Broadband Access Network Design

1. Broadband Access Network Design Enrico Mondo Sirti S.p.A. - Design Centre Via Galileo Galilei, 5 - 20060 Cassina de’ Pecchi (MI) - Italy Tel: +39 2 66773865 - Fax: +39 2 66773894 - e-mail: E.Mondo@sirti.it

2. Design workflow The Design Centre’s experience World-wide design Why a Telecommunication Operator needs high quality design and as-builds drawings Conclusions Summary

3. Network data base Design workflow Input: Maps acquisition or digitisation Survey System engineering & Network design Civils design Permits map preparation Bill of Materials Investments evaluation • Criteria • Specifications • Symbology • Forecast Users • Cartography • Existing • infrastructure DESIGN DOCUMENTATION • SIREN (Sirti owned CAD system application) • Workflow Management System

4. Designing on paper leads to slow production, poor quality and problems in design updating Accuracy and precision of digitised maps must be verified during survey SW application must allow both automatic and manual measurements acquisition Map digitisation Maps acquisition/digitisation

5. Survey Survey information includes: • housecounting and MDU internal wiring • definition of entry point to premises • proposed cabinet sites • verification of digital map information • inspection of existing infrastructure • footways and carriageways surface type • poles location and status • Pen-PC can be used to store information on site

6. RF design RF Design includes: • Catchment areas definition • Amplifiers and passives location • Coaxial cable routes • Signal calculation • Powering • Generation of geo-schematics and orthogonal schematics

7. RF Design

8. Copper network design Copper network design includes: • location of DPs and MUXes/ADMs • copper cable dimensioning and route identification • copper joints location • pair assignment

9. Fibre optic design

10. Identification of existing cables and spare fibres Fibre cable routes definition Fibre joints location Fibre assignment Dimensioning of Optical Transmitters/Receivers Signal loss calculation Geo-schematic diagrams Fibre optic design

11. Data loading Choice of MONU type MONU cabinet location according to survey Analysis of existing copper network Identification of copper network adjustments PON design (choice of OLTs, splitters definition and location, optical power budget and ranging calculation,...) PON + ADSL/HDSL/VDSL

12. DECT design

13. Design steps: Draft design Survey Design adjustment Documentation preparation and delivery Identification of RBS/RFP’s sites Complete radio coverage of the area must be guaranteed Use of portable pen-PC essential for handling information DECT Design

14. Civils design

15. Design includes: trench route ducts dimensioning location of pits, chambers and cabinets location of swept-tees overhead infrastructure mains power connection Link to Database Optimisation essential to contain high costs of trench and other civil infrastructures Civils design

16. Bill of Materials • Database link • Automatic generation of complete list of materials for the entire network at any time during design • Automatic cost evaluation of each single area and global • Statistical analysis

17. Design Centre - Milan, Italy

18. Sirti’s Offer Feasibility Studies and Planning Maintenance Telecommunications Networks Design Management Systems Engineering and Networks Construction Procurement

19. Technical Dept. Research Construction Installation Activation SW Development Synergies Design

20. World-wide Design

21. Costs optimisation Database and graphical archives reliability and efficiency Link to Network Management and Billing Systems Network upgrade or changeout Why a Telecom Operator needs high quality design and as-builds drawings

22. Conclusions • We have seen: • what is network design; • Sirti’s Design Centre organisation and experience; • the importance of a good design.