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SIGTRAN User Guide 910-6007-001 Revision a September 2010

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SIGTRAN User Guide 910-6007-001 Revision a September 2010 Tekelec EAGLE® 5 SIGTRAN User Guide 910-6007-001 Revision A September 2010 Copyright 2010 Tekelec. All Rights Reserved. Printed in USA. Legal Information can be accessed from the Main Menu of the optical disc or on the Tekelec Customer Support web site in the Legal Information folder of the Product Support tab. Table of Contents Chapter 1: Introduction.......................................................................8 About this manual.....................................................................................................................9 Audience.....................................................................................................................................9 Updates for this Release...........................................................................................................9 Manual organization...............................................................................................................12 Manual conventions................................................................................................................12 Documentation Admonishments..........................................................................................13 Customer Care Center............................................................................................................13 Emergency Response..............................................................................................................15 Related Publications...............................................................................................................16 Documentation Availability, Packaging, and Updates.....................................................16 Locate Product Documentation on the Customer Support Site.......................................17 Chapter 2: SS7-over-IP Networks....................................................18 SS7-over-IP Networks Overview..........................................................................................19 SS7 limitations.........................................................................................................................19 Role of SIGTRAN....................................................................................................................20 SCTP (Stream Control Transmission Protocol).......................................................20 M2PA (MTP2 User Peer-to-Peer Adaptation Layer) Protocol..............................21 M3UA (MTP Level 3 User Adaptation Layer) Protocol........................................22 SUA (SCCP User Adaptation) Protocol...................................................................23 SS7-over-IP signaling transport............................................................................................23 From SS7 Message to IP Packet.................................................................................24 Communication inside the Wide Area Network (WAN)......................................25 Reasons to transition to an SS7-over-IP SIGTRAN network............................................26 Cost Effectiveness........................................................................................................26 Increased capacity.......................................................................................................27 Integration....................................................................................................................27 Type of Network Change.......................................................................................................28 Dedicated Network versus Converged IP Network..............................................28 Replacement versus Expansion.................................................................................28 Diversity.......................................................................................................................29 When to transition to an SS7-over-IP SIGTRAN network................................................29 910-6007-001 Revision A, September 2010 ii Chapter 3: Tekelec Solutions............................................................30 Overview..................................................................................................................................31 EAGLE 5 ISS.............................................................................................................................31 Tekelec Integrated Application Solutions (IAS).................................................................33 Integrated Message Feeder (IMF).........................................................................................33 Chapter 4: Transition Planning........................................................34 Transition guidelines..............................................................................................................35 Resolve high-level network design..........................................................................35 Collect network information.....................................................................................36 Analyze data................................................................................................................37 Prepare configurations...............................................................................................38 Implement and test.....................................................................................................38 Refine timers and parameters...................................................................................38 Chapter 5: Dimensioning..................................................................39 About bandwidth, throughput, transaction units, and TPS.............................................40 Transactions versus transaction units and TPS......................................................40 Scalability.................................................................................................................................40 Link equivalency.........................................................................................................40 Hardware and software requirements.....................................................................43 System capacity...........................................................................................................43 Achieving IP Signaling Applications’ Advertised Capacity.............................................44 Factors Affecting Advertised Capacity....................................................................44 Base transaction unit...................................................................................................45 Adjusted transaction unit...........................................................................................47 How to calculate transaction units per second (TPS)............................................49 Functionality of Configurable SCTP Buffer Sizes per Association......................51 System Constraints Affecting Total IP Signaling Capacity...................................51 SIGTRAN Engineering Guidelines.......................................................................................55 Calculate the Number of Cards Required...............................................................57 IPGWx Congestion Management Options..........................................................................58 Redundancy and Link Engineering......................................................................................58 Unihoming versus Multihoming..............................................................................59 Choosing a Redundancy Method for M2PA Links................................................60 Mated Signal Transfer Point Redundancy..............................................................60 IPGWx mateset............................................................................................................61 Signaling Link Selection (SLS) Routing...................................................................62 910-6007-001 Revision A, September 2010 iii LAN/WAN Considerations..................................................................................................62 Retransmission Concept.........................................................................................................63 Retransmissions and Destination Status..................................................................63 SCTP Timers.................................................................................................................63 Configure Congestion Window Minimum (CWMIN) Parameter.......................66 Chapter 6: Implementation...............................................................68 Hardware requirements.........................................................................................................69 EAGLE 5 ISS.................................................................................................................69 Integrated Message Feeder (IMF).............................................................................69 Converting Non-IPSG-M2PA Linksets to IPSG-M2PA Linksets.....................................70 Converting IPGWx M3UA Application Servers to IPSG-M3UA Linksets.....................70 Configuration...........................................................................................................................77 Configure the IPSG Application...............................................................................77
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