[LINK] NBN Broadband Plan

Tom Worthington tom.worthington at tomw.net.au
Tue Dec 22 18:00:13 AEDT 2009


NBN Co have issued "NBN Co consultation paper: proposed wholesale fibre 
bitstream products" (21 December 2009): 
<http://www.nbnco.com.au/content/upload/files/NBN001_concept_paper_final.pdf>.

Written submissions are invited (by 12 February 2010). Industry Briefing 
Sessions will be held in Sydney and Melbourne, (20 and 29 January 2010). 
The paper is 27 pages of PDF (2.6Mbytes). It is very precisely, but 
clearly written. See my summary: 
<http://www.tomw.net.au/blog/2009/12/nbn-broadband-plan.html>.

There are well executed technical diagrams. Of particular note is the 
diagram for "Fibre Serving Area – Indicative Access Infrastructure" 
illustrating the relationship between Multi Dwelling Units, Internal 
Fibre and Optical Network Termination. The only suggestion for 
improvement I could make is for NBN Co to produce a web version.

Of note:

1. NBN Co plans to provide Ethernet: "It is NBN Co’s view that the Layer 
2 products for mass-market fibre services should be based on Ethernet 
delivery, utilising GPON as the physical access technology. Please note 
that NBN Co has yet to define Layer 2 offers beyond the mass-market."

2. NBN Plans support for voice, video and other QoS sensitive 
applications, with 4 classes of service.

3. A Plain Old Telephone Service (POTS) is being considered with an 
Analogue Telephone Adapter (ATA) integrated within the Optical Network 
Termination (ONT).

4. In its consultation process NBN Co. specifically mentions the 
Communications Alliance: "... NBN Co will continue to collaborate with 
industry as part of the Communications Alliance process."

5. NBN Co intends to support multi-cast protocols, which allows for 
broadcast like services for IPTV and digital radio: "As NBN Co intends 
to deliver a multi-cast capability, some Layer 3 awareness will be 
required within the NBN to support the delivery of IPTV services."


-- 
Tom Worthington FACS HLM, TomW Communications Pty Ltd. t: 0419496150
PO Box 13, Belconnen ACT 2617, Australia  http://www.tomw.net.au
Adjunct Lecturer, The Australian National University t: 02 61255694
Computer Science http://cs.anu.edu.au/people.php?StaffID=140274



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