User Network Interface DSL

1 This document does not form part of any Wholesale Broadband Agreement or any Standard Form of Access Agreement for the purposes of Part XIC of the Competition and Consumer Act 2010 and does not vary any rights or obligations of a party under a Wholesale Broadband Agreement. User Network Interface DSL Network Interface Specification 2020 nbn co limited | ABN 86 136 533 741 Page 2 of 27 Network Interface Specification UNI-DSL Uncontrolled when printed User Network Interface DSL Network Interface Specification Version Description Effective Date First issued version of WBA 4 1 December 2020 Copyright This document is subject to copyright and must not be used except as permitted below or under the Copyright Act 1968 (Cth).

2 You must not reproduce or publish this document in whole or in part for commercial gain without the prior written consent of nbn. You may reproduce and publish this document in whole or in part for educational or non-commercial purposes as approved by nbn in writing. Copyright 2020 nbn co limited. All rights reserved. Not for general distribution. Disclaimer This document is provided for information purposes only. The recipient must not use this document other than with the consent of nbn and must make its own inquiries as to the currency, accuracy and completeness of this document and the information contained in it. The contents of this document should not be relied upon as representing nbn s final position on the subject matter of this document, except where stated otherwise.

3 Any requirements of nbn or views expressed by nbn in this document may change as a consequence of nbn finalising formal technical specifications, or legislative and regulatory developments. Environment nbn asks that you consider the environment before printing this document. 2020 nbn co limited | ABN 86 136 533 741 Page 3 of 27 Network Interface Specification UNI-DSL Uncontrolled when printed Contents 1 About this document .. 5 Classification of Network attributes .. 5 Status .. 6 2 UNI-DSL Physical Interface .. 7 UNI-DSL Interface Modes .. 7 Modem Compatibility / Registration .. 7 UNI-DSL Specification .. 8 DSLAM Chipset and Firmware .. 8 DSL and OAM Features .. 8 Modem Performance Requirements.

4 14 Minimum Modem Quality Standards .. 15 TR-114 Pass Criteria .. 15 TR-249 Pass Criteria .. 16 Central Splitter / Filter .. 17 Ethernet frame support .. 17 3 UNI-DSL Ethernet Frame .. 18 Frame Format .. 18 MAC Address Limitations .. 18 UNI-DSL Addressing Modes .. 19 Frame Tagging VLAN Structure .. 20 Tag Protocol Identifier (TPID) Formats .. 21 EtherType .. 21 Frame Addressing Frame 22 Frames Size Maximum Layer 2 Frame Size5F5F5F5F .. 23 4 Class of Service (CoS) .. 25 Priority Identification .. 25 Priority Encoding (Ingress) and Decoding (Egress) .. 25 Unmarked (Default-Mapped) .. 25 DSCP (DSCP-Mapped) .. 26 2020 nbn co limited | ABN 86 136 533 741 Page 4 of 27 Network Interface Specification UNI-DSL Uncontrolled when printed PCP (Priority-Tagged and Tagged).

5 26 Figures Figure 1: Untagged and Single-Tagged Ethernet Frames .. 18 Figure 2: C-Tag Structure (4 Bytes) .. 20 Figure 3: Definition of Maximum Layer 2 Frame Size (UNI-DSL, Default-Mapped and DSCP-Mapped Mode) .. 23 Figure 4: Definition of Maximum Layer 2 Frame Size (UNI-DSL, Priority-Tagged and Tagged Mode) . 23 Tables Table 1: Mandatory DSL and OAM Features .. 8 Table 2: Modem VDSL Performance Requirements0F0F0F0F .. 15 Table 3: Summary of minimum modem quality standard tests .. 15 Table 4: Rate adaptive performance tests for BA17ade with dpbo and UPBO, retransmission disabled.. 16 Table 5: Rate adaptive performance tests for BA17ade with dpbo and UPBO, retransmission enabled .. 16 Table 6: TR-249 Pass Criteria.

6 17 Table 7: AVC Addressing Modes at the 19 Table 8: C-Tag C-VID Requirement at the UNI-DSL .. 20 Table 9: TPID (UNI-DSL) Requirements .. 21 Table 10: Supported EtherType on a Tagged Ethernet frame .. 21 Table 11: UNI-DSL Frame Forwarding Details .. 22 Table 12: Layer 2 Maximum Frame Size for nbn Ethernet (FTTB) and nbn Ethernet (FTTN) .. 24 Table 13: UNI-DSL Addressing Mode Marking Scheme .. 25 Table 14: DSCP Setting for UNI-DSL DSCP-Mapped Addressing Mode .. 26 Table 15: PCP Setting for UNI-DSL DSCP-Mapped Addressing Mode .. 27 2020 nbn co limited | ABN 86 136 533 741 Page 5 of 27 Network Interface Specification UNI-DSL Uncontrolled when printed 1 About this document In this document: Major Attributes are identified with a thick red border; Minor Attributes are identified with a thick blue border; Major and Minor Attributes in tables are identified by an associated cell within the table marked as either Major or Minor; Important information is identified with a thin black border with gold background and prefixed with the word Important ; and all other attributes are Unsupported Attributes.

7 Any feature, parameter and/or behaviour of nbn Infrastructure which is not included in a Network Interface Specification is an Unsupported Attribute. Classification of Network attributes nbn may, in its absolute discretion, identify or re-classify any attribute of the nbn Network in accordance with clause (a) of the Head Terms. Each attribute of the nbn Network may be classified as one of the following: Classification Description Major A Supported Attribute necessary for using a Product. Customer is expected to make use of the attribute as an input into Customer Products. Any Upgrade to such an attribute is anticipated to: require Customer to take particular action to continue to use a Product after the implementation of the Upgrade; result in a Product no longer being supplied by reason of the Upgrade; or require Customer to commit material capital expenditure in response to implementation of that Upgrade.

8 Minor A Supported Attribute necessary for using a Product. Customer is expected to make use of the attribute as an input into Customer Products. However, any Upgrade to such an attribute is not anticipated to be a Major Upgrade. Unsupported An attribute that is not a Supported Attribute and which need not be relied upon to use a Product. Customer should be resilient to changes to such an attribute. 2020 nbn co limited | ABN 86 136 533 741 Page 6 of 27 Network Interface Specification UNI-DSL Uncontrolled when printed Classification Description Customer should not assume or rely upon specific Network behaviour in connection with such attributes. Customer should consider these facts when connecting to any nbn Infrastructure, using a Product and constructing, configuring and supplying Customer Products.

9 The Network attribute descriptions above do not define the Upgrade process that will apply in respect of Upgrades to those attributes. For that information, see clauses C13 and C17 of the Head Terms. Customer must not rely on the currency of the descriptions of any Unsupported Attributes in any Network Interface Specification, which may change with limited or no notice or update to the Network Interface Specification. Important information is provided to Customer where this information relates to how a Customer Network must be configured to use a Product or where failure to observe a limitation will result in the Product not performing to specification. Status This document does not form part of any Wholesale Broadband Agreement or any Standard Form of Access Agreement for the purposes of Part XIC of the Competition and Consumer Act 2010 and does not vary any rights or obligations of a party under a Wholesale Broadband Agreement.

10 This document refers to and is to be read subject to the terms of the nbn Ethernet Product Module of the Wholesale Broadband Agreement. 2020 nbn co limited | ABN 86 136 533 741 Page 7 of 27 Network Interface Specification UNI-DSL Uncontrolled when printed 2 UNI-DSL Physical Interface UNI-DSL Interface Modes Section (a) of the nbn Ethernet Product Description and section of the nbn Ethernet Product Technical Specification outline the product attributes of the UNI-DSL Product Component, including that the UNI-DSL is a VDSL2 Interface in alignment with ITU-T (01/ 15) and supporting standards. For UNI-DSL services it is Customer's responsibility to provide a VDSL2 modem, as outlined in section Modem Compatibility / Registration Important: The registration process consists of a self-certification, executed by Customer, followed by a registration of the self-certification by Customer to nbn.