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Voice over IP Online Course

Lesson 4 - Quality of Service

Introduction

Synopsis

When you pick up a telephone, you expect to converse in a clear and understandable way. The ubiquitous public system telephone network provides this service. A voice over IP system needs to provide the same. Anything less would provide an excuse to avoid the technology. The public Internet is notoriously haphazard. Watching a web page stall as it loads is a fine example of the pitfalls of this complex technology. Quality of service is an issue with Voice over IP and is usually listed as one factor in the slow adoption of the technology. In the case of VoIP, QoS means that the telephone conversation sounds as close to real life as possible, or at least similar to a conversation over the public telephone network.
This module looks at the factors that affect quality of service for VoIP and then examines the techniques that may be applied to a VoIP system that can give the users a true high quality telephone experience.

Lesson Index

A. QoS factors
B. Bandwidth: Share or restrict
C. Providing QoS
D. Packet Level Techniques for Providing QoS
Review and Final Exercise

Lesson Objectives

Upon completion of this section, students will: [Top of page][On to next section]







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Voice over IP Online Course

Lesson 4 - Quality of Service

Introduction

Synopsis

When you pick up a telephone, you expect to converse in a clear and understandable way. The ubiquitous public system telephone network provides this service. A voice over IP system needs to provide the same. Anything less would provide an excuse to avoid the technology. The public Internet is notoriously haphazard. Watching a web page stall as it loads is a fine example of the pitfalls of this complex technology. Quality of service is an issue with Voice over IP and is usually listed as one factor in the slow adoption of the technology. In the case of VoIP, QoS means that the telephone conversation sounds as close to real life as possible, or at least similar to a conversation over the public telephone network.
This module looks at the factors that affect quality of service for VoIP and then examines the techniques that may be applied to a VoIP system that can give the users a true high quality telephone experience.

Lesson Index

A. QoS factors
B. Bandwidth: Share or restrict
C. Providing QoS
D. Packet Level Techniques for Providing QoS
Review and Final Exercise

Lesson Objectives

Upon completion of this section, students will: [Top of page][On to next section]







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