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Infinera’s Photonic Integrated Circuits

appreciating the benefits and issues the build will impose on its nation. We also want to help educate consumers, our industry and the general public

about some of the benefits and issues of the NBN build.

Below lists discussion points to help better understand the NBN build, the technology discussions, and issues.

Q1. Will the NBN cost 43 Billion dollars?

Q2. Why do we need a national broadband network?

Q3. Why can’t the NBN be built using wireless technologies?

Q4. Fibre versus wireless?

Q5. What about new wireless technologies claiming to be equivalent or a replacement to fibre?

Q6. What Is the capacity of fibre?

Q7. What are the benefits of fibre?

Q8. The NBN build should be technology agnostic?

Q9. Can I choose my own UPS and NTU?

Youtube video Myth busting the NBN

Infinera’s Photonic Integrated Circuits Q1. Will the NBN cost 43 Billion dollars? According to information available on the NBN Co Ltd web site, the Australian Government originally commited $43 billion, although on the 20 December 2010 NBN Co announced through its corporate plan that the total capital expenditure for the project is estimated to cost $35.9 billion. The government expects to contribute 27.5 billion in equity for the roll out. Q2. Why do we need a national broadband network? The are huge benefits a national broadband with high speed broadband access can deliver. There are many services, businesses, applications and people which need high speed broadband access today. For example, schools both local and remote, health services, the elderly, business will increasignly benefit from high speed internet delivered by the NBN. Many submissions to the Parliment of Australia House of Representatives identifies the benefits and requirements for the NBN build. Q3. Why can’t the NBN be built using wireless technologies? There isn’t much usable radio spectrum available across the country to reasonably service the population at the speeds offered by NBN. To achieve the throughput offered and allow capacity for improvements would require industry to give up most of the utilised radio spectrum for a national company to use it to deliver broadband. Fibre is still required to provide back-haul to all the wireless base stations anyway to achieve maximum spectrum efficiencies. More base stations would be required to serve users. There is already much controversy about the deployment of base stations, which is a major concern to the community. Femtocell technology also another feasible option is a mini mobile phone base station installed in the premise. However the most efficient way to deliver data to the Femtocell would be through cabling being either copper or fibre in Australia. Q4. Fibre versus wireless? Fibre is a complimentary technology to wireless. In general cabling technologies should not be viewed as an opposition technology to wireless technologies as the two have inherent benefits and limitations. Cabling technologies such as fibre provides the much needed capacity, which is used to deliver data to mobile phone base stations, is used as back-haul across the country delivering high speed broadband throughput to meet demand, is used to connect countries together to deliver digital services, and fibre is run over great distances with the use of repeating equipment in excess of 50 Km distances (for example Xtera submarine fibre cabling). Wireless technologies were used to connect Tasmania to mainland Australia after failing attempts in using copper cabling technologies. Recent fibre deployments from mainland Australia to Tasmania in 2006 has provided the much needed capacity to Tasmanians to obtain decent broadband speeds in order to adequately engage with the rest of Australia and the world. Wireless technologies have inherent benefits in providing portability and mobility to users. High throughput is achieved by re-using the same frequency band over and over again geographically which can be delivered via fibre back-haul. In the premise wireless and cabling technologies work in unison in delivering data and digital services to the end user through a range of different technologies such as Broadband over power line (BPL), Ethernet, WiFi, Bluetooth, Zigbee, and Ultra-wideband. Wireless is generally the last hop in the service delivery chain for certain services and devices enabling portability in the premise. Telstra use fibre for back-haul to improve service delivery and reduce infrastructure cost across the country. From personal experience, prior to Telstra using fibre in their networks, telephone calls for example from Melbourne to Perth had echo issues, sound delays etc. Q5. What about new wireless technologies claiming to be equivalent or a replacement to fibre? There will be many claims from certain entities suggesting that their latest wireless solution will be a better fit than fibre to the premise. These wireless solutions will achieve spectrum efficiencies by using technologies such as multi input and multiple out (MIMO) radio transmission technologies, beam forming technologies, spatial multiplexing , single frequency duplexing, and combinations of these technologies. Some claim technologies such as DIDO will be the answer NBN should be built on. Simply the wireless technologies will improve on spectrum use, but maximum efficiencies will be realised when fibre back-haul is used to connect to these devices. Q6. What Is the capacity of fibre? The capacity of fibre is currently limited by the electronics at each end. Unlike the capacity of copper which is arguably reached, emerging copper transmission technologies are not achieving anything comparable to the speeds achieved with fibre. Throughput across copper is also affected by the inherent interference issues and attenuation properties suffered by the physical electrical properties of copper. Some claim that copper is comparable to fibre, but in their demonstrations they use multi-core cabling systems or bundles of data cables which is not a true comparison of the speed achieved across a single fibre core. The fastest speed achievable across cable commercially is measured in Gigabits per second. Current fibre transmission technologies are reaching 26 Terrabits per second which is limited by the electronics at each end, demonstrated by Karlsruhe Institute of Technology- Germany. Q7. What are the benefits of fibre? Fibre unlike copper is electrically inert. Fibre cabling is not affected by interfering electrical or radio emissions or lightening. The capacity of fibre is currently limited by the electronics at either end, allowing fibre infrastructure to be continually re-utilised with new and emerging utlra high speed optical transmission technologies of the future. When photonic circuits replace electronic circuits, greater speeds will be achived again. Fibre to the premise infrastructure as currently being rolled out by the NBN Co will future proof the delivery of current and future digital services. Unlike the recent Hybrid Fibre Coax systems, which have only achieved close to 20 years, it has reached capacity, is electrically prone to many elements including lightening, it excludes many suburbs in highly populated areas, and has been excluded from new developments since the year 2000. For example, the Botanica Park estate developed in Melbourne’s Northern suburb 1999-2000 were excluded from the HFC roll-out. A large utilised portion of the radio frequency spectrum can be sampled and transmitted across across fibre. Generally from 0 to 1 Terrahertz covers the majority of spectrum utilised for most radio communications excluding optical transmission above 1 Terraherz. By applying the Nyquist-Shannon sampling theorem, a 1 Terrahertz radio spectrum ranging from 0 to 1 Terrahertz is sampled at a rate of 2 Terrahertz. By using 8 bit quantisation, will generate 16 Terrabits of data per second, add a transmission protocol to the data stream, and the radio spectrum is now sampled and transmitted across fibre. Currently this is arguably impossible with copper! Q8. The NBN build should be technology agnostic? Being technology agnostic can implicate that any technology should be used to build the NBN. In other words, it is a fancy way of saying the NBN should be built with many underlying technologies and the network provider should be agnostic to the technologies deployed as part of the network. There are major benefits and pitfalls in a technology agnostic NBN. The benefits allow competing industries to apply current and developing technologies to be used as part of the NBN build. Therefore current infrastructure such as copper cabling and wireless systems be utilised. The pitfalls will emerge from the communities whom will be left with poorer communications technologies delivering slower broadband speeds than fiber serviced areas. The current telecommunications systems today is built on a mix of technologies with a large portion of Australians unable to benefit from decent broadband speeds, or restricted to one service provider. There are many providers today supplying different technologies delivering telecommunications services via Wireless, Satellite, Coaxial, and twisted pair copper cabling. Unfortunately current twisted pair cabling doesn’t provide broadband speeds meeting consumer demand in many local inner city suburbs and towns. The HFC broadband speeds also vary, with users dissatisfied with their internet cable performance. Q9. Can I choose my own UPS and NTU? No. Currently users have no choice, NBN Co supply three defined solutions to cater for fibre, wireless, and satellite. NBN Co Fibre access service, Wireless access service, and satellite access service model. There are concerns about the one size fits all NTU and UPS solutions for the entire rollout of the NBN build. NBN Co is only providing the current NTU and UPS solutions for the NBN build, which may be placing limitations and barriers to the many Retail Service Provider industries whom require increased performance for the services they supply to the end user. According to the ASIAL report, the security Industry raised real concerns with the original UPS performance only providing up to five hours of reserve power to the two phone ports, which is not a fit for purpose solution during a mains power failure. Further developments in alarm monitoring technologies utilise IP-based monitoring of security systems which there is no battery backup service currently provisioned by the current NTU. Therefore wireless redundancy paths are absolutely essential. The NTU should be provisioned to supply backup power to the data ports as well. Recent reports indicates the UPS battery backup may supply up to 8 hours reserve power, according to an itWIRE report, but is that enough? ASS2201.1 2007 requires up to 16 hours in certain establishments. Security monitoring is only one aspect, with other industries servicing the elderly, or home out patients require better performance from the UPS with longer power reserve times. The NBN Co could allow manufacturers to supply third party products such as UPS’s and NTU’s with the current NBN Co models offered as the minimum requirement for the end user. Third party manufacturers can build the UPS and NTU devices as enhancements whilst meeting minimum performance specifications established by NBN Co. Additional features required can be added to the third party NTU’s and UPS’s utilised by the retail service providers supplying services to the end user. For example, a UPS with 24 hour battery reserve and solar power integration may be a solution for certain establishments including rural and remote areas. Multiport NTU’s serving certain business or multi dwelling establishments requiring either more than two ATA ports, or more than the four data ports may be a better option in place of accessing and installing NBN Co’s current equipment solution. Further developments may allow RSP’s to supply NTU’s with 3G, LTE, and WiMax redundancy paths for voice and data communications. A further development may allow for third party NTU’s equipped with other radio technologies such as Zigbee to communicate with in-premise devices and utility devices such as smart meters for water, gas and electricity. Currently it is difficult for utilities to connect to the NBN Co NTU due to the expense and difficulty in installing cabling infrastructure required to connect the utility meter to the NTU. A Zigbee wireless interface integrated in the NTU may become a viable option in the future allowing future deployments of smart meters to connect. The proposed concept of allowing third party devices to be purchased and professionally installed by the user on the network side is not new idea. The current PSTN system we have today demonstrates third party purchased and installed devices by the end user and have been accepted by the carriage service provider, which includes NTD’s, and point of entry boxes with integrated ADSL splitters. Traditionally the carriage service provider managed the phone network end-to-end which included the line and telephone handset in the premise. Now the majority of telecommunications cabling in the home to an established demarcation point defined as the network boundary is now defined as customer cabling. Both the customer cabling and equipment defined as customer equipment in the users home is increasingly the responsibility of the home owner to manage.