[LINK] NBN domestic installations

[Paul Brooks]

On 3/03/2016 7:04 PM, Andy Farkas wrote:
> On 03/03/2016 16:26, Paul Brooks wrote:
>> On 3/03/2016 4:56 PM, David Lochrin wrote:
>>> But back to domestic _FTTN_ installations...
>>>
>>> Does anyone know whether some form of network termination device is installed?
>> NBNCo do not install any form of NTD or CPE. Ideally your ISP will supply a suitable
>> VDSL2 modem/router, or you will need to procure one yourself.
>
> Yes, let's pass on the cost to the consumer.... thanks malcs
>
> (FTTH: you plug your existing router straight into the supplied NTU)

Not really - I don't hear anyone complaining about buying ADSL1/2/2+ modems for use on
an ADSL line as "passing the cost to the consumer".  Or about buying their own
analogue modem in dial-up days.
And you can only plug your existing router straight in to the NTU if you have a
relatively new one with dual uplink ports, ADSL + Ethernet. The vast majority of the
existing ADSL1/2/2+ modem fleet don't have any Ethernet WAN port, just the DSL port,
so will need to be binned in any case.

The reality is that, like ADSL2+, there is a wide variety of VDSL2 capable modems
available on the market, prices are set low by competition, so it makes sense to
permit the customer to get one that suits their functionality, needs and budget. GPON
NTUs aren't widely available from multiple vendors, aren't a competitive supply, and
largely aren't interoperable between vendors - so it makes sense that it is supplied
as part of the FTTP network service.

(But if you don't like that, you'll LOVE that it looks like the same scenario for HFC
- customer to supply own DOCSIS3/3.1 compliant cable modem!)


>
>> It does need to be one of the models tested and approved by NBNCo to have all the
>> VDSL2 functions and options required - some VDSL2-capable modems on the market do not.
>> Perhaps ask your ISP for a list. They might need to ask NBNCo for the list.
>
> nbn(tm) will *not* tell you which VDSL modems are approved:
>
> <https://delimiter.com.au/2016/01/06/nbn-co-rejects-foi-request-for-basic-fttn-modem-details/>
>
No - but nbn have published a technical specification that details the VDSL2 support
that is required, and they will work with ISPs to test them,  and the community
(Bless-em!) have put together a living list of compatible and tested modems at
http://whirlpool.net.au/wiki/fttn_registered_modem_router. I don't know what derailed
the FOI process, but the technical requirements for the VDSL2 capability are published
in Section 7 of
http://www.nbnco.com.au/content/dam/nbnco2/documents/sfaa-wba2-product-catalogue-nebs-product-tech-spec-fttb-fttn_20150904-to-20151102.pdf.


>
>> There does need to be a central filter/splitter installed on the telephone line to
>> isolate POTS from VDSL2, and reduce noise on the VDSL2 spectrum.
>
> You do not need a splitter. The POTS line will be switched off.
>
> You may not be able to get your existing phone number ported to VoIP.
>
> Thanks malcs.

This is incorrect. You do need a splitter, especially if you will be keeping the POTS
service running, to isolate crappy internal house wiring from affecting the VDSL2
signal. Star-wiring to multiple internal sockets will seriously screw with the VDSL2
signal due to reflections and impedance mismatches at high frequencies. Alternatively,
disconnect all internal sockets.
The POTS line may not always be switched off - NBN and some RSPs are using 'Voice Pass
Through' and maintaining the original dial-tone for a while. It depends on the RSP.
See http://commsalliance.com.au/__data/assets/pdf_file/0004/50548/WC68-IGN-008.pdf,
Section 5.1, and any references to 'VPT' or 'NVPT'.

If you are unable to get your existing telephone number ported to VoIP, thats entirely
the fault of a screwed-up service provider - either your old one, or your new one, not
properly supporting Local Number Portability out or in.
It has NOTHING to do with nbn, and this time nothing at all to do with Malcs.
If your old or new service provider won't port your number, report them to the TIO.


>
>
>> There has also been rumours that NBNCo are doing 'voice passthrough', and the analogue
>> POTS signal will remain on the line and keep the handset connected through to the
>> exchange, so there is no need to move the voice service to a VoIP port on the modem.
>> This is likely to be a temporary measure though.
>>
>
> A lot of homes have 2 pairs of copper running into the house. The idea is that
> you leave the existing active service on the first pair and use the second pair
> for your FTTN service. To do this it will cost you $297.

Nope. You could choose to do this, but would be nuts, and unnecessary. Nothing to do
with Malcs.

Paul.


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