1、 International Telecommunication Union ITU-T G.997.1TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 2(04/2013) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system Access networks Physical layer management for digital subscriber li
2、ne transceivers Amendment 2 Recommendation ITU-T G.997.1 (2012) Amendment 2 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYST
3、EMS 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 INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND
4、 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 Parameters for optical fibre cable systems G.910G.919 Digital section
5、s 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 Digital line systems G.950G.959 Digital section and digital transmission
6、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 Access networks G.990G.999MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARA
7、CTERISTICS 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. ITU-T G.997.1 (2012)/Amd.2 (04/2013) i Recommendation ITU-T G.997.1 Physical l
8、ayer management for digital subscriber line transceivers Amendment 2 Summary Amendment 2 to Recommendation ITU-T G.997.1 (2012) covers the following functionalities: Addition of parameters to enable the vectoring modes. Addition of parameters for the data gathering functionality. History Edition Rec
9、ommendation Approval Study Group 1.0 ITU-T G.997.1 1999-07-02 15 2.0 ITU-T G.997.1 2003-05-22 15 2.1 ITU-T G.997.1 (2003) Amd. 1 2003-12-14 15 2.2 ITU-T G.997.1 (2003) Amd. 2 2005-01-13 15 3.0 ITU-T G.997.1 2005-09-06 15 4.0 ITU-T G.997.1 2006-06-06 15 4.1 ITU-T G.997.1 (2006) Cor. 1 2006-12-14 15 4
10、.2 ITU-T G.997.1 (2006) Amd. 1 2006-12-14 15 4.3 ITU-T G.997.1 (2006) Amd. 2 2007-11-22 15 4.4 ITU-T G.997.1 (2006) Amd. 3 2008-08-22 15 5.0 ITU-T G.997.1 2009-04-22 15 5.1 ITU-T G.997.1 (2009) Cor. 1 2009-11-13 15 5.2 ITU-T G.997.1 (2009) Amd. 1 2010-06-11 15 5.3 ITU-T G.997.1 (2009) Amd. 2 2010-11
11、-29 15 5.4 ITU-T G.997.1 (2009) Amd. 3 2011-06-22 15 5.5 ITU-T G.997.1 (2009) Cor. 2 2011-10-29 15 5.6 ITU-T G.997.1 (2009) Amd. 4 2011-12-16 15 5.7 ITU-T G.997.1 (2009) Amd. 5 2012-02-13 15 6.0 ITU-T G.997.1 2012-06-13 15 6.1 ITU-T G.997.1 (2012) Amd. 1 2012-12-07 15 6.2 ITU-T G.997.1 (2012) Amd. 2
12、 2013-04-22 15 ii Rec. ITU-T G.997.1 (2012)/Amd.2 (04/2013) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T
13、) 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 Assembly (WTSA), which meets every four yea
14、rs, 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 which fall within ITU-Ts purview, the nece
15、ssary 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 this Recommendation is voluntary. Howeve
16、r, 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 language such as “must“ and the negative e
17、quivalents 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 RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of
18、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 of approval of this Recommendation, ITU
19、 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 TSB patent database at http:/www.itu.int
20、/ITU-T/ipr/. ITU 2013 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.997.1 (2012)/Amd.2 (04/2013) 1 Recommendation ITU-T G.997.1 Physical layer management for digital subscriber line transceivers
21、Amendment 2 1) Updated reference Update reference ITU-T G.993.2 in clause 2 as shown: ITU-T G.993.2 Recommendation ITU-T G.993.2 (201106), Very high speed digital subscriber line transceivers 2 (VDSL2). 2) Addition of parameters to enable the vectoring modes 2.1) Clause 7.3.1.13.9 Add clause 7.3.1.1
22、3.9 7.3.1.13.9 Vectoring mode enable (VECTORMODE_ENABLE) This configuration parameter defines the vectoring initialization type to be allowed by the VTU-O on the line. It is coded in a bit-map representation (0 if not allowed, 1 if allowed), with the following definition: bit 0: initialization in IT
23、U-T G.993.2 mode with neither Annex X nor Annex Y enabled bit 1: initialization in ITU-T G.993.2 Annex X bit 2: initialization in ITU-T G.993.2 Annex Y bit 3: initialization in ITU-T G.993.5 bit 4 to 7: reserved by ITU-T If ITU-T G.993.2 is enabled in the XTSE (octet 8), then at least one of the bit
24、s 0-3 shall be set to 1. NOTE If bit 0 is set to 0, the system is not allowed to operate in any ITU-T G.993.2 modes except those where Annex X, Annex Y or ITU-T G.993.5 are enabled. 2.2) Table 7-14 Modify Table 7-14 as follows: Table 7-14 Line configuration profile Category/Element Defined in: Q- In
25、terface U-C Interface U-R Interface T-/S- Interface . ITU-T G.993.5 specific (Vectoring) Vectoring frequency-band control upstream (VECTOR_BAND_CONTROLus) 7.3.1.13.1 R/W (M) Vectoring frequency-band control downstream (VECTOR_BAND_CONTROLds) 7.3.1.13.2 R/W (M) 2 Rec. ITU-T G.997.1 (2012)/Amd.2 (04/2
26、013) Table 7-14 Line configuration profile Category/Element Defined in: Q- Interface U-C Interface U-R Interface T-/S- Interface FEXT cancellation line priorities upstream (FEXT_CANCEL_PRIORITYus) 7.3.1.13.3 R/W (O) FEXT cancellation line priorities downstream (FEXT_CANCEL_PRIORITYds) 7.3.1.13.4 R/W
27、 (O) FEXT cancellation enabling/disabling upstream (FEXT_CANCEL_ENABLEus) 7.3.1.13.5 R/W (M) FEXT cancellation enabling/disabling downstream (FEXT_CANCEL_ENABLEds) 7.3.1.13.6 R/W (M) XLINGREQds 7.3.1.13.7 R/W(M) XLINGREQus 7.3.1.13.8 R/W(M) VECTORMODE_ENABLE 7.3.1.13.9 R/W(O) . 2.3) Table 7-15 Modif
28、y Table 7-15 as follows: Table 7-15 Support of line configuration parameters per Recommendation Category/ Element ITU-T G.992.1 ITU-T G.992.2 ITU-T G.992.3 ITU-T G.992.4 ITU-T G.992.5 ITU-T G.993.2 ITU-T G.998.4 ITU-T G.993.5 ITU-T G.993.5 specific (Vectoring) VECTOR_BAND_ CONTROLus Y VECTOR_BAND_CO
29、NTROLds Y FEXT_CANCEL_ PRIORITYus Y FEXT_CANCEL_ PRIORITYds Y FEXT_CANCEL_ ENABLEus Y FEXT_CANCEL_ ENABLEds Y XLINGREQds Y XLINGREQus Y VECTORMODE_ ENABLE Y (Note 3) Y Rec. ITU-T G.997.1 (2012)/Amd.2 (04/2013) 3 Table 7-15 Support of line configuration parameters per Recommendation Category/ Element
30、 ITU-T G.992.1 ITU-T G.992.2 ITU-T G.992.3 ITU-T G.992.4 ITU-T G.992.5 ITU-T G.993.2 ITU-T G.998.4 ITU-T G.993.5. NOTE 1 In SNRM_MODE = 3 or 4 (Receiver referred virtual noise), this parameter is only defined for ITU-T G.993.2. NOTE 2 Those parameters apply only to ITU-T G.998.4 when used in conjunc
31、tion with ITU-T G.993.2. NOTE 3 This parameter applies only when Annex X or Annex Y is supported. 3) Add parameters for the data gathering functionality 3.1) Clause 7.3.6 Add clause 7.3.6 7.3.6 Data gathering configuration parameters 7.3.6.1 Logging depth event percentage per event VTU-O (LOGGING_DE
32、PTH_EVENT_PERCENTAGE_Oi) This parameter is the percentage of the data gathering event buffer assigned to event type i at the VTU-O. The ID, i, of the event type is defined in Table 11-43 of ITU-T G.993.2. 7.3.6.2 Logging depth event percentage per event VTU-R (LOGGING_DEPTH_EVENT_PERCENTAGE_Ri) This
33、 parameter is the percentage of the data gathering event buffer assigned to event type i at the VTU-R. The ID, i, of the event type is defined in Table 11-43 of ITU-T G.993.2. 7.3.6.3 Logging depth for VTU-O reporting VTU-R (LOGGING_DEPTH_REPORTING_O) This parameter is the logging depth that is requ
34、ested for reporting the VTU-O event trace buffer in the CO-MIB, in number of 6-byte data gathering records. 7.3.6.4 Logging depth for VTU-R reporting VTU-R (LOGGING_DEPTH_REPORTING_R) This parameter is the logging depth that is requested for reporting the VTU-R event trace buffer over the eoc channe
35、l, in number of 6-byte data gathering records. 7.3.6.5 Logging data report newer events first VTU-R (LOGGING_REPORT_NEWER_FIRST) If true, this parameter instructs the VTU-R to report newer events first, from the beginning of the event trace buffer. If false, this parameter instructs the VTU-R to rep
36、ort older events first, from the end of the event trace buffer. 4 Rec. ITU-T G.997.1 (2012)/Amd.2 (04/2013) 3.2) Clause 7.5.3 Add clause 7.5.3 7.5.3 Data gathering line test, diagnostic and status parameters 7.5.3.1 Logging depth VTU-O (LOGGING_DEPTH_O) This parameter is the maximum depth of the ent
37、ire data gathering event buffer at the VTU-O, in number of 6-byte data gathering records. 7.5.3.2 Logging depth VTU-R (LOGGING_DEPTH_R) This parameter is the maximum depth of the entire data gathering event buffer at the VTU-R, in number of 6-byte data gathering records. 7.5.3.3 Actual logging depth
38、 for reporting VTU-O (ACT_logging_depth_reporting_O) This parameter is actual logging depth that is used for reporting the VTU-O event trace buffer in the CO-MIB, in number of 6-byte data gathering records. 7.5.3.4 Actual logging depth for reporting VTU-R (ACT_logging_depth_reporting_R) This paramet
39、er is actual logging depth that is used for reporting the VTU-R event trace buffer over the eoc channel, in number of 6-byte data gathering records. 7.5.3.5 Event trace buffer VTU-O (EVENT_TRACE_BUFFER_O) This parameter is the event trace buffer containing the event records that originated at the VT
40、U-O. 7.5.3.6 Event trace buffer VTU-R (EVENT_TRACE_BUFFER_R) This parameter is the event trace buffer containing the event records that originated at the VTU-R. 3.3) Tables 7-38, 7-39, 7-40 and 7-41 Add Tables 7-38, 7-39, 7-40 and 7-41 after Table 7-37: Table 7-38 Data gathering configuration profil
41、e Category/Element Defined in clause: Q- Interface U-C Interface U-R Interface T-/S- Interface Data gathering LOGGING_DEPTH_EVENT_PERCENTAGE_Oi 7.3.6.1 R/W (O) LOGGING_DEPTH_EVENT_PERCENTAGE_Ri 7.3.6.2 R/W (O) R/W (O) LOGGING_DEPTH_REPORTING_O 7.3.6.3 R/W (O) LOGGING_DEPTH_REPORTING_R 7.3.6.4 R/W (O
42、) R/W (O) LOGGING_REPORT_NEWER_FIRST 7.3.6.5 R/W (O) R/W (O) Rec. ITU-T G.997.1 (2012)/Amd.2 (04/2013) 5 Table 7-39 Support of data gathering configuration parameters per Recommendation Category/Element ITU-T G.992.1 ITU-T G.992.2 ITU-T G.992.3 ITU-T G.992.4 ITU-T G.992.5 ITU-T G.993.2 ITU-T G.998.4
43、 ITU-T G.993.5 Data gathering LOGGING_DEPTH_ EVENT_PERCENTAGE_Oi Y LOGGING_DEPTH_ EVENT_PERCENTAGE_Ri Y LOGGING_DEPTH_ REPORTING_O Y LOGGING_DEPTH_ REPORTING_R Y LOGGING_REPORT_ NEWER_FIRST Y Table 7-40 Data gathering reporting parameters Category/Element Defined in clause: Q- Interface U-C Interfac
44、e U-R Interface T-/S- Interface G- Interface LOGGING_DEPTH_O 7.5.3.1 R (O) LOGGING_DEPTH_R 7.5.3.2 R (O) R (O) R (O) ACT_logging_depth_reporting_O 7.5.3.3 R (O) ACT_logging_depth_reporting_R 7.5.3.4 R (O) R (O) EVENT_TRACE_BUFFER_O 7.5.3.5 R (O) EVENT_TRACE_BUFFER_R 7.5.3.6 R (O) R (O) R (O) Table 7
45、-41 Support of data gathering reporting parameters per Recommendation Category/Element ITU-T G.992.1 ITU-T G.992.2 ITU-T G.992.3 ITU-T G.992.4 ITU-T G.992.5 ITU-T G.993.2 ITU-T G.998.4 ITU-T G.993.5 LOGGING_DEPTH_O Y LOGGING_DEPTH_R Y ACT_logging_depth_ reporting_O Y ACT_logging_depth_ reporting_R Y
46、 EVENT_TRACE_BUFFER_O Y EVENT_TRACE_BUFFER_R Y Printed in Switzerland Geneva, 2013 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-tel
47、ephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series
48、 K Protection against interference Series L Construction, installation and protection of cables and other elements of outside plant Series M Telecommunication management, including TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Se
49、ries O Specifications of measuring equipment Series P Terminals and subjective and objective assessment methods Series Q Switching and signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protoc
