1、 International Telecommunication Union ITU-T Series GTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 44(06/2007) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Test plan to verify B-PON interoperability ITU-T G-series Recommendations Supplement 44 ITU-T G-SERIES RE
2、COMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METAL
3、LIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699
4、DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PAC
5、KET OVER TRANSPORT ASPECTS G.8000G.8999ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. G series Supplement 44 (06/2007) i Supplement 44 to ITU-T G-series Recommendations Test plan to verify B-PON interoperability Summary This supplement defines a
6、test plan whose purpose is to verify interoperability between an OLT and an ONU in the ITU-T G.983-series of Recommendations which refer to a Broadband Passive Optical Network (B-PON). When testing peer-to-peer interoperability, such as between SONET/SDH ADMs, both network elements are usually consi
7、dered to reside at the same hierarchical level, but in a technology such as B-PON, with a master/slave relationship, it is more appropriate to evaluate interoperability relative to a baseline, or master, equipment. In this supplement, the OLT is regarded as the baseline equipment, against which the
8、ONU is evaluated. This is not to be understood as an assertion that the OLT is necessarily right in the event of incompatibility, merely to reflect the reality that a network operator is likely to have OLTs in place and is interested in qualifying additional ONUs for use on these OLTs. From this per
9、spective, the unit under test is an ONU. Interoperability testing is conducted by, or on behalf of, four interests: the OLT vendor, the ONU vendor, one or more network operators who are potential customers, and possibly a third-party testing lab. As a preliminary to an interoperability testing campa
10、ign, all interests are expected to agree on features, functions and configurations. Only the features supported by both OLT and ONU need be tested but all test cases need to be addressed with either a test result or an indication why there is no result (Not supported, etc.). As to test configuration
11、s, the vendors may be requested to supply equipment (of a given vintage), and the network operator may be interested in testing in the presence of other ONU makes and models, or with particular ODN characteristics. The testing lab needs to have the necessary power, space, test equipment and expertis
12、e for the agreed campaign. In this supplement, the manufacturers are referred to as the OLT vendor and the ONU vendor respectively, while tests are deemed to be conducted by a test operator. The term ONU includes ONTs as well, and the term OLT includes the entire network element at the head end of t
13、he PON, not just the G.983 interface. Source Supplement 44 to ITU-T G-series Recommendations was agreed on 15 June 2007 by ITU-T Study Group 15 (2005-2008). ii G series Supplement 44 (06/2007) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the fi
14、eld of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardi
15、zing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covere
16、d by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate b
17、oth a telecommunication administration and a recognized operating agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the publication is achieved when all of th
18、ese mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the publication is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU d
19、raws attention to the possibility that the practice or implementation of this publication may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or
20、 others outside of the publication development process. As of the date of approval of this publication, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, implementers are cautioned that this may not represent the
21、 latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2008 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. G series Supplement 44 (06/2007)
22、 iii CONTENTS Page 1 Scope 1 2 References. 2 3 Abbreviations and acronyms 4 4 Interoperability guidelines 7 4.1 Overview 7 4.2 PON initialization and management. 7 4.3 AAL1 circuit emulation 8 4.4 AAL2 loop emulation services. 8 4.5 AAL5 data services 8 4.6 Video services 8 4.7 Multiple services tes
23、ting. 8 5 Test configuration and equipment 8 5.1 Network configuration 8 5.2 Equipment requirements. 9 5.3 Network equipment matrix. 9 5.4 Vendor features comparison matrix . 10 6 Optical compatibility verification. 10 6.1 Mean launch power 10 6.2 Receiver sensitivity 19 6.3 Receiver overload. 24 7
24、ONU turn-up and management. 28 7.1 ONU startup 28 7.2 TC-layer OAM operation . 35 7.3 Security functionality . 42 7.4 ONU management via OMCI. 48 7.5 OMCI equipment management 86 8 Service-related functionality. 89 8.1 DS1/E1 service . 89 8.2 Voice service 102 8.3 Data. 114 8.4 Video 145 8.5 Multi-s
25、ervice provisioning and verification . 145 8.6 OMCI service-related fault and performance management . 151 9 System and performance tests 152 9.1 Overview 152 9.2 Cold PON, multi-ONU. 153 9.3 Warm PON, multi-ONU. 155 9.4 Receiver performance. 159 iv G series Supplement 44 (06/2007) Page 9.5 Voice an
26、d data service stability 163 9.6 Warm PON, high utilization. 165 10 Fault recovery . 167 10.1 PON (optical network) faults 167 10.2 F5 OAM 176 10.3 Equipment faults. 179 10.4 Service-related faults 182 11 Optional functionality. 186 11.1 Dynamic bandwidth allocation. 186 11.2 AES (big key) encryptio
27、n. 188 11.3 Duplex PON operation . 188 Appendix I ODN test configurations 189 I.1 Configuration #1 Near cluster . 189 I.2 Configuration #2 Far cluster 190 I.3 Configuration #3 Near EUT, far cluster 191 I.4 Configuration #4 Far EUT, near cluster 191 G series Supplement 44 (06/2007) 1 Supplement 44 to
28、 ITU-T G-series Recommendations Test plan to verify B-PON interoperability 1 Scope This clause describes the scope of B-PON interoperability testing. It is important to understand what an interoperability test plan is not, as well as what it is. An interoperability test project includes only feature
29、s and capabilities that are claimed to be supported by both the OLT and the ONU. To apply a single interoperability test plan to all equipment combinations, the test report lists features and capabilities that are not claimed to be supported by one or both of the equipments, but tests of such cases
30、are not to be regarded as failures. The reader of the test report determines the importance of a not-supported feature. An interoperability test plan evaluates the ability of an OLT and an ONU to deliver subscriber services. Services are standardized to a greater or lesser extent; the definition of
31、a DS1 leaves very little to the imagination. But services frequently have performance aspects that are more suitable for characterization than for pass-fail results. An example might be the sustainable throughput of an Ethernet port or the echo performance of a voice channel. This supplement is base
32、d on ITU-T G.983-series Recommendations and other standards, and expects that deviation from standards be recorded in the test results. Many test cases also characterize the quality or performance of service delivery. Compliance with standards is neither wholly necessary nor sufficient to guarantee
33、that an OLT/ONU combination is suitable for a network providers needs. An interoperability test plan confirms that a given ONU functions properly when installed on an ODN with other ONUs. In general, the other ONUs can differ arbitrarily in make, model and capability from the ONU under test. The ven
34、dors and the test lab should agree in advance on a representative population of ONUs. An interoperability test plan verifies that an ONU can be fully managed through the OLT, within the scope of capabilities it claims to support. This includes all pertinent FCAPS functions, for example, initializati
35、on, provisioning, testing, fault isolation and maintenance, PM, backup, restoration, and software upgrade. An interoperability test plan is not a gauge of standards compliance. A proprietary combination of OLT and ONU could well be completely interoperable. However, the standards form the basis of t
36、he interoperability test plan in the expectation that they will closely describe most OLTs and ONUs. An interoperability test plan assumes a black-box view of the OLT-ONU combination. Information visible only through mechanisms such as debug ports is not valid as a test criterion. From a black-box p
37、erspective, some tests are clearly not possible, for example, the ability for the OLT to controllably inject faults such as bit errors or send invalid PLOAM messages. Some of the test cases are nevertheless written to use such capabilities, if they exist. If the equipments do not expose such special
38、ized mechanisms, it may be simply impossible to perform the test cases, and there is to be no implication that somehow it should have been possible. Ancillary equipment, such as a uninterruptible power supply (UPS) or a DSL modem, is not intrinsically within the scope of an OLT-ONU interoperability
39、test plan. However, if a vendor always recommends a given ancillary equipment for use with an ONU or OLT, the ancillary equipment can be included by agreement. The test is not intended to resolve to a level as to isolate the operability of ancillary equipment or the OLT/ONU. 2 G series Supplement 44
40、 (06/2007) With the exception of stress testing, in which the purpose of the test case is to oversubscribe resources of the network under test, any test case can fail if the test causes disruption to services that are not part of the test case. For the purpose of interoperability testing, it is assu
41、med that all testing is performed with the temperature in the range of 60 to 80F (16 to 27C) and the relative humidity in the range of 20% to 60%. If testing is performed under different environmental conditions, then any such deviations should be clearly noted in the resulting test report. If diffe
42、rent environmental conditions are required for a specific test case within this supplement, then these conditions will be explicitly stated in the test case. 2 References ITU-T G.983.1 ITU-T Recommendation G.983.1 (2005), Broadband optical access systems based on Passive Optical Networks (PON). ITU-
43、T G.983.2 ITU-T Recommendation G.983.2 (2005), ONT management and control interface specification for B-PON. ITU-T G.Imp983.2 ITU-T Recommendation G.Imp983.2 (2003), Implementers Guide to G.983.2. ITU-T G.983.3 ITU-T Recommendation G.983.3 (2001), A broadband optical access system with increased ser
44、vice capability by wavelength allocation. ITU-T G.983.4 ITU-T Recommendation G.983.4 (2001), A broadband optical access system with increased service capability using dynamic bandwidth assignment. ITU-T G.983.5 ITU-T Recommendation G.983.5 (2002), A broadband optical access system with enhanced surv
45、ivability. ITU-T I.321 ITU-T Recommendation I.321 (1991), B-ISDN protocol reference model and its application. ITU-T I.356 ITU-T Recommendation I.356 (2000), B-ISDN ATM layer cell transfer performance. ITU-T I.363.1 ITU-T Recommendation I.363.1 (1996), B-ISDN ATM Adaptation Layer specification: Type
46、 1 AAL. ITU-T I.363.2 ITU-T Recommendation I.363.2 (2000), B-ISDN ATM Adaptation layer specification: Type 2 AAL. ITU-T I.363.5 ITU-T Recommendation I.363.5 (1996), B-ISDN ATM Adaptation Layer specification: Type 5 AAL. ITU-T I.366.1 ITU-T Recommendation I.366.1 (1998), Segmentation and Reassembly S
47、ervice Specific Convergence Sublayer for the AAL type 2. ITU-T I.366.2 ITU-T Recommendation I.366.2 (2000), AAL type 2 service specific convergence sublayer for narrow-band services. ITU-T I.371 ITU-T Recommendation I.371 (2004), Traffic control and congestion control in B-ISDN. ITU-T I.432.1 ITU-T
48、Recommendation I.432.1 (1999), B-ISDN user-network interface Physical layer specification: General characteristics. ITU-T I.610 ITU-T Recommendation I.610 (1999), B-ISDN operation and maintenance principles and functions. G series Supplement 44 (06/2007) 3 AF-VMOA-0145.001 ATM Forum AF-VMOA-0145.001
49、 (2003), Loop Emulation Service Using AAL2. AF-VTOA-0078.000 ATM Forum AF-VTOA-0078.000 (1997), Circuit Emulation Service Interoperability Specification, Version 2.0. AF-VTOA-0089.000 ATM Forum AF-VTOA-0089.000 (1997), Voice and Telephony Over ATM-ATM Trunking using AAL1 for Narrowband Services, Version 1.0. ANSI T1.502*ANSI T1.502-1998, System M-NTSC Television Signals - Network Interface Specifications and Performance Parameters. ANSI/SCTE 07 ANSI/SCTE 07:2006, Digi
