1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T G.988 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1 (05/2014) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system Optical line systems for local and
2、access networks ONU management and control interface (OMCI) specification Amendment 1: Maintenance Recommendation ITU-T G.988 (2012) Amendment 1 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GEN
3、ERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECT
4、ION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 General G.900G.909
5、Parameters for optical fibre cable systems G.910G.919 Digital sections at hierarchical bit rates based on a bit rate of 2048 kbit/s G.920G.929 Digital line transmission systems on cable at non-hierarchical bit rates G.930G.939 Digital line systems provided by FDM transmission bearers G.940G.949 Digi
6、tal line systems G.950G.959 Digital section and digital transmission systems for customer access to ISDN G.960G.969 Optical fibre submarine cable systems G.970G.979 Optical line systems for local and access networks G.980G.989 Metallic access networks G.990G.999 MULTIMEDIA QUALITY OF SERVICE AND PER
7、FORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec.
8、 ITU-T G.988 (2012)/Amd.1 (05/2014) i Recommendation ITU-T G.988 ONU management and control interface (OMCI) specification Amendment 1 Maintenance Summary Amendment 1 to Recommendation ITU-T G.988 (2012) continues the maintenance and evolution of optical network unit (ONU) management and control int
9、erface (OMCI). A number of robustness improvements are included, along with corrections of editorial errors. Significant feature extensions include the alignment of xDSL services with Recommendation ITU-T G.997.1 (2012) and the addition of managed entities (MEs) and attributes in support of Ethernet
10、 passive optical network (EPON). History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.988 2010-10-07 15 11.1002/1000/10891 1.1 ITU-T G.988 (2010) Amd. 1 2011-04-13 15 11.1002/1000/11126 1.2 ITU-T G.988 (2010) Amd. 2 2012-04-22 15 11.1002/1000/11501 1.3 ITU-T G.988 (2010) Cor. 1
11、 2012-06-13 15 11.1002/1000/11641 2.0 ITU-T G.988 2012-10-29 15 11.1002/1000/11784 2.1 ITU-T G.988 (2012) Amd. 1 2014-05-14 15 11.1002/1000/12185 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID.
12、For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.988 (2012)/Amd.1 (05/2014) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecom
13、munication 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 standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Ass
14、embly (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 covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology wh
15、ich fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with
16、this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory la
17、nguage such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this
18、 Recommendation 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 others outside of the Recommendation development process. As of the date
19、of approval of this Recommendation, ITU had received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the T
20、SB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.988 (2012)/Amd.1 (05/2014) 1 Recommendation ITU-T G.988 ONU management and control inter
21、face (OMCI) specification Amendment 1 Maintenance 1) Scope This amendment continues the maintenance and evolution of optical network unit (ONU) management and control interface (OMCI) as defined in Recommendation ITU-T G.988 (2012) as amended. A number of robustness improvements are included, along
22、with corrections of editorial errors. Significant feature extensions include the alignment of xDSL services with ITU-T G.997.1 (2012) and the addition of managed entities (MEs) and attributes in support of Ethernet passive optical network (EPON). NOTE In the remainder of this amendment, the headings
23、 of clauses are the same as the corresponding headers in Recommendation ITU-T G.988 (2012). 2) Modifications to ITU-T G.988 2.1) Clause 2, References In clause 2, replace the version of Recommendation ITU-T G.997.1 (2009) with the 2012 version, and add ITU-T G.993.5, ITU-T G.998.4 and IEEE P1904.1 (
24、moved from the Bibliography) as follows: ITU-T G.997.1 Recommendation ITU-T G.997.1 (2012), Physical layer management for digital subscriber line transceivers. ITU-T G.993.5 Recommendation ITU-T G.993.5 (2010), Self-FEXT cancellation (vectoring) for use with VDSL2 transceivers. ITU-T G.998.4 Recomme
25、ndation ITU-T G.998.4 (2010), Improved impulse noise protection for DSL transceivers. IEEE P1904.1 IEEE P1904.1, Standard for Service Interoperability in Ethernet Passive Optical Networks (SIEPON). 2.2) Clause 4, Abbreviations and acronyms Add the following new acronyms to clause 4 in alphabetic ord
26、er: DA Destination Address EFM Ethernet in the First Mile EPON Ethernet Passive Optical Network HEC Header Error Check MPCPDU Multi-Point Control Protocol Data Unit PME Physical Medium Entity REIN Repetitive Electrical Impulse Noise SHINE Single High Impulse Noise Event 2 Rec. ITU-T G.988 (2012)/Amd
27、.1 (05/2014) TQ Time Quantum VTU VDSL2 Transceiver Unit 2.3) Clause 8.1, Managed entities Add the following new MEs to Table 8-1 in alphabetic order: Clause Managed entity ITU-T G.984, ITU-T G.987 ITU-T G.986 IEEE 802.3, IEEE 802.3av 9.2.19 ANI-E M 9.2.20 EPON downstream performance monitoring confi
28、guration 9.2.18 L2 multicast GEM interworking termination point 9.7.31 xDSL xTU-C performance monitoring history data part 2 9.7.32 PTM performance monitoring history data xDSL 9.7.33 VDSL2 line configuration extensions 3 9.7.34 Vectoring line configuration extensions 9.7.35 xDSL channel configurati
29、on profile part 2 9.7.36 xTU data gathering configuration 9.7.37 xDSL line inventory and status data part 8 9.7.38 VDSL2 line inventory and status data part 4 9.7.39 Vectoring line inventory and status data 9.7.40 Data gathering line test, diagnostic and status 9.9.21 SIP agent config data 2 9.15.1
30、Physical path termination point RS232/RS485 UNI 9.15.2 RS232/RS485 Port Operation Configuration data 9.15.3 RS232/RS485 performance monitoring history data 9.7.41 EFM bonding group 9.7.42 EFM bonding link 9.7.43 EFM bonding group performance monitoring history data 9.7.44 EFM bonding group performan
31、ce monitoring history data part 2 9.7.45 EFM bonding link performance monitoring history data 9.7.46 EFM bonding port performance monitoring history data 9.7.47 EFM bonding port performance monitoring history data part 2 9.3.34 Ethernet frame extended PM 64-Bit 9.12.17 Threshold data 64-Bit Rec. ITU
32、-T G.988 (2012)/Amd.1 (05/2014) 3 2.4) Clause 9.1.2, ONU2-G Replace the OMCC version attribute definition in clause 9.1.2 with the following text: OMCC version: This attribute identifies the version of the OMCC protocol being used by the ONU. This allows the OLT to manage a network with ONUs that su
33、pport different OMCC versions. Release levels of ITU-T G.984.4 are supported with code points of the form 0x8y and 0x9y, where y is a hexadecimal digit in the range 0F. Support for continuing revisions of this Recommendation is defined in the 0xAy range. 0x80 ITU-T G.984.4 (06/04) NOTE for historic
34、reasons, this code point may also appear in ONUs that support later versions of ITU-T G.984.4. 0x81 ITU-T G.984.4 2004 Amd.1 (06/05) 0x82 ITU-T G.984.4 2004 Amd.2 (03/06) 0x83 ITU-T G.984.4 2004 Amd.3 (12/06) 0x84 ITU-T G.984.4 2008 (02/08) 0x85 ITU-T G.984.4 2008 Amd .1 (06/09) 0x86 ITU-T G.984.4 2
35、008Amd.2 (2009). Baseline message set only, without the extended message set option 0x96 ITU-T G.984.4 2008 Amd.2 (2009). Extended message set option, in addition to the baseline message set. 0xA0 ITU-T G.988 (2010). Baseline message set only, without the extended message set option 0xA1 ITU-T G.988
36、 Amd.1 (2011). Baseline message set only 0xA2 ITU-T G.988 Amd.2 (2012). Baseline message set only 0xA3 ITU-T G.988 (2013). Baseline message set only 0xA4 ITU-T G.988 Amd.1 (2014). Baseline message set only 0xB0 ITU-T G.988 (2010). Baseline and extended message set 0xB1 ITU-T G.988 Amd.1 (2011). Base
37、line and extended message set 0xB2 ITU-T G.988 Amd.2 (2012). Baseline and extended message set 0xB3 ITU-T G.988 (2013). Baseline and extended message set 0xB4 ITU-T G.988 (2014). Baseline and extended message set (R) (mandatory) (1 byte) 2.5) Clause 9.1.14, ONU dynamic power management control Repla
38、ce clause 9.1.14 with the following text: This managed entity models the ONUs ability to enter power conservation modes in cooperation with the OLT in an ITU-T G.987 system. ITU-T G.987.3 originally specified two alternative modes, doze and cyclic sleep. The subsequent revision of ITU-T G.987.3 simp
39、lified the specification providing a single power conservation mode, watchful sleep. An ONU that supports power conservation modes automatically creates an instance of this managed entity. 4 Rec. ITU-T G.988 (2012)/Amd.1 (05/2014) Relationships One instance of this managed entity is associated with
40、the ONU managed entity. Attributes Managed entity ID: This attribute uniquely identifies each instance of this managed entity. There is only one instance, number 0. (R) (mandatory) (2 bytes) Power reduction management capability: This attribute declares the ONUs support for managed power conservatio
41、n modes, as defined in ITU-T G.987.3. It is a bit map in which the bit value 0 indicates no support for the specified mode, while the bit value 1 indicates that the ONU does support the specified mode. (R) (mandatory) (1 byte) Codepoints are assigned as follows: Value Meaning 0 No support for power
42、reduction 1 Doze mode supported 2 Cyclic sleep mode supported 3 Both doze and cyclic sleep modes supported 4 Watchful sleep mode supported 5255 Reserved Power reduction management mode: This attribute enables one or more of the ONUs managed power conservation modes. It is a bit map in which the bit
43、value 0 disables the mode, while the value 1 enables the mode. Bit assignments are the same as those of the power reduction management capability attribute. The default value of each bit is 0. (R, W) (mandatory) (1 byte) Itransinit: This attribute is the ONU vendors statement of the complete transce
44、iver initialization time: the worst-case time required for the ONU to regain full functionality when leaving the asleep state in cyclic sleep mode or low power state in watchful sleep mode (i.e., turning on both the receiver and the transmitter and acquiring synchronization to the downstream flow),
45、measured in units of 125-microsecond frames. The value zero indicates that the sleeping ONU can respond to a bandwidth grant without delay. (R) (mandatory) (2 bytes) Itxinit: This attribute is the ONU vendors statement of the transmitter initialization time: the time required for the ONU to regain f
46、ull functionality when leaving the listen state (i.e., turning on the transmitter), measured in units of 125-microsecond frames. The value zero indicates that the dozing ONU can respond to a bandwidth grant without delay. If watchful sleep is enabled, the ONU ignores this attribute. (R) (mandatory)
47、(2 bytes) Maximum sleep interval: The Isleep/Ilowpower attribute specifies the maximum time the ONU spends in its asleep, listen, or low power states, as a count of 125-microsecond frames. Local or remote events may truncate the ONUs sojourn in these states. The default value of this attribute is 0.
48、 (R, W) (mandatory) (4 bytes) Maximum receiver-off interval: The Irxoff attribute specifies the maximum time the OLT can afford to wait from the moment it decides to wake up an ONU in the low Rec. ITU-T G.988 (2012)/Amd.1 (05/2014) 5 power state of the watchful sleep mode until the ONU is fully oper
49、ational, specified as a count of 125-microsecond frames. (R, W) (mandatory) (4 bytes) Minimum aware interval: The Iaware attribute specifies the time the ONU spends in its aware state, as a count of 125-microsecond frames, before it re-enters asleep or listen states. Local or remote events may independently cause the ONU to enter an active state rather than returning to a sleep state. The default value of this attribute is 0. (R, W) (mandatory) (4 bytes) Minimum active held interval: The Ih
