1 / 74

Introduction to Packet Voice Technologies

Dive into the world of packet voice technologies with this guide covering traditional telephony, basic components of a telephony network, call setup, supervisory signaling, and more. Learn about packetized telephony networks, call control, packet telephony components, real-time vs. best-effort traffic, and various physical connectivity options. Discover the benefits of packet telephony over circuit-switched telephony, including more efficient use of bandwidth, lower transmission costs, and increased revenue from new services. Explore the differences between digital and analog connections, time-division multiplexing, and frequency-division multiplexing. Get insights into foreign exchange interfaces, E&M interfaces, T1 and E1 interfaces, as well as types of trunk signaling and trunk supervisory signaling methods. Enhance your understanding of analog voice basics, local loops, signaling techniques, and informational signaling. This comprehensive overview provides valuable information on the fundamentals of packet voice technologies in the context of modern communication systems.

ibuckner
Download Presentation

Introduction to Packet Voice Technologies

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. Introduction to Packet Voice Technologies Cisco Networking Academy Program

  2. Traditional Telephony

  3. Basic Components of a Telephony Network

  4. Central Office Switches

  5. What Is a PBX?

  6. Basic Call Setup

  7. Supervisory Signaling

  8. Tone telephone DTMF dialing Address Signaling • Rotary telephone • Pulse dialing

  9. Informational Signaling

  10. Digital vs. Analog Connections

  11. Time-Division Multiplexing

  12. Frequency-Division Multiplexing

  13. Packetized Telephony Networks

  14. Packet Telephony vs. Circuit-Switched Telephony • More efficient use of bandwidth and equipment • Lower transmission costs • Consolidated network expenses • Increased revenue from new services • Service innovation • Access to new communications devices • Flexible new pricing structures

  15. Call Control

  16. Distributed Call Control

  17. Centralized Call Control

  18. Packet Telephony Components

  19. Real-Time vs. Best-Effort Traffic • Real-time traffic needs guaranteed delay and timing. • IP networks are best-effort with no guarantees of delivery, delay, or timing. • Solution is quality of service end-to-end.

  20. Foreign Exchange Station Interface

  21. Foreign Exchange Office Interface

  22. E&M Interface

  23. T1 Interface

  24. E1 Interface

  25. BRI

  26. Physical Connectivity Options

  27. Cisco IP Phone

  28. Analog Voice Basics

  29. Local Loops

  30. Types of Local-Loop Signaling • Supervisory signaling • Address signaling • Informational Signaling

  31. On Hook

  32. Off Hook

  33. Ringing

  34. Ringing (Cont.)

  35. Pulse Dialing

  36. Dual Tone Multifrequency

  37. Informational Signaling with Call-Progress Indicators

  38. Trunks

  39. Foreign Exchange Trunks • Foreign Exchange Office • Connects directly to office equipment • Used to extend connections to another location • Foreign Exchange Station • Connects directly to station equipment • Used to provision local service

  40. Types of Trunk Signaling • Loop start • Ground start • E&M Wink Start • E&M immediate start • E&M delay start

  41. Loop-Start Signaling

  42. Ground-Start Signaling

  43. E&M Signaling • Separate signaling leads for each direction • E-lead (inbound direction) • M-lead (outbound direction) • Allows independent signaling

  44. E&M Type I

  45. E&M Type V

  46. E&M Type II

  47. E&M Type III

  48. E&M Type IV

  49. Trunk Supervisory Signaling—Wink Start

  50. Trunk Supervisory Signaling—Immediate Start

More Related