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Telecommunications

Telecommunications. Bernie O'Donnell. Introduction/Agenda . Technical Overview of Telecom Principles Current Trends Changing Environment Selection Criteria. Definition: Telecommunications Systems.

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Telecommunications

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  1. Telecommunications Bernie O'Donnell

  2. Introduction/Agenda • Technical Overview of Telecom Principles • Current Trends • Changing Environment • Selection Criteria

  3. Definition: Telecommunications Systems “...equipment and transmission facilities, either alone or in combination with information systems, for the electronic distribution of all forms of information, including voice, data, and images.”

  4. Technical OverviewBasic Communication Requirements • Transmitter • Receiver • Medium • Code • Protocol

  5. Technical OverviewElectronic Communication Requirements • Transmitter - Create or modify signal • Receiver - Sense signal or modifications • Medium - Carry signal • Code – Agreed upon language • Protocol – Rules of communication

  6. Technical OverviewInformation Carrying Capacity • Number of signal transitions • Convey maximum information per unit of time

  7. Technical OverviewImpediments to Communication • Wireless - Interference, Signal Impediments • Wired - Interference, Resistance

  8. Technical OverviewFrequency Spectrum

  9. Current Trends • Carrying Analog Signals (Audio, Video) over Digital Networks • Better Efficiency, but Poorer Voice Quality - Does it Matter?

  10. Current TrendsVoice over IP (VoIP) • Voice and Video Traffic: Timing More Important Than Accuracy • Data Traffic: Accuracy More Important Than Timing • Expecting a “Best Effort” Network to Deliver Timing-Dependent Traffic

  11. Current TrendsVoice over IP (VoIP) • “Free” Service Over LAN/WAN? • Single Cable/Single Network • Fixed Monthly Service Rates • Reliability? • Security? • Internet Versus Intranet

  12. Current TrendsVoice over IP (VoIP) • Network Health Assessment: • Enable Quality of Service (QoS) to Prioritize Voice and Video Traffic • Evaluate Current Performance: Delay and Jitter (Variable Delay) • Evaluate Failure Scenarios: Redundancy • Evaluate Current Traffic

  13. Current TrendsVoice over IP (VoIP) • Total Bandwidth Used Should Be At 70% For Voice and Data (Maintain Headroom) • When At 80% Look At Upgrading • Requires Management and Monitoring • Management Implications: Self Service? • E-911 Considerations

  14. Current Trends Messaging Overload Mobile Convergence & Mobile Device as Primary Service Managed Services

  15. Current TrendsPresence/Unified Communications • View of the Enterprise/Global Presence • First Call Resolution • Integration with Outlook Contacts and Calendar • Mouse/Keyboard Activity Detection • Contact List Views

  16. Current TrendsPresence/Unified Communications • Virtual Contact Center • Enhanced Mobility - Softphone/Cell • Selective Access To Integrated Cell • Ad Hoc Conferencing • Return Notification Screen Pops

  17. Changing Environment Regulatory Environment Telecom Service and System Providers Technologies and Standards Application Demands Broadband Availability

  18. Selection Criteria • High Service Levels Expected • Cost Control and Predictability • Efficiency • Flexibility/Scalability • Security • Refresh Cycles?

  19. Where To Get More Information • The Essential Guide to Telecommunications 4th edition, Annabel Z. Dodd • Federal Communications Commission fcc.gov • NetworkWorld.com

  20. Final Questions?

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