Abstract
This paper looks at Asynchronous Transfer Mode (ATM) networks and switches including the problems associated with the old existing networks and the introduction of Broadband Integrated Networks. The paper also compares ATM networks with the traditional circuit and packet switching systems as well as discussing different categories of ATM switches and buffering schemes.
Outline
Origins of ATM
Evolution to a Broadband Integrated Network
Service Characteristics
Information Rate and Burstiness
Service Examples
Transfer Modes
Extreme Transfer Modes
Asynchronous Transfer Mode (ATM)
Benefits of ATM
ATM Cell Structure
Cell Size
BISDN Protocol Stack
Transmission Delay
Header Functionality
Virtual Paths
Statistical Multiplexing
Making an ATM Call
ATM Switching
Classification of Switch Fabrics
Time Division Switch Fabrics
Shared Medium Single Bus Structure
Space Division Fabrics
Single Path Self Routing Switch
Switch Problems
Buffering

From the Paper
"Asynchronous Transfer Mode is a digital technique for high speed switching. The unit of multiplexing and switching is a cell which comprises a short fixed length information packet with a fixed length header to carry signaling information. By offering access at the cell level, information from many sources with widely differing activity patterns and transmission rates can be interleaved on a single transmission link or switched through an ATM node. As in other packet switching environments capacity is used only when it is needed."

Tags:bisdn, broadband, integrated, isdn, modes, multiplexing, packet, paths, recirculation

Abstract
This paper describes the Asynchronous Transfer Mode layers, which include the ATM Layer, AAL Convergence sub-layer, ATM Adaptation Layer or AAL, the AAL Model Segmentation and Reassembly sub-layer and the Higher Layer Protocols for control, management and application. The author points out that the ATM technology is a very detail oriented and maybe the most complex technology ever created in the current technologically driven society. The paper relates that the network-to network cell is used to define the interface between nodes throughout a network's switches or between two or more unique networks.

From the Paper
"As noted, the ATM Cell utilizes a 5-byte header for the UNI and NNI cell formats. Although the fields of these formats are similar, there is an exception for the UNI cell format which includes a 4-bit generic flow control or GFC to assist in the overall flow control for the UNI level. The exception is based on the fact that the NNI level flow control is inadvertently created through longer VPI's which permits for more virtual paths, 12 bits vs. 8 bits for UNI. Other fields for the header are the VCI which consists of 16 bits, the payload type which consists of 3 bits, the cell loss priority which is 1 bit and the header error correction of 8 bits."

Tags:layers, complex, cell, paths, payload

Abstract
This paper describes the concepts and structure of ATM and the operations involved in its interface and security.

Abstract
This paper discusses why implementing ATM networking makes sense for a mid-sized corporate enterprise. The author reviews some of the issues involved in this upgrading. The author suggests three areas potential upgrades that need to be consider.

Abstract
This paper introduces QOA and follows with describing its function. It then details the differences between ATM and MPLS, the values of MPLS QOS and ATM QOS, traffic engineering, congestion problems and levels of hierarchy. The conclusion compares two solutions for QOS: an ATM switch and an IP router and touts ATM as the preferred solution. The paper finishes by holding that MPLS QOS could replace ATM QOS, but that is not likely to happen in the near future.

From the Paper
"Simply put, multi-label switching (MPLS) brings the traffic engineering capabilities of asynchronous transfer mode (ATM) to packet-based network by tagging IP packets with "labels" that specify a route and priority (Flannaghan, 2001). MPLS unites the scalability and flexibility of routing with the performance and traffic management of layer 2 switching. MPLS can run over nearly any transport medium, including ATM and Ethernet, rather than being tied to a specific layer-2 encapsulation. Because it uses Internet protocol (IP) for addressing, it uses common routing and signaling protocols.
MPLS was not designed to replace ATM but rather to compliment it. MPLS eases complexity by mapping IP addressing and routing information directly into ATM switching tables. The MPLS label-swapping paradigm employs the same mechanism that ATM switches use to forward ATM cells. In the case of ATM-LSR, the ATM forwarding component performs the label swapping function. Label information is carried in the ATM Header.
MPLS has the ability to run over routers in addition to ATM switches, while providing the control component for IP on both the ATM switches and routers. For ATM switches PNNI, ATM ARP Server, and NHRP Server are replaced with MPLS for IP services yet the ATM control plane remains preserved (Zheng, 2001). PNNI is still used on ATM switches to provide ATM services. Therefore, an IP+ATM switch delivers both ATM for fast switching and IP protocols for IP services in a single switch.
In the past, at a specific performance level, the price of a router was usually higher than the equivalent ATM switch. With IP+ATM LSRs, the forwarding performance is determined by the capabilities of the ATM switches, whereas the functionality is comparable to a router. Moreover, IP+ATM switches may also have similar price and performance characteristics to ATM switches."

Tags:MPLS, ATM, IP, router, switch

Abstract
This paper reviews Asynchronous Transfer Mode Technology (AMT); defines ATM, how it works and how it can accommodate different forms of data. It also compares ATM technology to other communications technologies such as frame relay and ISDN.

Tags:ATM, Data

IDSN

Abstract
This paper examines how the American Disability Act (ADA) was created for the benefit of millions of Americans with disabilities, such as blindness and paralysis, and how it provides rules and guidelines that take care of and protect those who suffer from disabilities from access to social environment. It shows how one of the guidelines in ADA is to remove and eliminate problems encountered in ATM access by the disabled persons and how, in 1992, ADA guidelines were implemented for ATMs in a law that resolves the concerns of Americans with disabilities. It analyzes the effect of these guidelines on ATMs, as well as bank issues, and the proposed ATM technological changes.

From the Paper
"The proposal of the Access Board to allow speech capabilities on ATMs presents a number of issues to manufacturers of the machines and to the banks. First, the cost of implementing the proposed changes on existing machines is expensive, granting that each bank maintains a large number of ATMs. Second, ATMs has lifespan. Instead of upgrading ATMs whose lifespan is near to expire, after the effect of the revised ADA, replacement of expiring machines is a more practical option. Such will cause burden on the banks. Third, enhancement of existing machines presents difficulty to manufacturers. The flexibility of the proposed changes of supporting speech capabilities to facilitate ATM access for the visually impaired will require time, effort, and new materials to modify the machines."

Tags:blind, deaf, guidelines, social, environment

Abstract
The development of cards which can access different monetary services electronically has been the major boost to electronic commerce. Many computer users today are accessing commercial enterprises on the Internet, but millions more have indulged in a different form of electronic commerce simply by using their ATM card, debit card, or credit card in the course of daily business. The dissemination of such cards has been part of a long-term and evolving marketing strategy on the part of banks and other financial institutions to change the way people do business both with their banks and with retailers of various sorts.

From the Paper
"NEW WAYS TO PAY

INTRODUCTION
The development of cards which can access different monetary services electronically has been the major boost to electronic commerce. Many computer users today are accessing commercial enterprises on the Internet, but millions more have indulged in a different form of electronic commerce simply by using their ATM card, debit card, or credit card in the course of daily business. The dissemination of such cards has been part of a long-term and evolving marketing strategy on the part of banks and other financial institutions to change the way people do business both with their banks and with retailers of various sorts. Some believe this could one day lead to a cashless society where all commerce is conducted through the use of plastic cards with ..."

From the Paper
"Introduction

The broadband network concept came from the fact that a wide range of voice, data and video service can be simultaneously carried on the same optical system. Broadband is the provision of subscriber access targeting business and residential customers. It is regarded as an all purpose network that will provide integrated access and support a wide variety of applications in a flexible and cost-effective manner. Because of the impact that broadband has, and will continue to have, on the computing environment, the various modes which support the technology are important. This research focuses on one of these modes, asynchronous transfer, and considers its current position relative to other broadband networks, such as frame relay and SMDS. The future of ATM is also considered.
Asynchronous ..."

Abstract
For many, automated teller machines (ATMs) are simply a way of life. There were introduced nearly 20 years ago and today, many bank customers never go into a branch after opening their account. But today's ATM cards can also be used to make purchases at retail outlets and even on the World Wide Web, another innovation which was not envisioned 20 years ago. The videophone has become video conferencing, and cameras which use film may be made obsolete by cameras which use a floppy disk for recording images. Electronic pagers, once the purview of doctors and others who needed to be notified in case of emergencies, have now become commonplace and are used to summon diners to their table.

From the Paper
"Introduction
For many, automated teller machines (ATMs) are simply a way of life. There were introduced nearly 20 years ago and today, many bank customers never go into a branch after opening their account. But today's ATM cards can also be used to make purchases at retail outlets and even on the World Wide Web, another innovation which was not envisioned 20 years ago. The videophone has become video conferencing, and cameras which use film may be made obsolete by cameras which use a floppy disk for recording images. Electronic pagers, once the purview of doctors and others who needed to be notified in case of emergencies, have now become commonplace and are used to summon diners to their table. This research examines each of these technologies and considers how the impact of technology extends beyond its stated use."