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1-Day Instructor-Led Hands-On Lab Course
Available through Web-Based Live Delivery or On-Site Delivery
Minimum 8 Students – Maximum 16 Students

What Students are saying about this class:

“[The instructor] explains things in a way that any of us can understand.”
“Seeing scenarios first hand. Knowing where to look.”
“Like that it is almost all hands on and not just talking and slideshows.”
“Instructor presents everything very clearly and enthusiastically”
“Like how the instructor periodically comes back to the same core concepts to reinforce them”
“The best part was learning about all of the most useful features and tools in Wireshark, and the hands on exercises in the lab were particularly good at highlighting how to get the most out of the tool. Also Andy Walding is and EXCELLENT instructor he did an excellent job of covering the most important aspects of the tools and protocols and he has a very deep understanding of the subject material.”
“The Online School is a great resource, I’m glad to know that this school exists!”

Course Description

When a VoIP call fails, has one-way audio, sounds poor, or behaves unexpectedly, the challenge is determining whether the problem involves the phone, signaling, media, network performance, Quality of Service, or some combination of these factors. Wireshark provides the packet-level evidence needed to investigate what actually happened.

Wireshark Voice Analysis in a Day is an intensive one-day hands-on course designed to develop practical skills for analyzing and troubleshooting Voice over IP traffic with Wireshark. Using a “follow me” learning approach, students work alongside the instructor while examining packet captures representing common VoIP behaviors and potential problems.

Rather than spending the day learning every feature of Wireshark or every detail of Voice over IP, the course concentrates on the tools, protocols, and analysis techniques that are most useful when investigating voice problems.

Students begin by verifying and customizing Wireshark for VoIP analysis. They then examine issues involving VoIP phone configuration, the SIP control plane, the RTP media plane, and Quality of Service. These individual skills are brought together into a repeatable VoIP troubleshooting workflow that students can apply in their daily work.

Throughout the course, students use Wireshark’s packet-analysis and Telephony features to follow call behavior, correlate signaling with media, identify potential problem areas, and determine what the packet evidence actually proves.

This course helps answer questions such as:

How should Wireshark be configured specifically for VoIP troubleshooting?
What packet evidence can reveal VoIP phone configuration problems?
How can SIP and SDP signaling help explain why a call succeeded or failed?
How can RTP and RTCP reveal media and voice-quality problems?
How can Wireshark help investigate QoS-related VoIP issues?
How can signaling, media, and network behavior be correlated during troubleshooting?
What repeatable process can be used to troubleshoot VoIP calls with Wireshark?

Course Objectives

Upon successful completion of this course, students will be able to develop practical, hands-on skills for using Wireshark to analyze Voice over IP communications in the following key areas:

Customize Wireshark specifically for VoIP packet analysis.
Analyze the VoIP control plane using SIP and SDP.
Analyze the VoIP data plane using RTP and RTCP.
Investigate common VoIP phone and network-related issues.
Use Wireshark tools to examine QoS and voice-performance concerns.
Develop a repeatable VoIP troubleshooting workflow that can be applied in daily operations.

Audience

This course is designed for networking and telecommunications professionals who need practical skills for using Wireshark to analyze and troubleshoot Voice over IP communications.

Ideal participants include:

Central-office and field technicians who need to capture and analyze VoIP traffic
Network administrators and support personnel responsible for VoIP problems
Operations personnel who provide network configuration, monitoring, and support
Network design engineers who use Wireshark as a voice troubleshooting and analysis tool
Technical marketing professionals working with VoIP technologies
Technical sales professionals who need to correlate product features with actual network and protocol behavior
Technical professionals who want more than a basic understanding of Wireshark and VoIP analysis

The course is particularly valuable for technicians, engineers, operations personnel, customer-support teams, and other professionals who need to quickly determine what happened during a VoIP call and where troubleshooting should focus next.

Course Prerequisites

This course is designed for anyone who needs practical skills for analyzing VoIP traffic with Wireshark.

The ideal student has some previous experience with Wireshark and a basic understanding of voice networking or VoIP operations. However, the course is structured so that students can follow the instructor through the analysis process without requiring advanced prior packet-analysis experience.

Students should attend with a laptop computer running Windows, macOS, or Linux with a current operational version of Wireshark installed.

Class size is limited to 16 students.

Course Materials

Students receive a PDF Course Student/Lab Guide.

Access to specialized VoIP Wireshark profiles, packet captures, and supporting analysis materials is also provided through the CellStream Online School of Network Sciences.

Course Outline

Section 1: Course Introduction and Logistics

Section 2: Verifying and Customizing Wireshark for VoIP Analysis

Section 3: Troubleshooting VoIP Phone Configuration Issues

Section 4: Analyzing VoIP Control-Plane SIP Issues

Section 5: Analyzing VoIP Data-Plane RTP Issues

Section 6: Analyzing VoIP Quality of Service Issues

Section 7: Developing the VoIP Troubleshooting Workflow

Course Availability:

View the course calendar and browse for our schedule. It will show scheduled courses and available dates for scheduling.

CSI-HO-020-K – Wireshark Voice Analysis in a Day – 1 Day