1 / 7

Can We Talk? Presented by Todd McIntire

Can We Talk? Presented by Todd McIntire. Can We Talk?. IP Telephony (VoIP) Voice/Data Integration PC/Telephony Convergence. IP Telephony Basics. Data networks use TCP/IP Common protocol for disparate data networks Time-share approach to sharing data between asynchronous devices

dillian
Download Presentation

Can We Talk? Presented by Todd McIntire

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. Can We Talk?Presented byTodd McIntire

  2. Can We Talk? • IP Telephony (VoIP) • Voice/Data Integration • PC/Telephony Convergence

  3. IP Telephony Basics • Data networks use TCP/IP • Common protocol for disparate data networks • Time-share approach to sharing data between asynchronous devices • Packets travel when the network is available • Networks have variability and latency • Effective for email, file transfer, web browsing • Not effective for real time voice, video

  4. IP Telephony Basics • Public Switched Telephone Networks • Dedicated circuit for each conversation • Analog voice signals are digitally encoded to cross public network then decoded back to analog at receiver • Digital packets must arrive at decoder in sequence and in regular increments of time • Latency and variability must be nearly zero for voice message to be intelligible

  5. Voice vs. Data Networks • Voice • Sound bytes and silence bytes created, accepted, multiplexed, switched, transported and delivered at the frequent, regular and precise pace of every 125ms. • Data • packets created whenever there's some data around and move through the network whenever it's available.

  6. Convergence—Voice over IP • Voice over IP (VoIP) • Must keep latency, variability and loss to a minimum • Use compression to reduce vulnerability to latency, variability and loss • Real-time Transport Protocol • Intelligent continuity algorithms at receiving decoder • Fill voids by stretching and blending voice packets

  7. Advantages of VoIP • Cost—VoIP cost half of PSTN; fewer lines • Simplicity—Carry voice and data over same network • Integration—Single workstation for PC and telephony • Unified Services—Single mailbox for voice, fax and email

More Related