The research paper seminar topics for cse 2011 Asynchronous Transfer Mode (ATM) Switching explains the functionality of ATM- Asynchronous Transfer Mode Switching. The research paper defines ATM. It suggests that ATM does not stand for automatic teller machine. In the telecommunication, it stands for Asynchronous Transfer Mode, in which data is sent asynchronously. This mode is another fast packet switching mode. Asynchronous transfer mode (ATM) is a technology that has his its history in the development of broadband ISDN in the 1970s and 980s. Technically, ATM can be viewed as an evolution of pocket switching. The paper describes pocket switching in detail. ATM is also a set of international interface and signaling standards defined by the International Telecommunication Union- Telecommunications (ITU-T) Standards Sector (formerly the CCITT).
The research paper talks in depth the various functionalities offered by ATM. ATM provides a way of multiplexing many sources of data onto a common cells stream. Regardless of speed of the inputs. This greatly improves flexibility, enabling provision of bandwidth on demand. ATM is a cell-switching and multiplexing technology that combines the benefits of circuit switching (guaranteed capacity and constant transmission delay) with those of packet switching (flexibility and efficiency for intermittent traffic). It provides scalable bandwidth from a few megabits per second (Mbps) to many gigabits per second (Gbps). Because of its asynchronous nature, ATM is more efficient than synchronous technologies, such as time-division multiplexing (TDM).
Three types of ATM services exist: permanent virtual circuits (PVC), switched virtual circuits (SVC), and connectionless service (which is similar to SMDS). ATM supports two types of connections: point-to-point and point-to-multipoint.
- *High performance via hardware switching
- Dynamic bandwidth for heavy traffic
- *Class- of –service support for media
- Scalability in speed and network size
- Common LAN / WAN architecture
- Opportunity for simplification via VC architecture
- International standard compliance
The research paper concludes on a note that ATM is a technology that can handle all types of traffic ( voice, video and data) multiplexed on the same network . In an ATM network band width can be reassigned in real time to different traffic based on demand. ATM is the only technology common to all environments from LAN to GAN .
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