Initial sequence I used was after login sudo apt update sudo apt upgrade reboot raspbx-upgrade most of the raspbx-upgrade is done in the second action. then config the raspberry - expand file system - localisation -etc sudo raspi-config Note ssh is not turned on by default - when you have put the image on the SD card add a file called ssh no file extension and nothing in the file - that enables ssh. Serial does not work. https://sourceforge.net/p/raspbx/discussion/tutorials/thread/481bdd7ec9/?li...
The last image is 10-10-2020 - not old at all. see my comment on https://sourceforge.net/p/raspbx/discussion/tutorials/thread/481bdd7ec9/?limit=25#395e
Come on Own up - you have obviously found your mistake- let everyone know so that they do not make the same mistake. And just for information as a test for any oddities that people have commented on -I have today downloaded and installed the 10-10-20 on a PI3 and a PI4 and both worked fine. Even the PI3 sd card worked in the PI4.
Have a read here - https://sourceforge.net/p/raspbx/discussion/general/thread/deef77ca/?limit=25
Google is your friend ! Here is just one of many https://geektechstuff.com/2020/02/15/tcpdump-raspberry-pi/
Hi, I don't use PJSIP just standard Chan- Sip and have external extensions, however this may help I turned off PJSIP through Advanced settings Sip Channel driver box and selected Chan Sip, as I never had much success with PJSIP. This has been working for a number of years quite happily. I have changed the default Chan- Sip port of 5060 to something else that is in the higher numbers !! You can do the same with PJSIP as well I think Done in Sipsettings, Chan Sip Settings look for Advanced General...
https://sourceforge.net/p/raspbx/discussion/general/thread/1d91d02e54/?limit=25#f4bf
I wonder if you have seen this - he seems to have had succes. https://www.tomshardware.com/uk/how-to/boot-raspberry-pi-4-usb Last time I posted a link it took days for it to be approved !!! lets see this time.