To get the Asterisk CLI output:
/opt/pbxware/sh/asterisk -rvvvv
to display CLI output on screen
or
/opt/pbxware/sh/asterisk -crvvvv > debug.txt
to save CLI output into a debug.txt file
If displaying CLI output on screen, press CTRL + C to exit the CLI mode
Once done send the output to the Support Team if required for debugging
When in asterisk CLI you can run many debug/info commands like pjsip show endpoints or pjsip show registrations etc.
NOTE: For details and a list of available commands, type 'help'.