Figure 91 Tutorial: Packet Capture - ZyXEL Communications X6004 User Manual

Chapter 3 Tutorials
2 Open another browser and log into the X6004 using the newly created debug admin
account.
3 Go to Maintenance > Administration > Diagnostics > Packet Capture and fill in the
following information.
• Interface: LAN
• Host: 192.168.1.150
• Protocol: All
• Stop capture after: 3000 packets
• Stop capture after: 600 seconds
Then click Capture Now.

Figure 91 Tutorial: Packet Capture

4 Re-initialize the SIP phone. This helps to get a complete packet capturing.
5 Wait several seconds, click Stop Capture, Download and then Save to save the
capturing file on your computer.
Figure 92 Tutorial: Download the Packet Capturing File
6 Use a packet capturing tool (such as Ethereal) to open the file and analyze the possible
root cause.
In this example, registration fails because the SIP username must be a number and not
letters (bob in this example) for the X6004.
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X6004 User's Guide