Domain changed and now CTI is broken

Issue
Domain has been changed and now CTI is broken

Solution
Check tbl_cti_link, CTI integration uses machine name to link the PC or User to their telephone number. The machine name might contain the domain too e.g. it was 'machinexyz.olddomain.com' but should now be 'machinexyz.newdomain.com'.

So the machine names don't match and CTI is broken.