how to use wireshark to troubleshoot network issues

Packets may take various paths to get to their destination, where they are reassembled into the original voice conversation. This means that the voice of a caller being transmitted over the network infrastructure is broken down into small pieces or packets that are sent individually. VoIP, on the other hand, which takes advantage of IP networks, is packet switched. This is true even of ISDN circuits, which operate in a similar manner even though they are digital. Traditional voice is primarily circuit switched, which means that connections are made from end to end whenever a call is initiated, and are torn down once the call is complete. The troubleshooting procedures for any kind of application that is running on an IP network are quite different from those involved in traditional telephony. The nature of conventional voice compared with VoIP In this article we look at a nifty tool called a packet sniffer that can be used for troubleshooting many types of VoIP problems and should be in the toolbox of any telephone installer. So, if you’re an expert in ISDN, SS7 or other conventional telephony technologies, it’s essential to also be familiar with data networking fundamentals to remain competitive and relevant in the telecom industry. If you go in on the voice side of things, you will inevitably become involved with the data side, as well.” As Voice over IP (VoIP) technologies are overtaking more traditional telephony systems such as ISDN and analog, the voice engineer is required to know data networking fundamentals in order to implement, maintain and troubleshoot modern voice systems.īack in 1999, when VoIP was still in its infancy, Industry Expert Bruce Robertson told students in the Sheridan College Telecommunications Management post graduate program, “If you go into the telecom industry on the data side, you will probably stay on the data side for all of your career. If you’re on the voice side of the telecommunications industry, it is inevitable that you will be dealing with data networking.

How to use wireshark to troubleshoot network issues