Data communication and data transfer is the reception and transfer of data on a point-to-Point or point-to-Multipoint communication network. It can be performed using discrete data transfers, point to point or multimode networks. Examples of these networks are ATM, phone, ISDN and cable modem. Other data channels include radio, television, mobile phones, personal computers and telephone networks.
The major components of data communications and data transfer are Computer Aided Environments (CAA), Computer Equipment Access (CEA), Network Access (NA), LAN/WAN and Wireless Technology. Computer Aided Environments (CAE) refers to the application software for the computers and other hardware supporting the communication and data transmission. These application software are usually based on the principals of Information Technology (IT) and have a common control system. Computer equipment access (CEA) is a type of computer network used for providing fast, error-free and reliable data communications. It involves the transfer of information in the form of bit strings from a source computer to an end computer. For fast data transfers, CEA is usually used with Wide Area Networks (WAN), Personal Local Area Networks (PLN), Local Area Networks (LANs) or Distributed Control Management (DCM).
Network Access refers to the set of card modules inside a computer that make it possible to access the local area network (LAN) through a computer network card ( NIC ) or a computer peripheral device. The main advantage of this technology is that the users do not need any extra hardware or software for the data communication and data transfer processes. A typical configuration of a WAN environment makes use of one computer per network. On the other hand, LANs make use of a number of computer per LAN. For large scale data communications, there is the Wide Area Network (WAN) and the Local Area Network (LAN).
Data Communication over Low-Cost Utilization (D CEU) is a form of multimode wireless telephony that makes use of the latest technologies such as GSM /GPRS, CDMA, TDMA, FLEX, ISDN, PDC-PAs and ISDN-PAs. In this system, the voice is converted to digital messages which are then sent over the same channels as the data communications over ATM and Fiber optic lines. The major advantages of this technology include long distance calls without long distance charges and lower long distance call costs. In addition to this, the use of this technology does not compromise the quality of voice or impede its quality at all.
Data Communication over ATM: The traditional Data Communication systems use transceivers to transfer the data signals between the source and destination. ATM is a bank of ATMs where the terminals can receive and transfer the required funds without any external assistance. ATM based Data Communication systems do not involve any type of transmission of signals in form of data, rather it makes use of the ATM hardware to capture and send the needed signals. The only thing that is required in the process is to keep track of the transactions that are going on.
The major advantage of ATM based system is that it does not suffer any type of interference or noise. On the other hand CDMA systems on the other hand make use of the carrier-grade analog signal in order to capture and transmit the desired information. The drawback of the CDMA system is that the information cannot be exchanged between the systems. The best way to transfer the data is through the use of the Data Communication over ATM. This method of data transfer does not suffer from any type of noise and interference and thus is able to provide the users with a higher quality of communication and data transfer.