OK I just did an Asterisk restart from the console. The logs below do show an issue (I think) with the outbound trunk.
https://pastebin.freepbx.org/view/6fdcb1ea
I assume this entry is of some significance:
[2019-05-02 20:12:12] WARNING[2689] res_pjsip_outbound_registration.c: Fatal response ‘501’ received from ‘sip:192.168.2.200:5060’ on registration attempt to ‘sip:[email protected]:5060’, stopping outbound registration.
Then if I try to dial out:
https://pastebin.freepbx.org/view/2f048d4a
I’ve compared the config snippets on https://frag.co.uk/2017/08/14/cisco-spa-3102-freepbx-uk-caller-id/
to my configs and they are pretty much identical.