create qr code with vb.net ATM Testing 264 Wide Area Networks in Software

Generator Code 128A in Software ATM Testing 264 Wide Area Networks

ATM Testing 264 Wide Area Networks
Drawing USS Code 128 In None
Using Barcode drawer for Software Control to generate, create USS Code 128 image in Software applications.
USS Code 128 Recognizer In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Internet from a technology designed for best-effort nonprioritized transfer, ATM, having been developed specifically to handle this, may well return to favor
USS Code 128 Creation In C#
Using Barcode creation for .NET framework Control to generate, create Code 128 image in .NET applications.
USS Code 128 Drawer In .NET
Using Barcode creation for ASP.NET Control to generate, create USS Code 128 image in ASP.NET applications.
LAN-over-ATM tester requirements The deployment and operation of LAN over ATM services will require a variety of test techniques encompassing protocol verification and performance monitoring It is important to be able to monitor the entire packet transfer process through the various stages of the communication This requires monitor ports not only on the LAN itself, but also in both directions of ATM cell flow between the various end station clients and network servers Correlation will be required across the various monitor ports to decode and analyze the LAN data, the control protocols (including address resolution), and the signaling and data encapsulation for conformance to the appropriate standards Emulation testing techniques are useful for verifying these functions during commissioning Performance testing also is required as part of this process to analyze the behavior of servers, bridges, and routers under stress conditions, and to ensure that faulthandling procedures behave as required Additionally, the impact of ATM on the end station applications must be determined; for example, it is necessary to understand the effect of cell loss or CDV on transfer performance and network degradation with retransmissions Continuity checks, (using pings ) are needed; it is vital that data analysis and presentation be effective, so that users and support personnel can understand the real problems through the complexity of the technologies 1134 ATM voice and video services
Generate ANSI/AIM Code 128 In VS .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create USS Code 128 image in .NET applications.
Code 128C Maker In VB.NET
Using Barcode creation for .NET framework Control to generate, create Code 128 Code Set C image in Visual Studio .NET applications.
Video and audio services will appear both in corporate desktop and residential/consumer environments Applications will range from high-bandwidth use (such as medical imaging), to broadcast video and desktop video conferencing, where compression will allow lower bandwidths to be used The quality demands will vary widely, with low cost being a vital element of any mass-market application Despite the development of Circuit Emulation standards, existing voice services are not widely seen as a prime candidate for ATM initially, although audio services will appear as part of such applications as video conferencing and networked multimedia
Making Data Matrix In None
Using Barcode creation for Software Control to generate, create DataMatrix image in Software applications.
Barcode Generator In None
Using Barcode maker for Software Control to generate, create bar code image in Software applications.
Voice over ATM Circuit emulation is the name given to the transport of traditional TDM circuits across an ATM network in such a way that the ATM network appears to the TDM circuits as just another CBR link This service is the simplest way to transfer voice circuits across an ATM network; because the data is real-time, however, delays must be kept to a minimum Of particular importance is controlling cell delay variation (CDV) or cell jitter By the nature of ATM s multiplexing and switching, ATM networks introduce variable delay into a cell stream Because circuit emulation traffic is CBR, it will accumulate CDV as it transfers across the network; this must be removed before it continues back onto the CBR TDM link Buffering at the output of the ATM network could be used, but this adds to the absolute delays already experienced by the cells It is important to make sure these parameters are controlled appropriately in the network, especially as the network grows and its utilization increases (Figure 1115)
Make GS1-128 In None
Using Barcode creation for Software Control to generate, create UCC.EAN - 128 image in Software applications.
UPC - 13 Drawer In None
Using Barcode printer for Software Control to generate, create GTIN - 13 image in Software applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Code 128 Encoder In None
Using Barcode creator for Software Control to generate, create ANSI/AIM Code 128 image in Software applications.
UCC - 12 Generator In None
Using Barcode creator for Software Control to generate, create UPC-A Supplement 5 image in Software applications.
ATM Testing ATM Testing: Deployment of ATM-Based Services 265
EAN8 Encoder In None
Using Barcode encoder for Software Control to generate, create EAN 8 image in Software applications.
UPCA Scanner In VB.NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET applications.
Network A
ANSI/AIM Code 39 Encoder In C#
Using Barcode maker for VS .NET Control to generate, create Code 3 of 9 image in .NET applications.
Paint Code 128 In Visual C#.NET
Using Barcode drawer for .NET framework Control to generate, create Code128 image in .NET applications.
CBR CPE PDH interface
Paint Code 3/9 In None
Using Barcode drawer for Word Control to generate, create Code 39 Full ASCII image in Office Word applications.
UPC Symbol Recognizer In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Network B
Code128 Creator In None
Using Barcode encoder for Font Control to generate, create Code 128 Code Set A image in Font applications.
UCC - 12 Creator In Visual C#
Using Barcode drawer for Visual Studio .NET Control to generate, create UPC A image in .NET applications.
I W F
PDH interface
CBR CPE
I W F
CBR CPE
PDH network
I W F
ATM network
ATM UNI or B-ICI
ATM network
I W F
PDH network
CBR CPE
CBR User (eg DS1, E1,nx64)
PDH/CS Interworking
PDH/CS Interworking
PDH PHY
CS SAR ATM ATM PHY ATM PHY PHY
CS SAR ATM PHY
PDH PHY
CBR User (eg DS1, E1,nx64)
Figure 1115 Circuit emulation service
Circuit emulation transfers voice services over ATM by reserving the full TDM link bandwidth as a high-priority CBR connection Other variable techniques have been developed that compress the voice signals into a VBR connection and allow better utilization of the network As this technology matures, and ATM bandwidth becomes more fully utilized, circuit emulation might turn out to be no longer required In both cases, testing procedures must focus on ensuring that the delay and jitter requirements of the TDM signals are within required tolerances following transfer over the ATM network In particular, it will be important to determine the effect of congestion in the ATM network on these values and the effectiveness of the traffic management functions designed to handle them
MPEG2 video over ATM The Motion Picture Experts Group (MPEG) is responsible for a set of specifications for the transfer of audio and video over digital transport systems MPEG1 was developed for the transfer of VCR-quality signals; MPEG2 addresses broadcast-quality signals The MPEG specifications include compression schemes, with the coded signal bandwidths giving the required quality for MPEG1 at about 15 Mbps, and for MPEG2 at about 6 Mbps MPEG2 is seen as the technology suitable for video-on-demand (VoD) applications With ATM being an obvious transport candidate, the ATM Forum (among others) has been working on the transfer of MPEG2 over ATM (Figure 1116) In essence, MPEG2 compresses and then packetizes the encoded video and audio signals for transport over a network At the decoder, it synchronizes the transport stream and decodes the signals Transport-stream packets are a fixed 188 bytes long and can include timing information for use in the synchronization process A key element of the MPEG design is that a constant delay is expected between the encoder and decoder ATM is highly prone to CDV (Cell Delay Variation), which means that successful implementation of MPEG2 over ATM must address this issue Control of
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Copyright © OnBarcode.com . All rights reserved.