In order to capture issues on a device, it is possible to start a trace directly from the Yealink device itself. Traces from made from the device itself shows in many cases more detailed information about the possible causes then when a trace is made from the Kwebbl servers. 


There are two different traces:

  • Normal: capture all SIP Signalling from the device
  • Exchanged: capture all SIP Signalling and audio from the device


After the trace is performed, the file can be opened in 'Wireshark



SIP Signalling trace

If you want to capture all SIP signalling from a device in order to find any issues, you can easily start a trace from the device. This type of trace can be used to check: 

  • BLF status update
  • Registration 
  • SIP handling / flows on calls


Please follow the steps below to perform a trace without audio:  

  1. Login into the device, eg 192.168.1.10
  2. Go to 'Configuration'
  3. Set 'PCAP Type' to 'Normal'
  4. Click on 'Start'
  5. Try to reproduce the issue on the device
  6. Click on 'Stop' to stop the trace after reproducing the issue
  7. Click on 'Export' to save the trace



SIP Signalling trace including audio

In case a customer experiences audio issues, you can perform an Enhanced trace from the device. With this trace all audio is captured and can be listened in Wireshark. Please follow the steps below to perform the trace: 

  1. Login into the device, eg 192.168.1.10
  2. Go to 'Configuration'
  3. Set 'PCAP Type' to 'Enhanced'
  4. Click on 'Start'
  5. Try to reproduce the issue on the device
  6. Click on 'Stop' to stop the trace after reproducing the issue
  7. The trace is automatically saved in your downloads map