1 / 30

Future Applications of Voice Over IP – Challenges & Obstacles

Future Applications of Voice Over IP – Challenges & Obstacles. Joe Rinde 4 September, 1997. Technology Implications. The Future of Voice Over IP Is a New Way to Communicate The Future Is Not in Cheaper Voice A Way to Communicate As Different From Telephone As Telephone Was From Telegraph.

jaime-sandoval
Télécharger la présentation

Future Applications of Voice Over IP – Challenges & Obstacles

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Future Applications of Voice Over IP – Challenges & Obstacles Joe Rinde 4 September, 1997

  2. Technology Implications • The Future of Voice Over IP Is a New Way to Communicate • The Future Is Not in Cheaper Voice • A Way to Communicate As Different From Telephone • As Telephone Was From Telegraph

  3. All Or Nothing? • Future Communications Will Use • Packet Switching • And Circuit Switching • Both Will Be Used to Deliver Integrated Services • Users Will Benefit by Receiving the services they want Paying the Lowest Possible Price for Services

  4. Single or Multiple Lines? • Should All Services be on a Single Line? • Sometimes • The Provision of Services • Independent of Network • In the Most Cost Effective Manner • In a Given the Situation • Sometimes That Means a Single Line • Sometimes It Means Multiple Lines

  5. Internet PSTN Classic View of Telecom

  6. Internet IP Ethernet PBX POTS PSTN New View of Telecom

  7. Vault • A Marriage of : • Packet Switching • And Circuit Switching • Under the Canopy of Intelligent ServicesTo Allow the Provision of Services Across Whatever Network Is Appropriate at the Time Users Should Not Be Concerned With Networks Users Should Be Free to Focus on Services

  8. Intelligent Services Signaling Signaling User Profiles Circuit Switching Packet Switching Gateways Vault Components

  9. Applications • Command and Control • Fax • Voice • Collaborative Multi-Media

  10. Cost Savings • Confused Comparisons • Price of PSTN vs. Cost of IP • Creates a Warped View of Relative Costs • Tariff Basis • By the Minute vs. By the Month • Regulatory Issues • Access Charges / Accounting Rate • These Discrepancies Will Normalize Over Time Eliminating the Arbitrage Opportunity

  11. Voice Over IP • Phone to Phone Internet Telephony • Not Economic Domestically on a Dial in Basis • Domestic Long Distance Is Already Low Priced • Internet Telephony Needs GatewaysWhich Are a Major Cost of the Service

  12. Voice Over IP • Applicable Internationally Where Prices Are High • Based on the Recent WTO Agreement This Arbitrage Opportunity Will Diminish Over the Next 2 Years • Who Will Use International Voice Over IP? • Bandwidth Is Limited, So Delays Will Exist • Who Will Pay for Additional International Bandwidth • Consumers May Tolerate It, but Business Won’t • A Viable Alternative for Intracorporate Calling

  13. Intracorporate Phone Calling • Uses Existing LAN and WAN Infrastructures • Can Interface to a Existing PBX • Callers Use Standard Hand Sets • Selection of PSTN or IP Made Dynamically by the PBX • Use of IP Is Transparent to the User • Hopefully

  14. Intracorporate PC Calling • PCs on LANs Are Always On-Line • A Single Phone Call Adds »10 Kbps Half Duplex • Only 0.3% Of a T1 • Very Low Incremental Cost • Add Calls to and From the PSTN via the PBX • Cable Modems or xDSL Technology May Bring This to the Home

  15. Fax • Store and Forward Fax via the Internet • Real Time Fax via the Internet • Store and Forward Can Be Used As a Mail Box • Part of a Universal Mail Box • Can Be Used As Follow Me Service

  16. Collaborative Multi-Media • Communication As Different From Telephone • As Telephone Was From Telegraph

  17. Applications • Road Warrior • Hotel Room With a Single Line • Voice Activated Web Page • Sales • Tech Support • Multi-Media Conferencing

  18. Marriage of Media Video Phone Is Only the Start • Shared White Board Is Fundamental • Shared Applications -- • Internet Conference • NetMeeting • Multi-Way Conferences • More Effective Meetings • More Frequent Meetings • More Usage of Communications

  19. Nowhere Is It Written That Voice Must Pass Over the Internet How To Transport Voice • There Is No Single Answer • Circuit and Packet Switching Will Both Be Used • There Is No Reason Why a PC Can’t Coordinate a PSTN Call With Shared Applications Over the Internet A PBX Can Decide How Phone Calls Will Be Routed A PC Can Do the Same!

  20. Usage • Ease of Use Will Lead to More Use • Impromptu Meetings • No Advance Setup Required • Drop in on a Colleague Across the Globe • Knock on His Virtual Door for a Chat • Call in a Colleague at a Third Location to Consult • Today We Are Limited to a Building • To a Single Floor • We Will Have More Informal Meetings

  21. Impact Of Voice Over IP • Not Just a Shift of Usage • Circuit Switching Use Will Continue • Packet Switching is an Additional Capability • IP & Conventional Telephony Will Live In Harmony For Years To Come Absolute Usage Will Increase

  22. The Future of Voice Over IP • This Is Not an Cheaper Voice Issue • Voice Over IP Will Be Sold on Feature Function • Facilitation of Collaborative Computing • Part of the PC Centric Workplace • Foster New, Not Replacement, Communication • Creates New Economic Opportunities For Those Who Exploit Its Potential

  23. ROCKS Rocks On the Road • DELAY • Need for Absolute Reliability • System Integration & Ease of Use • Costs

  24. DELAY • Who Will Tolerate It • One on One Calls • Conference Calls • Delay Sources — PCs, Gateways, Congestion • Digitizing Time • Less Time / More Packets • Not Practical in the Public Internet • Congestion Issues • Edges of the Public Internet • Well Managed Intranets

  25. Reliability • Voice Is Mission Criticaland How! • It Is Bad Enough When You Computer Network Is Down • If Your Voice Network Goes Down You Might As Well Go Home • Who Will Take the Risk? • How to Minimize Transition Risk

  26. Ease of Use • Voice Over IP Must Work From a Hand Set • Dialing Must Be Like It Is Today • The Same Is True of Fax • Remember the Impact of 1+ Dialing • Even Use Of 10XXX Is a Market Inhibitor • Multi-media MUST Be Easy to Use • Delay Is a Factor Here Too Can’t Change How People Work At Least Not Quickly

  27. Costs • Is It Really Cheaper to Do Voice Over IP? • Yes • But Not by Much • Fundamental Switching Costs Are Very Close • Bandwidth Use Is Lower • But the Cost of Gateways Eats up Most of That • For an Incumbent Carrier There Is No Push for Immediate Conversion • For a New Carrier It May Be the Way to Go • But Watch Out for the Quality of Service

  28. Generic Internet Considerations • QoS — RSVP • There is no NNI to signal requests bet. Networks • Billing Issue / Settlement • Can RSVP be supported in the public Internet? • Requires monitoring flows • 4,000 flows per second

  29. To Client Client Server To Server More Generic Considerations • Settlements — Speed & Distance • Cost Recovery International Traffic

  30. More Generic Considerations • Security & Privacy • Crypto Export • Addressing Through Gateways • White Pages

More Related