a computer with Windows XP?
A modem, which you normally get from the DSL provider, is really the only thing you need (apart from a computer).
But it is recommended to get a home router/firewall as well, it gives basic protection against computer attacks from the internet and lets you hook up a second computer to the same DSL connection.
See related Wikipedia link.
well you should not solve a problem on the phone its better to do it in person so now if you have anything els to ask me just have a question out there and ill help you with anything els you need and ill tell you somethings about god!
What does a microphone in a telephone do?
it does peoples moms it does peoples moms it does peoples moms
What are the of telephone ethics?
telephone ethics refers to the quality of your voice, and your ability to express yourself clearly and concisely are most important.
- develop an excellent vocal personality when you are speaking
- observe different techniques of greeting when you pick up the phone
- always use polite words
- secure the household by not giving out too much information
- do not give your number to the caller who got a wrogn number
ETC.. ETC...
How did the telegraph influence long distance communication?
Needing rapid communication, railroad companies built telegraph lines along the railroad rights of way as the track was laid. The linkage made these lines easier to protect and maintain than the original First Transcontinental Telegraph lines.
What are the types of telephone calls?
There are various types of telephone calls that can be made. Below I will list some of these types for you.
Long Distance Calls
Local Calls
Three Way Calls
Conference Calls
Dial Around Calls
Collect Calls
Third Party Calls
When and where was the enigma code invented?
The Germans used the Enigma in WW2. It had a set of gears that when you pressed a letter on the keyboard, it seemed to randomly type another letter on the sheet of paper you were typing on. only if you had the same set of gears could you translate the code to English. The gears were interchangeable so you could create many different codes.
Can you use cable modem for ADSL connection?
No, a cable modem cannot be used for an ADSL connection. Cable modems are designed to work with cable internet services, which use coaxial cables, while ADSL (Asymmetric Digital Subscriber Line) requires a DSL modem that connects via telephone lines. Each type of modem is specifically engineered for its respective technology, making them incompatible with each other.
What is the IP telephone system?
The IP telephone service also know as the Internet telephony or Voip, Voice Over Internet telephony, is a way of making calls over the internet. These calls are usually free and can save you money on long distant phone calls. There is a also a option to have video calls so you are able to see the person that you are talking to.
Italian inventer of a wireless telegraph system in 1895?
The man who invented the wireless telegraph in 1895 was Italian, Guglielmo Marconi. Stop cheating on your homework ;)
What are the abbreviations regarding telecommunication sector?
ACCPR: Adjacent Channel Coupled Power Ratio
ACIPR: Adjacent Channel Interference Power Ratio
ADC: American Digital Carrier (D-AMPS)
ADC: Analog-Digital Converter
ADPCM: Adaptive Differential Pulse Code Modulation
AFR: Active Feedback Resonator
AGC: Automatic Gain Control
AM: Amplitude Modulation
AMPS: Advanced Mobile Phone System
ANSI: American National Standards Institute
APPL: Analog PLL
ASK: Amplitude Shift Keying
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BCDMA: Broad Band CDMA
BER: Bit Error Rate
BETRS: Basic Exchange Telecommunication Radio Service
BPF: Bandpass Filter
BPSK: Binary Phase Shift Keying
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CADN: Cellular Access Digital Network
CAI: Common Air Interface
CDMA: Code Division Multiple Access
CDPD: Cellular Digital Packet Data
CELP: Code Book Excited Linear Predictive Coding
C/I: Carrier to co-channel Interference
CPE: Customer Premises Equipment
CPFSK: Continuous Phase Frequency Shift Keying
CQM: Channel Quality Measurement
CRC: Cyclical Redundancy Check
CT: Cordless Telephone
CTIA: Cellular Telecommunication Industry Association
CVSM: Continuously Variable Slope Delta Modulation
CW: Continuous Wave
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DAC: Digital-Analog Converter
DAMPS: Digital AMPS
dB: Decibel
dBc: Decibel below carrier (measurement of phase noise)
dBm: Decibel (relative to 1 mW)
DBM: Double Balanced Mixer
DBS: Direct Broadcast Satellite
dBW: Decibel (relative to 1 Watt)
DCS: Digital Cellular System
DECT: Digital European Cordless Telephone
DFT: Discrete Fourier Transform
DPLL: Digital PLL
DPSK: Differential Phase Shift Keying
DQPSK: Differentially Encoded Quadrature Phase Shift Keying
DR: Dynamic Range
DS Direct Sequence
DSP: Digital Signal Processor
DTMF: Dual Tone Multi Frequency
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EMC: Electromagnetic Compatibility
EMF: Electromagnetic Field
EMI: Electromagnetic Interference
EMR: Electromagnetic Radiation
E-TACS: Extended Total Access Communication System
ETDMA: Enhanced TDMA (with DSI- Digital Speech Interpolation)
ETSI: European Telecommunication Standard Institute
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FCC: Federal Communications Commission
FDD: Frequency Division Duplex
FDM: Frequency Division Multiplex
FDMA: Frequency Division Multiple Access
FFSK: Fast Frequency Shift Keying
FFT: Fast Fourier Transform
FH Frequency Hopping
FIR: Finite Impulse Response (filter)
FM: Frequency Modulation
FPLMTS: Future Public Land Mobile Telephone Service
FSK: Frequency Shift Keying
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GaAs: Gallium Arsenide
GBBC: GSM Baseband Codec
GFSK: Gaussian Frequency Shift Keying
GMSK: Gaussian-filtered Minimum Shift Keying
GOLD: GSM One-Chip Logic Device
GPS: Global Positioning System
GSM: Global System for Mobile Communications
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HBT: Heterojunction Bipolar Transistor
HEMT: High Electron Mobility Transistor
HPF: High Pass Filter
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IF: Intermediate Frequency
IFF: Interfrequency Filter
IIR: Infinite Impulse Response (filter)
IM: Intermodulation
IMD: Intermodulation Distortion
IMR: Intermodulation Distortion Ratio
IP: Intercept Point
ISM: Industrial Scientific Medical (frequency band)
ISO: International Organization for Standardization
ITU: International Telecommunications Union
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JDC: Japanese Digital Carrier
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LAN: Local Area Network
LEO: Low Earth Orbiting Satellite
LF: Loop Filter
LNA: Low Noise Amplifier
LO: Local Oscillator
LPC: Linear Predictive Coding
LPF: Low Pass Filter
LPLL: Linear PLL
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MAC: Medium Access Control
MAHO: Mobile Assisted Handoff
MAN: Metropolitan Area Network
MBS: Mobile Broadband System
MDSB: Mobile Data Base Station
MESFET: Metal Schottky FET
MFSK: Multi Frequency Shift Keying
MMIC: Monolithic Microwave IC
MMU: Memory Management Unit
MODEM: Modulator/Demodulator
MOS: Metal Oxide Semiconductor
MOSFET: Metal Oxide Semiconductor FET
MS: Mobile Station
MSA: Metropolitan Service Area
MSK: Minimum Shift Keying
MTSO: Mobile Telephone Switching Office
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NAMPS: Narrow Band AMPS
NCDMA: Narrow Band CDMA
NMS: Network Management System
NMT: Nordic Mobile Telecommunication System (cellular communication system in Scandinavia)
NPR: Noise Power Ratio
NTM: Network Traffic Management
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OSI: open system interconnection.
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PAM: Pulse Amplitude Modulation
PBX: Private Branch Exchange
PCM: Pulse Code Modulation
PCMCIA: PC Memory Card International Association
PCN: Personal Communications Network
PCS: Personal Communication Services
PD: Phase Detector
PDM: Pulse Duration Modulation
PDU: Protocol Data Unit
PHP: Personal Handy Phone (Japan)
PHS: Personal Handy Phone System (Japan)
PIN: Positive Intrinsic Negative (diode)
PLL: Phase-Locked Loop
PLMN: Public Land Mobile Network
PM: Pulse Modulation
POTS: Plain Old Telephone Service
PSD: Power Spectral Density
PSK: Phase Shift Keying
PUREG: Power Up Registration
PWM: Pulse Width Modulation
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Q: Quality Factor (e.g. filter)
QAM: Quadrature Amplitude Modulation
QPSK: Quadrature Phase Shift Keying
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RELP: Residual-Excited Linear Predictive Coding
RF: Radio Frequency
RFI: Radio Frequency Interference
RFIC: Radio Frequency IC
RITL: Radio-in-the-Loop
RPE-LTP: Regular Pulse Excitation-Long Term Prediction (GSM speech encoding method)
RSA: Rural Service Area
RSSI: Radio Signal Strength Indicator
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SAW: Surface Acoustic Wave (filter)
S/H: Sample and Hold
SIEGET Siemens Grounded Emitter Transistor
SINAD: Ratio of Signal plus Noise plus Distortion to Noise plus Distortion
SIM: Subscriber Identity Module
SMS: Short Message Service
S/N: Signal to Noise
SNR: Signal-to-Noise Ratio
SPLL: Software PLL
SS: Spread Spectrum
SSB: Single Sideband
SWR: Standing Wave Ratio
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TACS: Total Access Communication System (analog cellular communication in UK)
TCXO Temperature-Compensated Crystal Oscillator
TDD: Time Division Duplex
TDM: Time Division Multiplexing
TDMA: Time Division Multiple Access
THD: Total Harmonic Distortion
TIA: Telecommunication Industry Association
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UMTS: Universal Mobile Telecommunication Service
UHF: Ultra High Frequency
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VCO: Voltage-Controlled Oscillator
VCVS: Voltage-Controlled Voltage Source (filter)
VCXO: Voltage-Controlled Crystal Oscillator
VHDL: Very High Speed Integrated Circuit Hardware Descriptive Language
VHF: Very High Frequency
VQ: Vector Quantization
VSAT: Very Small Aperture Terminal
VSELP: Vector Sum Excited Linear Predictive Coding (IS-54 speech encoding)
VSWR: Voltage Standing Wave Ratio
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WAN: Wide Area Network
WARC: World Administrative Radio Conference
WCPE Wireless Customer Premises Equipment
WLAN: Wireless LAN
WLL Wireless Local Loop
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XMTR: Transmitter
XTALK: Crosstalk
Morse code alphabet (in international Morse code) is:
A: .-
B: -...
C: -.-.
D: -..
E: .
F: ..-.
G: --.
H: ....
I: ..
J: .---
K: -.-
L: .-..
M: --
N: -.
O: ---
P: .--.
Q: --.-
R: .-.
S: ...
T: -
U: ..-
V: ...-
W: .--
X: -..-
Y: -.--
Z: --..
