6 'voip' posts

In Wireshark's RTP Player, there is an option for "Playback Timing".

Thee options provided are:

• Jitter Buffer
• RTP Timestamp
• Uninterrupted Mode

These options can have a significant effect on the playback of a capture RTP stream dependant on the quality of the recording.

For example, if the...

A Wireshark PCAP network capture is a very useful thing when working with network based Software.

It allows you to see what data is being sent around the network, and with the right tooling you can replay them.

But sometimes, the recording has...

Wireshark capture files can be massive. So you may want to remove all the unnecessary data from the file before further analysis.

This can be done via the UI, but it is easier to do it via the command line.

Run the following tshark command, f...

Open your Pcap file in Wireshark.

On the menu, choose Telephony->VoIP Calls calls

Then find the call you want in the list, and select it. (Look for an INVITE 200 in the Comments section, and a From that has a phone number in it).

Once selected, press `Prepare Filter...

If you have a Pcap file network capture (generated by Wireshark perhaps) with a SIP or any Voice Over IP (VoIP) call traffic, you can listen to the raw calls within the Wireshark.

Open the pcap file in Wireshark.

On the menu, Choose Telephony->VoIP Calls
![VoIP Call Menu Opt...

When building any network related software, sometimes you need to capture the network traffic to debug an issue. The tool of choice tends to be Wireshark, which is truly excellent and I have used it for many years debugging TELNET, HTTP, SIP, UDP & RTP traffic.

However...