Asynchronous Transfer Mode (ATM)
A Case Study
Table of Contents:
Introduction ………………………………… 3
Overview ………………………………… 3
Innovative Aspects ………………………………….. 5
Advantages …………………………………… 6
Disadvantages …………………………………… 6
Conclusion …………………………………… 7
Introduction:
Asynchronous Transfer Mode (ATM) is a high speed network technology which is designed to support both voice and data communications. It was initially developed to meet the needs of the Broadband Integrated Services Digital Network, in the late 1980s and designed to combine telecommunication and computer networks. It was originally designed for use in public networks, but now has also been deployed as a major backbone technology for private networks.
ATM uses asynchronous time-division multiplexing to encode and transfer data in the form of cells or packets of a fixed size. It is normally used by Internet service providers on their private long-distance networks. It operates at the data link layer (Layer 2 in the OSI model) over either fiber or twisted-pair cable. It uses a connection-oriented model in which a virtual circuit must be established between two endpoints before the actual data exchange occurs. These virtual circuits may be dedicated connections that are usually preconfigured by the service provider, or “switched”, i.e. set up on a per-call basis using signaling and disconnected when the call is terminated.
ATM basically is a cell-relay technology which divides upper-level data units into 5...
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... most sort after network protocol standards in use today.
REFERENCES:
Nake, N. (2013). An Overview of Network Architecture and security framework of Asynchronous Transfer Mode, Retrieved from http://www.ijsrp.org/research-paper-0413/ijsrp-p16118.pdf
Broadband Access System for ATM (Asynchronous Transfer Mode) and non-ATM services (n.d.). Retrieved from http://www.ekt.gr/content/display?ses_mode=rnd&ses_lang=el&prnbr=14923
Asynchronous Transfer Mode (1996). Retrieved from http://www.govexec.com/technology/1996/06/asynchronous-transfer-mode/545
Greg28. (2012, February 9). Asynchronous Transfer Mode(ATM). [Blog post]. Retrieved from
http://gregatm.blogspot.com.au/
Asynchronous Transfer Mode (ATM) (n.d.).Retrieved from
http://www.technologyuk.net/telecommunications/communication_technologies/asynchronous_transfer_mode.shtml
COMP09022 Network Design BSc COMPUTER NETWORKING COMP09022 ICMPv6 Prepared by B00270675 13-03- 2015 WORD COUNT (0000) TABLE OF CONTENTS TITLE PAGE……………………………………………... 1 TABLE OF CONTENTS………………………………….. 2 INTRODUCTION TO THE REPORT……………………. 3 TABLE OF FEATURES.......................................................4
After compression, the structure data, audio and video must be multiplexed. A number of compressed TV signals are combined by a multiplexer and put unto a shared transition medium. This is done by one of the two possible kinds of multiplexers that result in either a transport or a program stream, which is suited for secure transmission paths since it can contain large amounts of information. In addition multiplexing can be done using various methods. Time division multiplexing allocates a distinct time interval for each channel in a set; with the help of synchronization and a fixed interval order the channels take turns using the common line.
Roberts, Richard M. "Network Secrurity." Networking Fundamentals. 2nd ed. Tinley Park, IL: Goodheart-Willcox, 2005. 599-639. Print.
ADC Telecommunications (ADCT) is a communication equipment manufacturer located in Minneapolis, Minnesota, USA. Since 1952, the company has successfully weathered the tumultuous transformation process of technology. Today, ADC Telecommunications exclusively focuses on manufacturing computer-networking equipment. Increasing demand for fiber optic transmission systems like asynchronous transfer mode (ATM), synchronous optical networks (SONET) and most wireless communications systems, provide significant opportunities for ADCT. The company currently focuses on enabling communications service providers to deliver high-speed services to residential and commercial customers. The following is an annual analysis of ADCT's financial ratios of years 1995-1999.
Last phase is data exchange. In data exchange, client and server exchanges the data by creating one or more data channels. In each channel, flow is control using window space available. There are 3 stages of the life of the channel: open channel, data transfer and close channel. One the channel is open by either of the party, data is transferred and then channel is closed by either of the party [3].
Neville, Anne. "Working to Provide a Better National Broadband Map." NTIA Blog. National Telecommunications and Information Administration, 20 Feb 2014. Web. 25 Feb. 2014. .
We can use Public Switched Telephone Network (PSTN) as an example to explain the relationship between the data rates of the inputs and output of a TDM. Hanrahan (2005) indicates that there exists the need to transmit multiple subscribers’ calls along the same transmission medium. To meet the requirement, TDM is used because TDM allows switches to create channels within a transmission stream. If an input is a standard DS0 voice signal has a data bit rate of 64 Kbit/s, TDM takes frames of the voice signals and multiplexes them into a TDM frame which runs at a higher bandwidth. In other words, if the TDM frame consists of n voice frames, the bandwidth will be n*64 Kbit/s.
ATM is geared toward high speed voice and video transmission, much like a telephone network. It uses a cell-switching and multiplexing technology. The data (this refers to data, voice and video) is transferred between two points on a dedicated circuit in 53 byte cells. Each cell is the exact same size, no matter what data is being sent. The cells consist of 5 bits of header information and 48 bits of actual data. Using a smaller, consistent cell size means there's less delay between when each cell processes at the other end. Using dedicated circuits via virtual circuits ensures there is no interruption in the data transfer. This is extremely important to voice and video transmissions, because they are highly intolerant to data delays. This improves the Quality of Service (QoS) and speed of transfer, which can be between 25 Mbps to 622 Mbps.
In telecommunication signaling within a network or between networks, synchronous signals are those that occur at the same clock rate when all clocks are based on a single reference clock. Synchronous communication requires that each end of an exchange of communication respond in turn without initiating a new communication.
One of the latest advancements in wireless data. It is used in GSM (Global System for Mobile Communications) for transferring data in packets.
Asynchronous Transfer Mode (ATM) is the mostly implemented in high speed networks. ATM is the transmission system for CCITT's next-generation ISDN, Broadband ISDN (B-ISDN). B-ISDN is designed to provide subscriber communication services over a wide range of bit rates from megabits to several gigabits.
Berean¡¦s existing network infrastructure is wire line, and uses a T1. Remote users access the network through a dial-up modem pool. Berean¡¦s wire line network model severely limits the accessibility and effectiveness of the Berean network. For example, employees in Berean facilities are unable to access the network easily from meetings, the cafeteria, or anywhere other than their offices. In addition, the effectiveness of remote users is limited by the slow speed of present-day dial-up modem connections.
Over time the different means of receiving the internet have changed several years ago, a phone line would proved a slow connection to the internet, but would not be useful when storing and...
This report will describe the two forms of data communications in terms of the physical interfaces and modes of operation. It will describe the features of data communications equipment in relation to synchronous and asynchronous communication including modems, network terminating units and sending and receiving equipment.
Making a telephone call no longer should conjure up visions of operators connecting cables by hand or even of electrical signals causing relays to click into place and effect connections during dialing. The telephone system now is just a multilevel computer network with software switches in the network nodes to route calls get through much more quickly and reliably than they did in the past. A disadvantage is the potential for dramatic and widespread failures; for as has happened.