Some time ago I noticed that someone mentioned accessing a SIP account via the dialer on the librem 5.
I finally got around to getting a SIP account from callcentric and added the account details from the dialer option and make a manually dialed call. But after a reboot, the account vanishes from the L5 and only the “Add Account” is present even though the file /home/purism/.config/calls/sip-account.cfg still exists and is unchanged.
The same thing happens on a PinePhone with a recent mobian bookwork install.