Tekelec EAGLE 5 Manuale utente

Tekelec EAGLE® 5

Integrated Signaling System

SIGTRAN User Guide

910-5346-001 Revision A

September 2008

Printed in U.S.A.

Notice

Information in this documentation is subject to change without notice. Unauthorized use, copying, or translation of this

documentation can result in civil or criminal penalties.

Any export of Tekelec products is subject to the export controls of the United States and the other countries where Tekelec has

operations.

No part of this documentation may be reproduced, translated, or transmitted in any form or by any means, electronic or

mechanical, including photocopying or recording, for any purpose without the express written permission of an authorized

representative of Tekelec.

Other product names used herein are for identification purposes only, and may be trademarks of their respective companies.

RoHS 5/6 - As of July 1, 2006, all products that comprise new installations shipped to European Union member countries will

comply with the EU Directive 2002/95/EC "RoHS" (Restriction of Hazardous Substances). The exemption for lead-based

solder described in the Annex will be exercised. RoHS 5/6 compliant components will have unique part numbers as reflected

in the associated hardware and installation manuals.

WEEE - All products shipped to European Union member countries comply with the EU Directive 2002/96/EC, Waste

Electronic and Electrical Equipment. All components that are WEEE compliant will be appropriately marked. For more

information regarding Tekelec's WEEE program, contact your sales representative.

Trademarks

The Tekelec logo, EAGLE, G-Flex, G-Port, IP7, IP7 Edge, and IP7 Secure Gateway are registered trademarks of Tekelec.

TekServer, A-Port, and V-FLEX are trademarks of Tekelec. All other trademarks are the property of their respective owners.

Patents

This product is covered by one or more of the following U.S. and foreign patents:

U.S. Patent Numbers:

5,732,213; 5,953,404; 6,115,746; 6,167,129; 6,324,183; 6,327,350; 6,456,845; 6,606,379; 6,639,981; 6,647,113; 6,662,017;

6,735,441; 6,745,041; 6,765,990; 6,795,546; 6,819,932; 6,836,477; 6,839,423; 6,885,872; 6,901,262; 6,914,973; 6,940,866;

6,944,184; 6,954,526;6,954,794; 6,959,076; 6,965,592; 6,967,956; 6,968,048; 6,970,542; 6,987,781; 6,987,849; 6,990,089;

6,990,347; 6,993,038; 7,002,988; 7,020,707; 7,031,340; 7,035,239; 7,035,387; 7,043,000; 7,043,001; 7,043,002; 7,046,667;

7,050,456; 7,050,562; 7,054,422; 7,068,773; 7,072,678; 7,075,331; 7,079,524; 7,088,728; 7,092,505; 7,108,468; 7,110,780;

7,113,581; 7,113,781; 7,117,411; 7,123,710; 7,127,057; 7,133,420; 7,136,477; 7,139,388; 7,145,875; 7,146,181; 7,155,206;

7,155,243; 7,155,505; 7,155,512; 7,181,194; 7,190,702; 7,190,772; 7,190,959; 7,197,036; 7,206,394; 7,215,748; 7,219,264;

7,222,192; 7,227,927; 7,231,024; 7,242,695; 7,254,391; 7,260,086; 7,260,207; 7,283,969; 7,286,516; 7,286,647; 7,286,839;

7,295,579; 7,299,050; 7,301,910; 7,304,957; 7,318,091; 7,319,857; 7,327,670

Foreign Patent Numbers:

EP1062792; EP1308054; EP1247378; EP1303994; EP1252788; EP1161819; EP1177660; EP1169829; EP1135905;

EP1364520; EP1192758; EP1240772; EP1173969; CA2352246

Ordering Information

Your Tekelec Sales Representative can provide you with information about how to order additional discs.

Table of Contents

Chapter 1. Introduction ..................................................................................................... 1-1

About this manual ....................................................................................................................... 1-1

Audience ..................................................................................................................................... 1-2

Updates for this Release ............................................................................................................. 1-2

Manual organization ................................................................................................................... 1-2

Manual conventions .................................................................................................................... 1-3

Documentation Admonishments ................................................................................................ 1-3

Customer Care Center ................................................................................................................ 1-4

Emergency Response .................................................................................................................. 1-4

Related Publications ................................................................................................................... 1-5

Documentation Availability, Packaging, and Updates ............................................................... 1-5

Locate Product Documentation on the Customer Support Site .................................................. 1-6

Chapter 2. SS7-over-IP networks ..................................................................................... 2-1

SS7-over-IP networks overview ................................................................................................. 2-1

SS7 limitations ............................................................................................................................ 2-2

Role of SIGTRAN ...................................................................................................................... 2-2

SCTP (Stream Control Transmission Protocol) .................................................................. 2-3

M2PA (MTP2 User Peer-to-Peer Adaptation Layer) protocol ........................................... 2-4

M3UA (MTP Level 3 User Adaptation Layer) protocol ..................................................... 2-5

SUA (SCCP User Adaptation) protocol .............................................................................. 2-6

SS7-over-IP signaling transport .................................................................................................. 2-6

From SS7 message to IP packet .......................................................................................... 2-7

Communication inside the Wide Area Network (WAN) .................................................... 2-7

Reasons to transition to an SS7-over-IP SIGTRAN network ..................................................... 2-8

Cost effectiveness ................................................................................................................ 2-8

Increased capacity ............................................................................................................... 2-9

Integration ........................................................................................................................... 2-9

Type of network change ........................................................................................................... 2-10

Dedicated network versus converged IP networkt ............................................................ 2-10

Replacement versus expansion .......................................................................................... 2-10

Diversity ............................................................................................................................ 2-11

When to transition to an SS7-over-IP SIGTRAN network ...................................................... 2-11

Chapter 3. Tekelec solutions ............................................................................................. 3-1

Overview .................................................................................................................................... 3-1

EAGLE 5 ISS ............................................................................................................................. 3-1

IPLIMx, IPGWx and IPSG applications ............................................................................. 3-2

Tekelec Integrated Application Solutions (IAS) ........................................................................ 3-3

910-5346-001 Revision A, September 2008 i

Integrated Message Feeder (IMF) .............................................................................................. 3-4

Chapter 4. Transition planning ........................................................................................ 4-1

Transition guidelines .................................................................................................................. 4-1

Resolve high-level network design ..................................................................................... 4-1

Collect network information ............................................................................................... 4-2

Analyze data ........................................................................................................................ 4-4

Prepare configurations ......................................................................................................... 4-4

Implement and test .............................................................................................................. 4-4

Refine timers and parameters .............................................................................................. 4-5

Chapter 5. Dimensioning ................................................................................................... 5-1

About bandwidth, throughput, transaction units, and TPS ......................................................... 5-1

Transactions versus transaction units and TPS ................................................................... 5-2

Scalability ................................................................................................................................... 5-2

Link equivalency ................................................................................................................. 5-2

Hardware and software requirements .................................................................................. 5-4

System capacity ................................................................................................................... 5-5

Achieving IP Signaling Applications’ Advertised Capacity ...................................................... 5-5

Factors affecting advertised capacity .................................................................................. 5-6

Base transaction unit ........................................................................................................... 5-6

Adjusted transaction unit ..................................................................................................... 5-8

How to calculate transaction units per second (TPS) .......................................................... 5-8

Functionality of configurable SCTP buffer sizes per association ..................................... 5-10

System constraints affecting total IP Signaling capacity .................................................. 5-11

SIGTRAN engineering guidelines ............................................................................................ 5-13

Calculate the number of cards required ............................................................................. 5-15

IPGWx congestion management options ................................................................................. 5-16

Redundancy and link engineering ............................................................................................ 5-16

Unihoming versus multihoming ........................................................................................ 5-17

Choosing a redundancy method for M2PA links .............................................................. 5-18

Mated Signal Transfer Point redundancy .......................................................................... 5-18

IPGWx mateset .................................................................................................................. 5-19

Signaling Link Selection (SLS) routing ............................................................................ 5-20

LAN/WAN considerations ....................................................................................................... 5-20

Retransmission concept ............................................................................................................ 5-21

Retransmissions and destination status ............................................................................. 5-21

SCTP timers ...................................................................................................................... 5-21

Configure Congestion Window Minimum (CWMIN) parameter ..................................... 5-23

Chapter 6. Implementation ............................................................................................... 6-1

Hardware requirements ............................................................................................................... 6-1

EAGLE 5 ISS ...................................................................................................................... 6-1

Integrated Message Feeder (IMF) ....................................................................................... 6-2

Converting non-IPSG-M2PA Linksets to IPSG-M3UA Linksets .............................................. 6-2

Converting IPGWx M3UA Application Servers to IPSG-M3UA Linksets ............................... 6-3

IPGWx to IPSG-M3UA Conversion Example 1 ................................................................. 6-3

IPGWx to IPSG-M3UA Conversion Example 2 ................................................................. 6-5

IPGWx to IPSG-M3UA Conversion Example 2A .............................................................. 6-7

Table of Contents SIGTRAN User Guide

ii 910-5346-001 Revision A, September 2008

Configuration .............................................................................................................................. 6-9

Configure the IPSG application .......................................................................................... 6-9

Configure the IPSG Application on the Same Card .......................................................... 6-10

Configure the IPLIMx application .................................................................................... 6-11

Configure the IPGWx application ..................................................................................... 6-12

Refine timers and parameters ................................................................................................... 6-15

Define RTIMES association retransmits ........................................................................... 6-15

Define RTO parameter ...................................................................................................... 6-15

Measure jitter ..................................................................................................................... 6-15

Refine RTO parameter ...................................................................................................... 6-15

System verification ................................................................................................................... 6-16

Verify network connectivity .............................................................................................. 6-16

Verify IPLIMx configuration ............................................................................................ 6-17

Verify IPGWx configuration ............................................................................................ 6-18

Chapter 7. Troubleshooting .............................................................................................. 7-1

General troubleshooting ............................................................................................................. 7-1

Verify UIMs and UAMs ............................................................................................................. 7-2

Is the card configured correctly? ................................................................................................ 7-2

Connection does not become established ................................................................................... 7-3

Connection bounces and is unstable ........................................................................................... 7-3

AS/PC in route key does not become available or ACTIVE (IPGWx only) .............................. 7-3

IP destination is not informed of SS7 destination status changes; network management is

not working correctly (IPGWx only) .................................................................................. 7-4

Traffic not arriving at IP destination or traffic is lost ................................................................. 7-4

Are connection(s) congesting? ................................................................................................... 7-4

Traffic not load-balanced properly ............................................................................................. 7-5

Link level events ......................................................................................................................... 7-5

Association ................................................................................................................................. 7-5

Appendix A. Additional Deployment Scenarios ............................................................. A-1

IPLIM/M2PA deployment scenarios ......................................................................................... A-1

Simple M2PA A-link configuration (3,000 TPS) ............................................................... A-1

High-throughput M2PA A-link configuration (30,000 TPS) ............................................. A-2

High-throughput M2PA C-link configuration (30,000 TPS) ............................................. A-3

IPLIM/M2PA deployment scenarios ......................................................................................... A-3

Simple M2PA A-link configuration (3,000 TPS) ............................................................... A-3

High-throughput M2PA A-link configuration (30,000 TPS) ............................................. A-4

High-throughput M2PA C-link configuration (30,000 TPS) ............................................. A-5

IPGW/M3UA deployment scenarios ......................................................................................... A-5

Active/standby configurations ............................................................................................ A-5

Two-pair IPGWx ................................................................................................................ A-6

Four IPGWx pairs (two SS7IPW pairs and two IPGWI pairs) .......................................... A-7

Eight IPGWx cards, two mates, three linksets ................................................................... A-8

Four IPGWx cards, one linkset for end office .................................................................... A-9

Unsupported Scenarios ....................................................................................................... A-9

Appendix B. References .................................................................................................... B-1

Tekelec internal references ........................................................................................................ B-1

SIGTRAN User Guide Table of Contents

910-5346-001 Revision A, September 2008 iii

External References ................................................................................................................... B-1

Glossary .................................................................................................................. Glossary-1

Index ............................................................................................................................. Index-1

Table of Contents SIGTRAN User Guide

iv 910-5346-001 Revision A, September 2008

List of Figures

Figure 1-1. Transition from SS7 to IMS............................................................................... 1-2

Figure 2-1. SIGTRAN protocols used by Tekelec................................................................. 2-3

Figure 2-2. M2PA network.................................................................................................... 2-5

Figure 2-3. SS7-over-IP network........................................................................................... 2-6

Figure 2-4. Change from SS7 message to IP packet.............................................................. 2-7

Figure 2-5. Communication inside the WAN........................................................................ 2-8

Figure 2-6. Typical EAGLE 5 ISS SS7-over-IP deployment.............................................. 2-10

Figure 5-1. SIGTRAN: Every IP link at 0.4 erlang.............................................................. 5-14

Figure 5-2. SIGTRAN: Failover at 0.8 erlang...................................................................... 5-14

Figure 5-3. SIGTRAN: Every link at 0.4 erlang and 800 MSU/s........................................ 5-14

Figure 5-4. EAGLE 5 ISS: Failover at 0.8 erlang and 1600 MSU/s.................................... 5-15

Figure 5-5. Unihoming versus multihoming........................................................................ 5-18

Figure 5-6. Mated Signal Transfer Point redundancy.......................................................... 5-19

Figure 6-1. PGWx to IPSG-M3UA Conversion Strategy Example 1.................................... 6-4

Figure 6-2. IPGWx to IPSG-M3UA Conversion Strategy Example 2................................... 6-6

Figure 6-3. IPGWx to IPSG-M3UA Conversion Strategy Example 2A .............................. 6-8

Figure A-1. SG connected to IP SEP via two M2PA links................................................... A-2

Figure A-2. SG connected to IP SEP via eleven M2PA links............................................... A-2

Figure A-3. SG connected to IP SEP via eleven M2PA links............................................... A-3

Figure A-4. SG connected to IP SEP via two M2PA links................................................... A-4

Figure A-5. SG connected to IP SEP via eleven M2PA links............................................... A-4

Figure A-6. SG connected to IP SEP via eleven M2PA links............................................... A-5

Figure A-7. IPGWx active/standby configuration................................................................. A-5

Figure A-8. Two-Pair IPGWx for Maximum TPS................................................................ A-6

Figure A-9. Four IPGWx pairs (two SS7IPW pairs and two IPGWI pairs).......................... A-7

Figure A-10. Eight IPGWx cards, two mates, three linksets................................................. A-8

Figure A-11. Four IPGWx cards, one linkset for end office................................................. A-9

Figure A-12. Unsupported deployment scenario: Combined linksets (1)........................... A-10

Figure A-13. Unsupported deployment scenario: Combined linksets (2)........................... A-10

910-5346-001 Revision A, September 2008 v

List of Figures SIGTRAN User Guide

vi 910-5346-001 Revision A, September 2008

List of Tables

Table 1-1. Admonishments..................................................................................................... 1-3

Table 4-1. M2PA and M3UA configuration parameter data.................................................. 4-3

Table 5-1. EAGLE Link Equivalency for IPLIMx/IPGWx................................................... 5-2

Table 5-2. EAGLE Link Equivalency for IPSG..................................................................... 5-3

Table 5-3. Card limits by application per node...................................................................... 5-5

Table 5-4. Base Advertised Capacity..................................................................................... 5-6

Table 5-5. Base transaction unit cost per MSU SIF size........................................................ 5-7

Table 5-6. Additional IPLIMx/IPGWx Transaction Units for Advanced

Configurations...................................................................................................... 5-8

Table 5-7. IPSG Additional Transaction Units for Advanced Configurations....................... 5-8

Table 5-8. Calculating TPS.................................................................................................... 5-9

Table 5-9. SCTP Buffer Space per Connection, Card and Application............................... 5-10

Table 5-10. IPLIMx and IPGWx connectivity data............................................................. 5-11

Table 5-11. IPSG Connectivity Data.................................................................................... 5-12

Table 5-12. CTP Configuration Data Descriptions for Tekelec EAGLE 5 ISS................... 5-22

Table 6-1. EAGLE 5 ISS IP signaling maximum capacities by card and application........... 6-2

910-5346-001 Revision A, September 2008 vii

List of Tables SIGTRAN User Guide

viii 910-5346-001 Revision A, September 2008

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