National Broadband Network – NBN CoBy Nicole Rowland

NBN ConstructionKey Features• Fibre To The Premise—FTTP: (100Mbps) to 90% of premises • Satellite and wireless (12 Mbps) to the remaining 10%• Roll-out over approximately 8 years• 10 million + points of connection• Some 4000 points of connection per day• Direct construction workforce of between 15k to 20k FTEs at the peak of construction

NBN Scale Comparison

Design objectivesCoverage• Consistent network capacity and performance• Consistent design rules with limited flexibility in line with geographic characteristics

Competition• Transparency consistent with equivalence• Wholesale only, open access design• Standardised interfaces

Cost effective• Total cost of ownership perspective• Competitive tender process• Planning for the future incl. clear upgrade path• Adherence to standards

Customer care• Focus on reliability• Modularity to allow flexibility

Diversity in Wholesale Model

Optical Fibre• Optical fibre is a thin glass or plastic strand that carries light along its length• Light is shone from lasers down the fibre and detected by a receiver at the

other end• Light within the fibre does not escape because of cable design• They don’t conduct electricity and thus you can never get a shock and they

are immune to electrical interference.• It is capable of transmitting information at a practically unlimited rate over

tens of kilometres.• Passive Optical Network is a “shared” fibre service used to connect

households - the lasers located in a central location (FAN) and within the ONT at each home.

Physical Infrastructure Representation

NBN Reference ArchitectureEnd User

• Device: Set-top box, Phones, Pc’s• RG router gateway: IP,NAT, Firewall, DNS• Terminal

• ONT/NTU : Ethernet – fibre (ATA)• WNT/SNT : RF modem

Access: Ethernet Aggregation Switchaggregates multiple OLTs at a local exchange site.

Aggregation & Transport: lots of connectionsonto a smaller number of EAS - local to national

Service Edge & Core: connectivity between devices and applications & content via NSP, RSP, ISP

Applications & content: services like health,web-based apps, IP phone, Smart meter, TV

End UserNetwork Terminal Unit• NTU or ONT (optical) / WNT (wireless) / SNT (Satellite)• Terminal configuration depends on service• Ethernet ports (UNI-D), RJ-45 ports(UNI-V)• Each UNI-D is a fully independent interface, • Interfaces supported for UNI-D ports:

• 10/100/1000BaseT/TX (Electrical) • 1000BaseTX (Electrical) • 1000BaseSX (Optical) • 1000BaseLX (Optical)

Access Fibre Structure• Plug and Play – Fibre Distribution Hubs (FDH) are

manufactured with pre-terminated fibre cable stubs, and enable connectorised splitter modules to be easily installed as required according to customer requirements

• Connect up to 2 fibres per dwelling• larger multiports can be plugged in for additional capacity

Network dimensions –replicating modules

Other NBN information• Service is IPv4 and IPv6 compliant, uses DHCP for dynamic assigned

address by retail provider • Multicast compliant – use for broadcast TV and so on• IP address (and other ATA parameters) are assigned via the Wholesale

Provider’s management system. • NBN Co aims to have ownership of all current installed fibre, in the

process of signing an agreement with Telstra and will try to do similar deals with other companies like Optus etc.

• Fibre will provide all phone and internet services to premises and copper wire will likely be removed.

• Stephen Conroy still wants a filter, controversial.• Tasmania hooked up – customers are already claiming speeds that exceed expectations.• Households need to re-wire at own expense?• BBN (Brisbane) project implications