Our Network Operations Centre (NOC) have identified an issue detailed as follows.
CVS Time of day routing is having issues. Voice engineers are investigating.
Some inbound calls may not be connecting.
Work around - Change the time of day setting to Forced On. Contact the Optimus Systems Service Desk if you are experiencing any issues.
Update 9:41AM 1/10/2018 - The issue is now resolved, status is set to monitoring.
** Resolved ** 10:21AM 1/10/2018 - The issue is now fully resolved.