The SS7 Protocol Suite in .NET framework

Creation Data Matrix in .NET framework The SS7 Protocol Suite

The SS7 Protocol Suite
ECC200 Creation In Visual Studio .NET
Using Barcode creator for .NET framework Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
Data Matrix Scanner In .NET Framework
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET applications.
SS7 is not a single protocol per se; rather, it is a suite of protocols operating in concert In the same way that the Transmission Control Protocol (TCP)
Bar Code Creation In VS .NET
Using Barcode creator for .NET framework Control to generate, create barcode image in .NET framework applications.
Recognize Bar Code In .NET Framework
Using Barcode decoder for .NET Control to read, scan read, scan image in Visual Studio .NET 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
Data Matrix Creator In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create DataMatrix image in .NET framework applications.
Encode ECC200 In .NET
Using Barcode generation for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
VoIP and SS7
Generate Data Matrix ECC200 In VB.NET
Using Barcode drawer for VS .NET Control to generate, create Data Matrix image in .NET framework applications.
UPCA Creation In Visual Studio .NET
Using Barcode generator for .NET framework Control to generate, create UPC-A Supplement 2 image in Visual Studio .NET applications.
7
Generating USS Code 128 In .NET Framework
Using Barcode drawer for .NET Control to generate, create Code 128B image in Visual Studio .NET applications.
2D Barcode Encoder In VS .NET
Using Barcode creation for Visual Studio .NET Control to generate, create 2D Barcode image in VS .NET applications.
or the User Datagram Protocol (UDP) use the services of the IP in a stack arrangement, SS7 also defines a stack that has certain similarities with the Open Systems Interconnection (OSI) seven-layer model Figure 7-2 shows the SS7 stack
Drawing Code 3 Of 9 In .NET
Using Barcode creation for .NET Control to generate, create Code39 image in Visual Studio .NET applications.
Creating USS 93 In VS .NET
Using Barcode creator for VS .NET Control to generate, create ANSI/AIM Code 93 image in VS .NET applications.
The Message Transfer Part (MTP)
Data Matrix Scanner In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Generating UCC.EAN - 128 In .NET
Using Barcode printer for Reporting Service Control to generate, create GS1-128 image in Reporting Service applications.
The three lower levels of the SS7 stack comprise the Message Transfer Part (MTP) This is the part of the protocol responsible for getting a particular message from the source to the destination Level 1 maps closely to layer 1 of the Open System Interconnection (OSI) layers Level 1 handles the issues related to the signals on the physical links between one signaling node and another These links are known as signaling links and typically operate at 56 Kbps or 64 Kbps1 At a node that supports SS7, the physical termination of a signaling link is known as a signaling terminal MTP level 2 (MTP2) deals with the transfer of messages on a given link from one node to another Signaling messages from higher-layer protocols are passed down the stack to MTP2, which packages them for transmission on a given signaling link and takes care of getting the message across that link As well as providing functions for passing messages on behalf of MTP users, MTP2 also has some messages of its own, such as the Link Status Signal Unit (LSSU) and the Fill-In Signal Unit (FISU) The LSSU is used between two ends of a link to ensure alignment and correct link functioning, and FISUs are sent when nothing else can be sent The FISU can also carry acknowledgments of received messages
Bar Code Reader In VS .NET
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in .NET applications.
Decode Code 39 In .NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
Figure 7-2 The SS7 protocol stack
Encode 1D Barcode In Visual Basic .NET
Using Barcode creator for .NET framework Control to generate, create Linear image in Visual Studio .NET applications.
Code 128 Creator In C#.NET
Using Barcode creation for .NET framework Control to generate, create Code 128B image in Visual Studio .NET applications.
Application Part Transaction Capabilities Application Part (TCAP) ISDN User Part (ISUP)
Code-39 Recognizer In C#.NET
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET applications.
Barcode Generation In Visual Basic .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create bar code image in VS .NET applications.
Signaling Connection Control Part (SCCP) MTP Level 3 Message Transfer Part (MTP) MTP Level 2 MTP Level 1
This statement applies only to narrowband SS7 links High-speed links also operate over 15 Mbps or 2 Mbps interfaces High-speed links operate over Asynchronous Transfer Mode (ATM)
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
VoIP and SS7
VoIP and SS7
MTP level 3 (MTP3) deals with the management of messaging on the signaling network as a whole For a message destined for a particular signaling destination, many different paths could be taken from the source to the destination These paths could include a direct signaling link if one exists or a path via a number of different intermediate nodes, known as signal transfer points (STPs) MTP3 takes care of determining which outgoing link should be used for a particular message Therefore, MTP3 includes functions for the mapping of signaling destinations to various signaling link sets MTP3 manages load-sharing across different signaling links and also handles the rerouting of signaling in the case of link failure, congestion, or the failure of another node in the signaling network In order to help manage the overall signaling network, MTP3 includes a complete signaling network management protocol for ensuring the proper operation of the SS7 network Furthermore, MTP3 provides a number of services to the protocol layer above it These services involve the transfer of messages to and from the upper layer, indicating (for example) the availability or unavailability of a particular destination and signaling network status (such as congestion) These services are provided through the primitives MTP-Transfer request, MTP-Transfer indication, MTP-Pause indication, MTP-Resume indication, and MTP-Status indication
ISDN User Part (ISUP) and Signaling Connection Control Part (SCCP)
Above MTP, two main alternatives exist: the ISDN User Part (ISUP) and the Signaling Connection Control Part (SCCP)2 Let s deal with ISUP first Strictly speaking, ISUP is a signaling protocol used to provide services to Integrated Services Digital Network (ISDN) applications In reality, ISUP is most often used as the protocol for setting up and tearing down phone calls between switches and is the most commonly used of the SS7 applications Examples of ISUP messages include call setup messages such as the Initial Address message (IAM) that is used to initiate a call between two switches, the Answer message (ANM) that is used indicate that a call has been accepted by the called user, and the Release message (REL) that is used to
Other alternatives exist, most notably the Telephony User Part (TUP) This can be considered a simpler version of ISUP Numerous national variants of TUP are available
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.