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What is carrier telephony and what are the features of carrier telephone system?
Wiki User
∙ 10y ago
Carriers are the companies that construct and maintain the networks that provide telephone services.
Carrier telephony is a method of transmitting several telephone channels over a single pair of wires. It was used extensively throughout the world in the 1940s through 1980s prior to the introduction of digital transmission systems. Carrier telephony systems ranged from single channel systems that transmitted one carrier channel on top of a normal voice frequency channel to co-axial cable systems that had thousands of channels. It was mostly used to provide trunk lines between cities although subscriber carrier systems did exist.
Wiki User
∙ 10y ago
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What is Analog carrier system used in telephony?
Analog Carrier System is a transmission system that uses repeaters that compensate for analog medium impairments, and produce output signals that are linear-scaled versions of input signals. Analog carrier systems can carry speech, data, video and supervisory signals although they are best suited for speech signals.
Does demodulated output depend on carrier amplitude?
Only in an AM system. In an FM system, variations in carrier amplitude are ironed out with hard limiting before demodulation.
Which communications technique combines digital and analog technology to transmit data?
the digital carrier loop system
What what did Erna Hoover invent?
erna hoover invented the first computerized switching system for telephone call traffic.
Why values of modulation index greater than one are not used in full-carrier AM system?
If the modulation index is greater than 1 (more than 100% modulation) the modulated carrier signal is periodically reduced to zero. This does not effect the transmitter but at the receiver these "dead carrier" intervals result in dropouts in the audio stream from the loudspeaker producing a distorted output that is difficult to understand.
A unified integrated communications system in an enterprise provides telephony features to the desktop over?
a LAN
When was System X - telephony - created?
System X - telephony - was created in 1980.
What is Analog carrier system used in telephony?
Analog Carrier System is a transmission system that uses repeaters that compensate for analog medium impairments, and produce output signals that are linear-scaled versions of input signals. Analog carrier systems can carry speech, data, video and supervisory signals although they are best suited for speech signals.
Explain the different features of a telephone system and how to use them in the workplace?
k
Was the Electronic Key Telephone System like the PBX?
The Electronic Key Telephone System offered most of the features of a PBX, especially the hybrid version
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.
What is computer telephony integration?
techniques behind computer telephony integration "Computer Telephony Integration (CTI), is a concept that enables computers and phone systems to communicate with each other. In fact, CTI effectively merges the functions and features of each of these two technologies into one integrated system. CTI in its simplest terms includes placing and answering voice, fax, and data calls." - Database Systems Corp. reference Computer Telephony in Related Links below.
What is the present of telephone?
Evolution of telephone system has brought up IP PBX in the market. This is the result in the integration of the internet and telephone technologies. The features offered by IP PBX is more sophisticated compare to the traditional phone system. The best part of this is that,the system is very cost effective.
What is sigtran?
SIGTRAN (for Signaling Transport) is the standard Telephony protocol used to transport Signaling System 7 (SS7) signals over the Internet. SS7 signals consist of special commands for handling a telephone call.
What can modernization do?
The telephone system today is a development of the integration of the telephone and the internet technologies. IP phones for example has features that will help you screen or block unwanted calls, forward or divert calls and get updates with your online communication system.
Is SIP trunking a Voice over Internet Protocol service?
Yes, it is a Voice over Internet Protocol service offered by many Internet telephony service providers. It connects a company's private branch exchange (PBX) telephone system to the public switched telephone network (PSTN) via the Internet.
What can modern phones do?
The telephone system today is a development of the integration of the telephone and the internet technologies. IP phones for example has features that will help you screen or block unwanted calls, forward or divert calls and get updates with your online communication system.
