Type “rtp” in to the filter text box and click apply.

It is a small 73.69 MB file that will take some time. Step 3: Downloading of the executable file will start shortly. Step 2: Click on Download, a new webpage will open with different installers of Wireshark. Stop the capture and use the Filter to search for “rtp” and/or “sip” (lowercase only)Ģ. Step 1: Visit the official Wireshark website using any web browser. You should see data packets being captured in the Wireshark capture window Ensure that RTP and/or SIP Traffic is Being Capturedġ. Select the interface you wish to capture on (ie. Make sure that the phone system is powered on and is configured on the same network that you will be capturing traffic onģ. All Hubs are half duplex devices and most are 10mbps only devices.ġ.

A Hub cannot be used because the VoIP daughterboard requires a full duplex 100/1000 Ethernet connection.

traffic from a Cisco Cable Modem Termination System that is putting DOCSIS traffic onto.

If this is a capture of a connection between a phone system and a VoIP phone, simultaneous real-time captures from both ends will be required for troubleshooting. By reading this book, you will learn how to install Wireshark.

A managed switch capable of port mirroring.

Preferably a laptop with a 10/100 or 10/100/1000 Ethernet interface card.

Half Duplex connections are not supported.

NEC SL2100 KSU or NEC SL1100 KSU with VoIP daughterboard Card.

This is a must-read for installers working with or troubleshooting VoIP issues.

Wireshark allows you to capture and analyze VoIP network traffic and packet data from the NEC SL2100 and SL1100.

How to install wireshark on modem