Thanks for doing troubleshooting with me. Now you can connect your modem back to DSL port, I have created ticket for out Engineering team to assess your case due to no continuisy detected. For your reference ticket Numbet is 59599954. You will received update as well
Thanks for providing photos of socket, look normal to me, If you have spare adaptor then try with it, otherwise i have also cteated ticket for Engineer for further assessment in case we need to arrange Telstra Technician on site.