1. Chapter 12 The Network Development Life Cycle
Critical success factors
Analysis and Design
Implementation
LAN
Voice Design

2. Critical Success Factors
Identification of all potential users
Political awareness
Buy-in
Communication
Detailed project documentation
Process/product awareness
Be honest with yourself

3. Attitude If it isn’t broken, don’t fix it Baseline data
Learn from other’s mistakes
Don’t be afraid to admit mistakes

4. Analysis and Design Phases
Request
Feasibility Study
Analysis (requirement)
Alternatives (cost and benefit)
Design
Selection
Cost
Documentation
Management approval

5. Implementation Phases
Purchasing and vendor agreement
Installation
Training, and testing
Conversion
Follow up

6. Request Source Form: formal or informal Evaluation criteria
User
Senior managers
Communication department
external environment
Form: formal or informal
Evaluation criteria
Prioritization (costs & benefits analysis)
Outcome: approval, deny, or on hold by management

7. Feasibility Study
Identify business objectives, functional areas, processes
Team
User, specialist, and management
Problems
Technical or non-technical
Analysis (technical, operational, economical, legal, schedule)
Report and presentation
Go or stop

8. Analysis Geographic requirement (scope) Traffic load analysis
Payload type
Peak load & average load (no. of message and length)
National & international busy hour
Traffic flow pattern by individual location (map)
Response time, reliability, & availability (cost)
Security
Protocol
Circuit analysis and configuration alternatives
Network hardware analysis and alternatives
Growth
Constraint: time, cost, and compatibility

9. Analysis Documentation
Input-process-output model (hardware configuration)
Traffic analysis report
Circuit configuration alternatives diagrams (bandwidth)

10. Design Hardware & software requirement Circuit design diagram
Performance
Routing time (peak and average)
Response time (peak and average)
Delay consideration (queue)
Communication service requirement
Personal requirement
Other facilities

11. Analysis & Design Tools Selection
Tariff databases
Response time calculation
Multiple transport protocols
Multiple topologies
Circuit design
Financial
Input/output
Operating platforms
Product library
Design validation

12. Simulation Tools Selection
Network type
Network scope
Network services
Network devices
Network protocols
Data traffic attributes: bursty, batch, real-time
Traffic data entry
User interface
Presentation: performance or math calculation

13. Final Proposal Contents: Formal presentation (sell)
Budget
Timetable
Project detail: analysis & design
Formal presentation (sell)
Stop or go: in-house or outsourcing

14. Outsourcing Request for proposal (RFP) or request for quotation (RFQ)
Selection criteria and its weight

15. Request for Proposal Title Table of contents
Description of organization
Problem definition
Operation requirements
Format of response
Evaluation criteria
Decision schedule
References

16. Description of Organization
Organization chart
Organization locations
Overview of system

17. Problem Definition Performance Security throughput Response time
Error rate
Misrouting
Security

18. Operation Requirements
Reliability
Down time
Misrouting
Lost message
Transmission error
Performance
Throughput
Response time
Error rate

19. Format of Response - I Title Table of contents Overview Software
Hardware
Performance (future growth)
Site requirement
Conversion (installation, testing, & schedule)

20. Format of Response - II Maintenance (support) Costs Warranty Coverage
User Training
References
Other related information

21. Selection criteria Proposed solution -percent-of-fit goal
Compatibility
Security and backup
Price
Technical support
Product maintenance
Repair service
Financial viability

22. Documentation Diagrams and maps Components list
Configuration and wiring
Components list
Hardware: model and specification
Software: version, release, no. of copies
Implementation plan (Gantt chart)
activities
Schedule

23. Management Approval Review and verification Management: budget Users
Operators
Management: budget

24. Implementation
Purchasing
Testing
Training
Conversion

25. Purchasing Vendor agreement Get a experienced lawyer
Equipment configuration specification
Acceptance test
Schedule: delivery, installation, testing, operation
Location: delivery, installation, testing, operation
Other terms and conditions: payment, warranty, maintenance
Get a experienced lawyer

26. Training Types of instruction Educating Security and backup Classroom
Hand on
In house
Outside
Educating
Users
Operators
Maintenance crew
Security and backup

27. Testing Testing time Testing Tools Testing areas Software & hardware
IBM’s Telecommunication Network Simulator
Testing areas
Performance
Stress testing (load)
Error handling
Error recovery procedures

28. Conversion Types Help desk Vendor technicians or consultants Parallel
Cut over
Pilot
Piece by piece
Help desk
Vendor technicians or consultants

29. LAN Design Number of nodes Usage Traffic: day and time Disk storage
Speed
Security and backup
Compatibility
Management

30. Voice Network Design Peak load and average load Holding time
Overdesigning or delay
Number of circuits
Queuing capability

31. Assignment Review chapters 8-12 Read chapter 13
Work on individual & term project