--- title: "Debug" slug: "debug-24" updated: 2023-12-15T02:25:26Z published: 2023-12-15T02:25:26Z canonical: "knowledge.akuvox.com/debug-24" --- > ## Documentation Index > Fetch the complete documentation index at: https://knowledge.akuvox.com/llms.txt > Use this file to discover all available pages before exploring further. # Debug ## System Log for Debugging System logs can be used for debugging purposes. Go to **Upgrade > Diagnosis > System Log** interface. ![图片.png](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/%E5%9B%BE%E7%89%87-MGEQP97J.png) **Parameter Set-up**: - **Log Level**: select log levels from 1 to 7 levels. You will be instructed by Akuvox technical staff about the specific log level to be entered for debugging purpose. The default log level is **3**, the higher the level is, the more complete the log is. - **Export Log**: click the **Export** tab to export the temporary debug log file to a local PC. - **Remote System Server**: enter the remote server address to receive the device and the remote server address will be provided by Akuvox technical support. ## PCAP for Debugging PCAP is used to capture the data package going in and out of the devices for debugging and troubleshooting purposes. You can set up the PCAP on the device web **Upgrade > Diagnosis > PCAP** interface properly before using it. ![图片.png](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/%E5%9B%BE%E7%89%87-31BACJB5.png) **Parameter Set-up**: - **PCAP Specific Port**: select the specific ports from 1-65535 so that only the data packet from the specific port can be captured. You can leave the field blank by default. - **PCAP**: click **Start** tab and **Stop** tab to capture a certain range of data packets before clicking **Export** tab to export the data packets to your Local PC. - **PCAP Auto Refresh**: if you set it as **Enabled**, then the PCAP will continue to capture data packets even after the data packets reach their 50M maximum in capacity. If you set it as **Disabled**, the PCAP will stop data packet capturing when the data packets captured reach the maximum capturing capacity of 1MB. ## User Agent User agent is used for identification purpose when you are analyzing the SIP data packet. ![图片.png](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/%E5%9B%BE%E7%89%87-HDHQB5QV.png) ## Screenshots You can take a screenshot of the specific device screen to help with the troubleshooting and so on. Go to the web **Upgrade > Advanced > Screenshots** interface. ![图片.png](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/%E5%9B%BE%E7%89%87-GCR9E0WY.png)