Chorus UBA Specification sheet

Enhanced UBA
Product user guide
Click here to edit Document Version: May 2016
© Chorus 2016

2Add document name here | Sept 2016
Table of Contents
1INTRODUCTION 5
2BENEFITS 5
2.1 Key benefits of Enhanced UBA: 5
3ENHANCED UBA PRODUCT DESCRIPTION 5
4ENHANCED UBA COMPONENTS 7
4.1 External termination point 7
4.2 Enhanced UBA access 7
4.3 Coverage area 7
4.4 Local aggregation path 8
4.5 Handover point 8
4.6 Local handover point 8
4.7 Remote handover point 8
4.8 Handover link 8
4.9 Backhaul 8
5VARIANTS OF ENHANCED UBA 9
6ENHANCED UBA FEATURES 9
6.1 Interleaving 9
6.2 Interleaving settings for Enhanced UBA O 10
6.3 PPPoA modem support 10
6.4 Tail Extension 11
7SERVICE SPECIFICATION TARGETS 11
7.1 Exceptions to service specifications 13
8AGGREGATION AND HANDOVER OF TRAFFIC 13
8.1 Geographic availability 14
8.2 Modem installation 14
8.3 Relationship with other products 15
9HOW ENHANCED UBA WORKS 16
9.1 Class of service design 16
9.2 Enhanced UBA protocol stack 18
9.3 Enhanced UBA Ethernet architecture 19
9.4 Traffic Management 22
9.5 PPPoA modem support 24
9.6 Tail Extension 25
9.7 IP addressing 26

3Add document name here | Sept 2016
9.8 DHCP option 82 features 27
9.8.1 Port ID 27
9.8.2 Port ID mismatch 27
9.8.3 Upstream speed 28
9.8.4 Downstream speed 28
9.9 Service component identifiers 28
9.10 Security 29
9.11 Technical interfaces 29
9.12 End customer interface 29
9.13 End customer interface security settings 31
9.14 Service provider interface 31
9.14.1 Service provider interface for PPPoA modem support 33
9.14.2 Service provider interface security settings 34
9.14.3 Handover links cable standards 34
10 ONBOARDING TO ENHANCED UBA 35
10.1 Prerequisites 35
10.2 Enhanced UBA set-up guide 35
10.3 Coverage area mapping and remapping 36
10.4 Mapping and remapping process service level agreement 36
10.5 Coverage area mapping process 37
10.6 Mapping process charge 37
10.7 Remapping process 37
10.8 Remapping process charge 39
11 ORDERING 39
11.1 Enhanced UBA service requests 39
12 FAULTS 41
12.1 Fault definitions 41
12.1.1 Modem re-sync fault definition 41
12.1.2 Service provider tier 1 testing 42
13 PRICING 43
13.1 Monthly rental 43
13.2 Transaction Charges 43
13.3 Ancilliary charges 44
13.4 Additional services 44
13.5 Tail Extension pricing 44
13.6 Coverage area mapping / remapping charges 44
13.6.1 Coverage area remapping charges 44
14 BILLING 45
14.1 Tail Extension billing 45

4Add document name here | Sept 2016
14.2 Other Chorus services 46
15 CONNECTION AND PREMISES NETWORKING 46
15.1 Connection option tasks 47
16 END CUSTOMER EQUIPMENT REQUIREMENTS 48
16.1 Overview 48
16.2 Key capabilities 48
16.3 CPE requirements 49

5Add document name here | Sept 2016
1Introduction
With Enhanced UBA you can provide your customers with a range of own-branded,
broadband enabled services and applications such as voice over internet protocol (VoIP)
and internet access.
The Basic UBA variant EUBA 0 can be found described in this product user guide.
2Benefits
2.1 Key benefits of Enhanced UBA:
Allows simultaneous delivery of internet and real time grade IP traffic over a
single broadband access.
Is the foundational product for delivery of next generation solutions to the home,
such as video conferencing, home networking and automation, video applications,
improved remote working and home security - all over a single broadband access
to the home.
Is an intermediate input product that can be combined with your network (or
other service) to provide differentiated solutions to your customers.
Can be used as an alternative to the PSTN.
Uses our Ethernet network to deliver fast broadband access.
PPPoA modem support feature enables a smooth transition with no interruption of
service for end customers moving from current generation broadband products to
Enhanced UBA.
Tail Extension feature enables you to build up a local, regional or national
presence without the need to invest or manage dedicated backhaul.
Integrated with handover links to allow you to utilise the same handover links for
Enhanced UBA and High Speed Network Services (HSNS) traffic.
3Enhanced UBA product description
Enhanced UBA is the first in a new family of Ethernet delivered next generation
broadband products, designed to support the simultaneous delivery of two Class of
Service (Cos) streams:
Real time grade IP traffic: delivered as a real time CoS internet grade IP traffic:
delivered as ‘best efforts’ CoS.

6Add document name here | Sept 2016
Enhanced UBA is an intermediate input service that you can combine with your own
network, or other services, to provide a range of own-branded broadband enabled
services and applications such as voice over internet protocol (VoIP) and internet access.
It is designed to serve your customers with either single or multiple access devices such
as computers, consoles or telephones.
Enhanced UBA is available to you exclusively through Chorus.
Enhanced UBA is available nationally where Chorus has deployed ADSL2+ based
technology with terrestrial access and backhaul assets (i.e. it excludes services
supported by satellite and/or wireless access links or backhaul links). Enhanced UBA can
only be provided if your customer’s line speed meets the minimum thresholds required
to deliver the Enhanced UBA service.
The following diagram shows the Enhanced UBA service:
Figure 1: Enhanced UBA Service

7Add document name here | Sept 2016
4Enhanced UBA components
Enhanced UBA is made up of the key components shown below:
Figure 2: Enhanced UBA Service
4.1 External termination point
The ETP is the external termination point for telecommunications services at your
customer's premises. Where there is no termination point external to the premises it is
either the first jack on the premises wiring or the building distribution frame.
4.2 Enhanced UBA access
Enhanced UBA consists of a DSL data connection from the ETP at your customer’s
premises to the DSLAM at the local exchange or cabinet. While Enhanced UBA is
optimised for ADSL2+, it is possible to use ADSL1 modems (see section 11 ‘end
customer equipment requirements’ for more information).
This is a bridged Ethernet connection that requires the use of 802.1q frames with a VLAN
address of 10 and p-bit settings based on the class of traffic (see the section on technical
interfaces for more information). Non-tagged frames will be discarded.
Per end customer traffic policies are enforced in this section of the network. Further
detail on traffic management is provided in section 4.4.
4.3 Coverage area
A Coverage area is the collection of DSLAMs in a geographic area connected to a
handover point. More information on Enhanced UBA coverage is available on the EUBA
page of our website.

8Add document name here | Sept 2016
4.4 Local aggregation path
The end customer traffic from numerous DSLAMs in a coverage area is carried to the
handover point over local aggregation paths.
These paths are dimensioned to support both the best efforts traffic and, separately, the
real time traffic. Real time traffic is strictly prioritised both upstream and downstream to
ensure that real time traffic meets your service specification targets.
4.5 Handover point
A handover point is our first Ethernet aggregation switch (EAS) within a coverage area,
where all traffic within that coverage area is aggregated for handover. You will need a
handover link to receive the traffic.
4.6 Local handover point
In the context of Tail Extension a local handover point is our first EAS in the coverage
area in which the Enhanced UBA access tail is provided.
4.7 Remote handover point
In the context of Tail Extension a Remote handover point is an EAS located in a coverage
area which is not the coverage area in which the Enhanced UBA access tail is provided.
If you don’t have the ability to hand over traffic at the local handover point you can
purchase Tail Extension (or another backhaul service) to take the Enhanced UBA traffic
to a remote handover point that you’ve nominated.
4.8 Handover link
The handover link is an interface between our network and yours. Enhanced UBA traffic
can be handed over only on Gigabit Ethernet interfaces.
4.9 Backhaul
If you don’t have a handover link at the local handover point you can purchase Tail
Extension or another backhaul service, which will terminate on a remote handover point.
Local traffic and traffic from remote coverage areas may be handed to you at the same
handover point.
More information on Tail Extension is available in section 4.6.

9Add document name here | Sept 2016
More information on backhaul options is available on the secure section of Chorus’s
website http://customer.chorus.co.nz/backhaul.
5Variants of Enhanced UBA
Enhanced UBA operates at FS/FS, which is the maximum speed that the DSLAM can
support on the end customer’s line (whether upstream or downstream). Actual speeds
may vary, depending on factors such as CPE and wiring, your environment, volume of
traffic, end customer location and network congestion.
It has four variants provided under the terms of the UBA STD:
•Best efforts only
•EUBA 0kbps
oBest efforts
•EUBA 40kbps
oEUBA 90kbps
oEUBA 180kbps
The real time bandwidth allowance is designed to support industry standard VoIP codecs,
including protocol overheads such as RTP, UDP, IP and Ethernet.
For example Enhanced UBA 40 is suitable for G.729 Annexes A,B,C,D,E,F,G,H,I at 10ms
or higher packetisation rates. Enhanced UBA 90 is suitable for G.711 codec.
All four variants of Enhanced UBA can be provided with a voice service, such as
Baseband. However, the Baseband Copper and Baseband IP services are not provided as
part of the Enhanced UBA service and are as defined in the Baseband Service Description
and product user guide.
6Enhanced UBA Features
Enhanced UBA has three optional features:
6.1 Interleaving
For each Enhanced UBA variant ordered you will elect whether that connection will be
provisioned with interleaving HIGH, interleaving LOW or interleaving OFF.

10 Add document name here | Sept 2016
The default setting for Enhanced UBA is to have interleaving set on HIGH. This setting
will incur an interleaving delay of downstream 16ms/upstream 0ms, as described in
section 3.4.
Data interleaving is a technique defined as part of the ADSL2+ standard that increases
the tolerance of line noise at the expense of some one-way packet delay. Your
customers can ask you to have interleaving set on LOW or OFF.
With interleaving set on LOW or OFF there may be a reduction in latency, therefore you
who offer latency sensitive applications may opt to have interleaving set to LOW or OFF.
However, the service may now be more susceptible to line noise that may cause your
customer to believe your service is faulty.
You’ll be responsible for evaluating if the fault is attributable to interleaving being set to
LOW or OFF, and if so for remedying this.
Interleaving OFF is intended to provide compatibility with Basic UBA. All three
interleaving options can be used with the PPPoA modem support feature.
6.2 Interleaving settings for Enhanced UBA O
The Enhanced UBA 0 and Basic UBA line profiles that are configurable through the
interleaving settings are aligned to provide a seamless user experience and a smoother
migration to next generation broadband products. The minimum line speed required to
support Enhanced UBA 0 and Basic UBA is set at 64Kbps.
For Enhanced UBA 0 only - when choosing the three Interleaving settings available,
HIGH, LOW and OFF, the you will get the following line profiles:
oInterleaving HIGH (default setting on Enhanced UBA0): When an order is
placed for Enhanced UBA 0, the default setting of HIGH applied, which
corresponds to a Basic UBA normal profile combination at 64Kbps line sync
threshold.
oInterleaving LOW: If you choose interleaving LOW, you will get a Basic UBA
Fast profile at 64Kbps.
oInterleaving OFF: If you choose interleaving OFF, you will get a Basic UBA Fast
profile with 64Kbps.
Note: for EUBA 0 the LOW and OFF provide the same setting, which is aligned with Basic
UBA.
6.3 PPPoA modem support
PPPoA modem support is a feature, available on all Enhanced UBA variants, that allows a
modem configured for Basic UBA to be connected to an Enhanced UBA tail and deliver a