vb.net qr code SONET Advantages: Mid-Span Meet in Software

Painting Code-39 in Software SONET Advantages: Mid-Span Meet

SONET Advantages: Mid-Span Meet
Code39 Reader In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Creating Code 3/9 In None
Using Barcode generation for Software Control to generate, create ANSI/AIM Code 39 image in Software applications.
Because of the monopoly nature of early networks, interoperability was a laughable dream. Following the divestiture of AT&T, however, and the realization of Equal Access, the need for interoperability standards became a matter of some priority. Driven largely by MCI, the newly
Code-39 Reader In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Paint Code 39 Full ASCII In Visual C#
Using Barcode maker for .NET framework Control to generate, create Code-39 image in VS .NET applications.
Figure 3-50 A much simplified adddrop process!
Generating Code 39 Extended In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create Code 39 Extended image in ASP.NET applications.
Creating Code 39 In VS .NET
Using Barcode drawer for VS .NET Control to generate, create Code 39 image in .NET framework applications.
DS-3
Code 39 Extended Maker In VB.NET
Using Barcode drawer for .NET Control to generate, create Code 3/9 image in VS .NET applications.
GS1 - 13 Generator In None
Using Barcode creator for Software Control to generate, create EAN13 image in Software applications.
SONET ADM
Code 3/9 Generator In None
Using Barcode printer for Software Control to generate, create USS Code 39 image in Software applications.
Draw Code 128 Code Set B In None
Using Barcode creator for Software Control to generate, create ANSI/AIM Code 128 image in Software applications.
DS-3
Barcode Creator In None
Using Barcode generation for Software Control to generate, create barcode image in Software applications.
Creating Barcode In None
Using Barcode printer for Software Control to generate, create barcode image in Software applications.
DS-1
Printing ISSN - 13 In None
Using Barcode generator for Software Control to generate, create ISSN - 13 image in Software applications.
Barcode Maker In Java
Using Barcode creator for Java Control to generate, create bar code image in Java applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
Make Data Matrix 2d Barcode In Objective-C
Using Barcode creation for iPhone Control to generate, create Data Matrix 2d barcode image in iPhone applications.
Creating Barcode In VB.NET
Using Barcode maker for VS .NET Control to generate, create bar code image in VS .NET applications.
Telephony
Make GS1 DataBar Expanded In Java
Using Barcode drawer for Java Control to generate, create GS1 DataBar image in Java applications.
Code 128 Code Set B Creation In None
Using Barcode generation for Office Word Control to generate, create Code 128 Code Set C image in Office Word applications.
3
Paint Data Matrix 2d Barcode In Java
Using Barcode printer for Java Control to generate, create ECC200 image in Java applications.
Barcode Generation In Objective-C
Using Barcode generation for iPhone Control to generate, create bar code image in iPhone applications.
competitive telecommunications industry fought hard for standards that would allow different vendors optical multiplexing equipment to interoperate. This interoperability came to be known as mid-span meet, SONET s greatest contribution to the evolving industry.
Improved OAM&P
Improved OAM&P is without question one of the most important contributions that SONET brings to the networking table. Element and Network monitoring, management and maintenance have always been something of a catch-as-catch-can effort because of the complexity and diversity of elements in a typical service provider s network. SONET overhead includes error-checking capability, bytes for network survivability, and a diverse set of clearly defined management messages.
Multipoint Circuit Support
When SONET was first deployed in the network, the bulk of the traffic it carried derived from point-to-point circuits such as T1 and DS3 facilities. With SONET came the ability to hub the traffic, a process that combines the best of cross-connection and multiplexing to perform a capability known as groom and fill. This means that aggregated traffic from multiple sources can be transported to a hub, managed as individual components and redirected out any of several outbound paths without having to completely disassemble the aggregate payload. Prior to SONET, this process required a pair of back-to-back multiplexers, sometimes called an M13 (for multiplexer that interfaces between DS1 and DS3 ). This capability, combined with SONET s discreet and highly capable management features, results in a wonderfully manageable system of network bandwidth control.
Unintrusive Monitoring
SONET overhead bytes are embedded in the frame structure, meaning that they are universally transported alongside the customer s payload. Thus, tight and granular control over the entire network can be realized, leading to more efficient network management and the ability to deploy services on an as-needed basis.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
Telephony
Telephony
New Services
SONET bandwidth is imminently scalable, meaning that the ability to provision additional bandwidth for customers that require it on an as-needed basis becomes real. As applications evolve to incorporate more and more multimedia content and, therefore, to require greater volumes of bandwidth, SONET offers it by the bucket load. Already, interfaces between SONET and Gigabit Ethernet are being written; interfaces to ATM and other high-speed switching architectures have been in existence for some time.
SONET Evolution
SONET was initially designed to provide multiplexed point-to-point transport. However, as its capabilities became better understood and networks became mission-critical, its deployment became more innovative, and soon it was deployed in ring architectures as shown in Figure 3-51. These rings represent one of the most commonly deployed network topologies. For the moment, however, let s examine a point-to-point deployment. As it turns out, rings don t differ all that much.
Figure 3-51 Ring architectures used in SONET
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
Telephony
3
If we consider the structure and function of the typical point-to-point circuit, we find a variety of devices and functional regions as shown in Figure 3-52. The components include end devices, multiplexers in this case, which provide the point of entry for traffic originating in the customer s equipment and seeking transport across the network; a fullduplex circuit, which provides simultaneous two-way transmission between the network components; a series of repeaters or regenerators, responsible for periodically reframing and regenerating the digital signal; and one or more intermediate multiplexers, which serve as nothing more than pass-through devices. When non-SONET traffic is transmitted into a SONET network, it is packaged for transport through a step-by-step, quasi-hierarchical process that attempts to make reasonably good use of the available network bandwidth and ensure that receiving devices can interpret the data when it arrives. The intermediate devices including multiplexers and repeaters also play a role in guaranteeing traffic integrity. To that end, the SONET standards divide the network into three regions : path, line, and section. To understand the differences between the three, let s follow a typical transmission of a DS3, probably carrying 28 T1s, from its origination point to the destination. When the DS3 first enters the network, the ingress SONET multiplexer packages it by wrapping it in a collection of additional information, called path overhead, which is unique to the transported data. For example, it attaches information that identifies the original source of the DS3, so that it can be traced in the event of network transmission problems; a bit-error control byte; information about how the DS3 is actually mapped into the payload transport area (and unique to the payload type); an area for network performance and management information;
Copyright © OnBarcode.com . All rights reserved.