DOCSLIB.ORG

Appendix a Timer Values

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Appendix a Timer Values Appendix A Timer Values A.1 MTP Level 2 Timer Values The following timer values are taken from ITU-T Q.703, Sect. 12.3: Timers. T1 (64 kbit/s) = 40–50 s Timer “aligned ready” T1 (4.8 kbit/s) = 500–600 s Timer “aligned ready” T2 = 5–150 s Timer “not aligned” T3 = 1–2 s Timer “aligned” T4n (64 kbit/s) = 7.5–9.5 s Normal proving period timer T4n (4.8 kbit/s) = 100–120 s Normal proving period timer T4e (64 kbit/s) = 400–600 ms Emergency proving period timer T4e (4.8 kbit/s) = 6–8 s Emergency proving period timer T5 = 80–120 ms Timer “sendig SIB” T6 (64 kbit/s) = 3–6 s Timer “remote congestion” T6 (4.8 kbit/s) = 8–12 s Timer “remote congestion” T7 (64 kbit/s) = 0.5–2 s Timer “excessive delay of acknowledgement” T7 (4.8 kbit/s) = 4–6 s Timer “excessive delay of acknowledgement” A.2 MTP Level 3 Timer Values The following timer values are taken from ITU-T Q.704, Sect. 16.8: Timers and timer values. T1 = 500–1200 ms Delay to avoid missequencing on changeover T2 = 700–2000 ms Waiting for changeover acknowledgement T3 = 500–1200 ms Time-controlled diversion delay to avoid missequencing on changeback T4 = 500–1200 ms Waiting for changeback acknowledgement (first attempt) T5 = 500–1200 ms Waiting for changeback acknowledgement (second attempt) 260 Appendix A Timer Values T6 = 500–1200 ms Delay to avoid message missequencing on controlled rerouting T7 = 1–2 s Waiting for signalling data link connection acknowledgement T8 = 800–1200 ms Transfer prohibited inhibition timer (transient solution) T9 Not used T10 = 30–60 s Waiting to repeat signalling route set test message1 T11 = 30–90 s Transfer restricted timer T12 = 800–1500 ms Waiting for uninhibit acknowledgement T13 = 800–1500 ms Waiting for force uninhibit T14 = 2–3 s Waiting for inhibition acknowledgement T15 = 2–3 s Waiting to start signalling route set congestion test T16 = 1.4–2 s Waiting for route set congestion status update T17 = 800–1500 ms Delay to avoid oscillation of initial alignment failure and link restart T18 Timer within a signalling point whose MTP restarts, for supervising link and linkset activation as well as the receipt of routing information. The value is implementation and network dependent T19 = 67–69 s Supervision timer during MTP restart to avoid possible poin-pong of TFP, TFR, and TRA messages T20 = 59–61 s Overall MTP restart timer at the signalling point whose MTP restarts T21 = 63–65 s Overall MTP restart timer at a signalling point adjacent to one whose MTP restarts T22 = 3–6 min Local inhibit test timer (provisional value) T23 = 3–6 min Remote inhibit test timer (provisional value) T24 = 500 ms Stabilizing timer after removal of local processor outage, used in LPO latching to RPO (national option) Note: The values of the MTP restart timers (T18–T21) defined above are for use during normal operation. It might be advantageous for the network operator to de- fine an alternative value for each timer, for use in potential network failures. Such an emergency might be recognized by an abnormally large number of outages, and it would be at the descretion of the operator to use the emergency set of timer values within the network. Thus, the selection of the appropriate timer set is the responsi- bility of the network operator. 1 The maximum value may be extended at the discretion of the management function in certain situations, e.g., many signalling points being unavailable or signalling points of known long-term unavailability. A.5 SUA Timer Values 261 A.3 SCTP Timers and Protocol Parameter Values SCTP Timers: T1-init Association initialization timer T1-cookie Cookie timer T2-shutdown Association shutdown timer T3-rtx Retransmission timer For the rules to determine the proper timer values we refer to RFC 2960, Stream Control Transmission Protocol, Sect. 6.3: Management of Retransmission Timer. Recommended protocol parameters: RTO.Initial = 3 s RTO.Min = 1 s RTO.Max = 60 s RTO.Alpha = 1/8 RTO.Beta = 1/4 Valid.Cookie.Life = 60 s Association.Max.Retrans = 10 attempts Path.Max.Retrans = 5 attempts (per destination address) Max.Init.Retransmits = 8 attempts HB.interval = 30 s These values are taken from RFC 2960, Stream Control Transmission Protocol, Sect. 14: Suggested SCTP Protocol Parameter Values. A.4 M2UA and M3UA Timer Values The following default values are recommended: T(r) = 2 s Recovery timer “AS pending” T(ack) = 2 s Acknowledgement timer T(beat) = 30 s Heartbeat timer These values are taken from RFC 3331, Signalling System 7 (SS7) Message Transfer Part 2 (MTP2) - User Adaptation Layer, Sect. 6: Timer Values. A.5 SUA Timer Values The following timer values are taken from RFC 3868, Signalling Connection Control Part User Adaptation Layer (SUA), Sect. 8: Timer Values. T(r) = 2 s Recovery timer “AS pending” T(ack) = 2 s Acknowledgement timer T(beat) = 30 s Heartbeat timer T(ias) = 7 min Inactivity send timer T(iar) = 15 min Inactivity receive timer Appendix B Abbreviations AE Application entity AMF Network address translation and mapping function AP Application process ARP Address resolution protocol AS Application server ASE Application service elements ASP Application server process ASPSM ASP state maintenance ASPTM ASP traffic maintenance ATM Asynchronous transfer mode B-ISDN Broadband ISDN BEAT Heartbeat BSN Backward sequence number CBA Changeback acknowledgement CBD Changeback declaration CC Connection confirm CI Congestion indication CIC Circuit identification code CLDR Connectionless data response CLDT Connectionless data transfer CLM Congested link method COAK Connection acknowledge CODA Connection-oriented data acknowledgement CODT Connection-oriented data transfer COERR Connection-oriented error COO Changeover order CORE Connection request CR Connection request CP Common part CR Circuit related 264 Appendix B Abbreviations CS Capability set DAUD Destination state audit DAVA Destination available DPC Destination point code DUP Data User Part DRST Destination restricted DUNA Destination unavailable DUPU Destination User Part unavailable ECA Extended changeover acknowledgement ECO Extended changeover order FISU Fill-in signal unit FSN Forward sequence number FSNC Forward sequence number of the last message accepted by the remote endpoint GT Global title GTT Global title translation HLR Home location register IAM Initial address message ICMP Internet control message protocol IETF Internet Engineering Task Force IN Intelligent network INAP Intelligent Network Application Part IP Internet protocol IPS7 Internet protocol Signalling System No. 7 IPSP IP signalling point ISDN Integrated services digital network ISSP Inter-soft switch communications protocol ISUP ISDN User Part ITU International Telecommunication Union IUA Q.921 User adaptation layer LAN Local area network LIA Inhibit acknowledgement LIN Link inhibit LSSU Link status signal unit LUDT Long unitdata LUDTS Long unit data service M2PA SS 7 MTP-2 user peer-to-peer adaptation layer M2UA SS 7 MTP-2 user adaptation layer M3UA SS 7 MTP-3 user adaptation layer MAC Media access control MAC Message authentication code MAP Mobile Application Part MG Media gateway MGC Media gateway controler MGCP Media gateway control protocol Appendix B Abbreviations 265 MGCU Media gateway control unit MGMT Management MIS Number of inbound streams MRVA MTP routing verification acknowledgement MRVR MTP routing verification result MRVT MTP routing verification test MSU Message signal unit MTP Message Transfer Part MTU Maximum transmission unit NI Network indicator NIF Nodal interworking function NTFY Notify message OM Octet method OMAP Operations, Maintenance, and Administration Part OPC Originating point code OS Number of outband streams OSI Open Systems Interconnection PDU Protocol data units PLMN Public land mobile network PSTN Public switched telephone network RCT Signalling route set congestion test RELCO Release complete RELRE Release request RESCO Reset confirm RESRE Reset request RIL Restricted importance level RKM Routing key management RL Restriction level RLC Release complete RLSD Connection released RSC Reset confirmation RSL Restriction sublevel RSM Route set method RSR Reset request RST Signalling route set test RTO Retransmission time-out RTT Round-trip time SAAL Signalling ATM adaptation layer SCCP Signalling Connection Control Part SCMG SCCP management SCN Switched circuit network SCON SS 7 network congestion SCP Service control point SCRC SCCP routing control SCTP Stream control transmission protocol 266 Appendix B Abbreviations SDU Service data units SEP Signalling end point SG Signalling gateway SGP Signalling gateway process SGU Signalling gateway unit SI Service indicator SIG Signalling transport SIGTRAN Signalling transport working group (IETF) SIO Service information octet SIOS Status indication out of service SIP Session initiation protocol SLC Signalling link code SLS Signalling link selection SMS Short message service SPC Signalling point code SPMC Signalling point management cluster SRM Signalling route management SRSCT Signalling route set congestion test SRTT Smooth round trip time SS 7 Signalling System No. 7 SSA Subsystem allowed SSC Subsystem congested SSCF Service-specific coordination function SSCOP Service-specific connection-oriented protocol SSCOPMCE Service-specific connection-oriented protocol in a multi-link and connectionless environment SSCS Service-specific convergence sublayer SSN Subsystem number SSN Stream sequence number SSNM SS7 signalling network management SSP Service switching point SSP Subsystem prohibited SST Subsystem status test STP Signalling transfer point SUA SCCP user adaptation layer TCB Transmission control block TCP Transmission control protocol TFA Transfer allowed TFC Transfer controlled TFP Transfer prohibited TFR Transfer restricted TMN Telecommunications management network TRA Traffic restart allowed TSN Transmission sequence number TUP Telephone User Part Appendix B Abbreviations 267 UDP User datagram protocol UDT Unitdata UDTS Unitdata service UPU User Part unavailability VCC Virtual channel connections VoIP Voice over IP XUDT Extended unitdata XUDTS Extended unitdata service References 1. ITU-T Recommendation Q.700, Introduction to CCITT Signalling System No. 7 2. ITU-T Recommendations Q.720–Q.729, Telephone User Part (TUP) 3.
Load more

Recommended publications
  • Communications Society While the World Benefi Ts from What’S New, IEEE Can Focus You on What’S Next
    IEEE January 2017, Vol. 55, No. 1 OMMUNICATIONS C MAGAZINE •Enabling Mobile and Wireless Technologies for Smart Cities •Impact of Next-Generation Mobile Technologies on IoT–Cloud Convergence •Network and Service Management •Ad Hoc and Sensor Networks •Next Generation 911 A Publication of the IEEE Communications Society www.comsoc.org While the world benefi ts from what’s new, IEEE can focus you on what’s next. Develop for tomorrow with today’s most-cited research. Over 3 million full-text technical documents can power your R&D and speed time to market. t *&&&+PVSOBMTBOE$POGFSFODF1SPDFFEJOHT t *&&&4UBOEBSET t *&&&8JMFZF#PPLT-JCSBSZ t *&&&F-FBSOJOH-JCSBSZ t 1MVTDPOUFOUGSPNTFMFDUQVCMJTIJOHQBSUOFST IEEE Xplore® Digital Library Discover a smarter research experience. Request a Free Trial www.ieee.org/tryieeexplore Follow IEEE Xplore on IENYCM3402.indd 1 12/08/14 5:30 PM Director of Magazines Raouf Boutaba, University of Waterloo (Canada) Editor-in-Chief IEEE Osman S. Gebizlioglu, Huawei Tech. Co., Ltd. (USA) Associate Editor-in-Chief Tarek El-Bawab, Jackson State University (USA) OMMUNICATIONS Senior Technical Editors C MAGAZINE Nim Cheung, ASTRI (China) Nelson Fonseca, State Univ. of Campinas (Brazil) Steve Gorshe, PMC-Sierra, Inc (USA) JANUARY 2017, vol. 55, no. 1 Sean Moore, Centripetal Networks (USA) www.comsoc.org/commag Peter T. S. Yum, The Chinese U. Hong Kong (China) Technical Editors Mohammed Atiquzzaman, Univ. of Oklahoma (USA) 4 THE PRESIDENT’S PAGE Guillermo Atkin, Illinois Institute of Technology (USA) Mischa Dohler, King’s College London (UK) 6 CONFERENCE REPORT/IEEE ONLINEGREENCOMM 2016 Frank Effenberger, Huawei Technologies Co.,Ltd. (USA) Tarek El-Bawab, Jackson State University (USA) 8 CONFERENCE PREVIEW/IEEE WCNC 2017 Xiaoming Fu, Univ.
    [Show full text]
  • INAP); Part 1: Protocol Specification for Camel Phase 2 2 Draft ETSI EN 301 668-1 V1.1.1 (1999-07
    Draft ETSI EN 301 668-1 V1.1.1 (1999-07) European Standard (Telecommunications series) Intelligent Network (IN); Intelligent Network Capability Set 1 (CS1) extension; Intelligent Network Application Protocol (INAP); Part 1: Protocol specification for Camel Phase 2 2 Draft ETSI EN 301 668-1 V1.1.1 (1999-07) Reference DEN/SPS-03053-1 (fg090ico.PDF) Keywords IN, INAP, ISDN, mobile, protocol ETSI Postal address F-06921 Sophia Antipolis Cedex - FRANCE Office address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Internet [email protected] Individual copies of this ETSI deliverable can be downloaded from http://www.etsi.org If you find errors in the present document, send your comment to: [email protected] Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. © European Telecommunications Standards Institute 1999. All rights reserved. ETSI 3 Draft ETSI EN 301 668-1 V1.1.1 (1999-07) Contents Intellectual Property Rights ............................................................................................................................... 6 Foreword............................................................................................................................................................ 6 1 Scope.......................................................................................................................................................
    [Show full text]
  • Network Interoperability
    Network Reliability and Interoperability Council VI Focus Group 3 Network Interoperability Final Report November 2003 NRIC VI Focus Group 3 Network Interoperability Final Report Table of Contents Table of Contents 1. Executive Summary...................................................................................................................3 2. Background and Scope of Focus Group 3 ................................................................................6 2.1 Structure of NRIC VI..........................................................................................................6 2.2 Scope of NRIC VI FG3 Interoperability Effort....................................................................6 2.3 FG3 Team Members .......................................................................................................11 3. VoIP Interoperability Gap Analysis ..........................................................................................13 3.1 Signaling Architectures....................................................................................................15 3.1.1 Signaling System 7 ................................................................................................15 3.1.2 Session Initiation Protocol .....................................................................................16 3.1.3 SIP to PSTN Interworking......................................................................................19 3.1.4 Bearer Independent Call Control ...........................................................................22
    [Show full text]
  • Technical Architecture Alternatives for Open Connectivity Roaming Hubbing Model
    GSM Association Non-confidential Official Document IR.80 - Technical Architecture Alternatives for Open Connectivity Roaming Hubbing Model Technical Architecture Alternatives for Open Connectivity Roaming Hubbing Model Version 2.0 26 February 2015 This is a Non-binding Permanent Reference Document of the GSMA Security Classification: Non-confidential Access to and distribution of this document is restricted to the persons permitted by the security classification. This document is confidential to the Association and is subject to copyright protection. This document is to be used only for the purposes for which it has been supplied and information contained in it must not be disclosed or in any other way made available, in whole or in part, to persons other than those permitted under the security classification without the prior written approval of the Association. Copyright Notice Copyright © 2015 GSM Association Disclaimer The GSM Association (“Association”) makes no representation, warranty or undertaking (express or implied) with respect to and does not accept any responsibility for, and hereby disclaims liability for the accuracy or completeness or timeliness of the information contained in this document. The information contained in this document may be subject to change without prior notice. Antitrust Notice The information contain herein is in full compliance with the GSM Association’s antitrust compliance policy. V2.0 Page 1 of 95 GSM Association Non-confidential Official Document IR.80 - Technical Architecture Alternatives for
    [Show full text]
  • N2SCP CAMEL/INAP Conformance
    N-Squared Software N2SCP CAP/INAP Protocol Conformance Statement Version 2020-08 N2SCP CAP/INAP Protocol Conformance Statement Version 2020-08 1 Document Information 1.1 Scope and Purpose This document describes the implementation of the CAMEL (including INAP variants) protocol for real- time SCP flows for voice interaction control using the N-Squared Service Control Point (N2SCP) family of applications. The N2SCP family of applications includes: • N2DSG-SCP (CAMEL/Diameter Signalling Gateway) • N2NP-SCP (Number Portability translation application) • N2ACD-SCP (Advanced Call Distribution application for Toll-Free and other routing services) • …plus other custom SCP services that may be developed. All of these applications use the N2SCP framework. They do not typically use all of the framework. Please refer to the relevant technical guide ([R-N2-DSG-TG], [R-N2-NP-TG], [R-N2-ACD-TG]) for application-specific scenarios and configuration parameters. This document assumes a working knowledge of the relevant CAP/INAP and other telephony concepts, including the standard CAP/INAP interactions between an SCP, an SSP, and an SRP (or Intelligent Peripheral). 1.2 Definitions, Acronyms, and Abbreviations Term Meaning AC Apply Charging ACR Apply Charging Report ARI Assist Request Instructions ASN.1 Abstract Syntax Notation One AT Activity Test BCSM Basic Call State Model CAMEL Customized Applications for Mobile Network Enhanced Logic CAP CAMEL Application Part CIR Call Information Request/Report CTR Connect To Resource CWA Continue With Argument DFC
    [Show full text]
  • ISUP) Version 4 for the International Interface; Part 1: Basic Services
    Final draft ETSI EN 300 356-1 V4.2.1 (2001-05) European Standard (Telecommunications series) Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1999) modified] 2 Final draft ETSI EN 300 356-1 V4.2.1 (2001-05) Reference REN/SPAN-01082-01 Keywords ISDN, SS7, ISUP, service, basic, endorsement ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.:+33492944200 Fax:+33493654716 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://www.etsi.org/tb/status/ If you find errors in the present document, send your comment to: [email protected] Copyright Notification No part may be reproduced except as authorized by written permission.
    [Show full text]
  • Aculab SS7 Developer's Guide
    Aculab SS7 Developer's guide Revision 6.15.1 SS7 Developer's guide PROPRIETARY INFORMATION The information contained in this document is the property of Aculab Plc and may be the subject of patents pending or granted, and must not be copied or disclosed without prior written permission. It should not be used for commercial purposes without prior agreement in writing. All trademarks recognised and acknowledged. Aculab Plc endeavours to ensure that the information in this document is correct and fairly stated but does not accept liability for any error or omission. The development of Aculab products and services is continuous and published information may not be up to date. It is important to check the current position with Aculab Plc. Copyright © Aculab plc. 2006-2018: All Rights Reserved. Document Revision Rev Date By Detail 1.0.0 28.04.06 DJL First issue 1.0.1 12.06.06 DJL Updates to section 8 6.8.3 19.03.07 WM/WN Addition of Distributed TCAP information 6.10.0B1 09.02.08 NW/DSL Addition of Sigtran M3UA 6.10.1 12.09.08 WM Clarified continuity_check_ind field. Removed hyperlinks to cross-referenced documents. 6.10.2 14.10.08 NW Addition of SCCP routing information. 6.10.3 30.10.08 NW Updated after review. 6.11.0 14.09.10 DSL Fonts changed to Arial 6.11.2 18.01.11 DSL Minor corrections 6.11.11 06.10.11 DSL Minor corrections 6.12.2 05.07.13 DSL IPv6 support. Additional ISUP information. 6.13.0 27.10.14 DSL Minor corrections 6.14.0 15.09.16 DSL Minor corrections 6.15.1 31.08.18 DSL Add M2PA 2 Revision 6.15.1 SS7 Developer's guide CONTENTS 1 Introduction ..................................................................................................
    [Show full text]
  • SS7 – Signaling System Number 7
    SS7 – Signaling System Number 7 818 West Diamond Avenue - Third Floor, Gaithersburg, MD 20878 Phone: (301) 670-4784 Fax: (301) 670-9187 Email: [email protected] Website: https://www.gl.com 1 SS7 – A Brief Overview • Defined by ITU-T in its Q.700-series, ANSI, and ETSI • Out-of-band signaling system • Designed for call control, remote network management, and maintenance • Combines circuit-switched and packet-switched networks • Suitable for use on point-to-point terrestrial and satellite links • SS7 networks are flexible, reliable, with capacity up to 64 Kbps 2 T1 E1 Analyzer Hardware Platforms 3 TDM mTOP™ Solutions mTOP™ tProbe™ FXO FXS Dual UTA 1U tProbe™ w/ FXO FXS 4 Applications • Allows telecommunications networks to offer wide ranges of services such as telephony, fax transmission, data transfer • Setting up and tearing down circuit-switched connections • Support for Intelligent Network (IN) services such as toll-free (800) calling, SMS, EMS • Mobility management in cellular networks • Local Number Portability (LNP) to allow subscribers to change their service, service provider, and location without needing to change their telephone number • Support for ISDN 5 SS7 Network Architecture 6 Signaling Points • SS7 constitutes three different types of Signaling Points (SP) – ➢ Signaling Transfer Point ➢ Service Switching Point ➢ Service Control Point Signaling Transfer Points Service Switching Points Service Control Points Transfers SS7 messages between Capable of controlling voice circuits via a Acts as an interface between telecommunications other SS7 nodes voice switch databases and the SS7 network Acts as a router for SS7 messages Converts signaling from voice switch into Provide the core functionality of cellular networks SS7 format Does not originate SS7 messages Can originate and terminate messages, but Provides access to database cannot transfer them 7 Signaling Links Access Links connects SCP or SSP to an STP.
    [Show full text]
  • Dialogic Global Call SS7 Technology Guide
    Dialogic® Global Call SS7 Technology Guide November 2008 05-2274-006 Copyright and Legal Notice Copyright © 2000-2008, Dialogic Corporation. All Rights Reserved. You may not reproduce this document in whole or in part without permission in writing from Dialogic Corporation at the address provided below. All contents of this document are furnished for informational use only and are subject to change without notice and do not represent a commitment on the part of Dialogic Corporation or its subsidiaries (“Dialogic”). Reasonable effort is made to ensure the accuracy of the information contained in the document. However, Dialogic does not warrant the accuracy of this information and cannot accept responsibility for errors, inaccuracies or omissions that may be contained in this document. INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH DIALOGIC® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN A SIGNED AGREEMENT BETWEEN YOU AND DIALOGIC, DIALOGIC ASSUMES NO LIABILITY WHATSOEVER, AND DIALOGIC DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF DIALOGIC PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT OF A THIRD PARTY. Dialogic products are not intended for use in medical, life saving, life sustaining, critical control or safety systems, or in nuclear facility applications. Due to differing national regulations and approval requirements, certain Dialogic products may be suitable for use only in specific countries, and thus may not function properly in other countries. You are responsible for ensuring that your use of such products occurs only in the countries where such use is suitable.
    [Show full text]
  • SIGTRAN User Guide 910-5595-001 Revision B December 2009
    Tekelec EAGLE® 5 Integrated Signaling System SIGTRAN User Guide 910-5595-001 Revision B December 2009 Copyright 2009 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...............................................................................................................10 Manual conventions................................................................................................................11 Documentation Admonishments..........................................................................................11 Customer Care Center............................................................................................................11 Emergency Response..............................................................................................................14 Related Publications...............................................................................................................14
    [Show full text]
  • SS7 Protocol Stack
    CHAPTER 3 SS7 Protocol Stack This chapter describes the components of the SS7 protocol stack. A stack is a set of data storage locations that are accessed in a fixed sequence. The SS7 stack is compared against the Open Systems Interconnection (OSI) model for communication between different systems made by different vendors. Figure 3-1 shows the components of the SS7 protocol stack. SS7 Level 1: Physical Connection This is the physical level of connectivity, virtually the same as Layer 1 of the OSI model. SS7 specifies what interfaces will be used, both Bellcore (Telecordia) and ANSI call for either the DS0A or the V.35 interface. Because central offices are already using DS1 and DS3 facilities to link one another, the DS0A interface is readily available in all central offices, and is preferred in the SS7 network. As the demands on the SS7 network increase (local number portability), and as the industry migrates toward ATM networks, the DS1 interface will become the link interface. SS7 Level 2: Data Link The data link level provides the network with sequenced delivery of all SS7 message packets. Like the OSI data link layer, it is only concerned with the transmission of data from one node to the next, not to its final destination in the network. Sequential numbering is used to determine if any messages have been lost during transmission. Each link uses its own message numbering series independent of other links. SS7 uses CRC-16 error checking of data and requests retransmission of lost or corrupted messages. Length indicators allow Level 2 to determine what type of signal unit it is receiving, and how to process it.
    [Show full text]
  • MTP/SCCP/SSCOP and SIGTRAN (Message of SS7 Over IP); Message Transfer Part 3 User Adaptation Layer (M3UA)
    ETSI TS 102 142 V1.1.1 (2003-05) Technical Specification Services and Protocols for Advanced Networks (SPAN); MTP/SCCP/SSCOP and SIGTRAN (Message of SS7 over IP); Message transfer part 3 User Adaptation layer (M3UA) [Endorsement of RFC 3332 (2002), modified] 2 ETSI TS 102 142 V1.1.1 (2003-05) Reference DTS/SPAN-130263 Keywords M3UA, MTP, SCCP, SIGTRAN, SS7, endorsement ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: [email protected] Copyright Notification No part may be reproduced except as authorized by written permission.
    [Show full text]