How to enable D-Channel Pcap recordings
 When troubleshooting PRI/BRI connections is it sometimes useful to have a packet capture from the DChannel. The pcap will show you what is happening on the link at a low level during a call. These steps will enable pcap recording on the DChannel.
From the gateway homepage:
Click configuration
Click PSTN Config
Expand "Physical Configurations"Select your interface
Next to "Record To Pcap File" use the dropdown menu to select "Yes". Note: the field below indicates in which file the pcaps will be saved
Click 'Save'After making your test calls, the pcaps from those calls will be saved in the log (default:Â /logs/dchan-pcap-recording/)