I have been chasing for this for almost a year now and I still haven't got a resolution.
The previous tickets that I have created wer:
https://community.cisco.com/t5/cloud-calling/cti-xsi-quot-advanced-call-quot-events-were-not-received-for/m-p/4313767
https://community.cisco.com/t5/cloud-calling/devnet-sandbox-is-down-for-more-than-a-month-now/td-p/4455875
For OCI-P API, the IP address is not open at broadsoftsandboxxsp.cisco.com:2208 or broadsoftsandboxxsp.cisco.com:2209 which we have been asking for 5 months.
For CTI interface problem, please take a look at the ticket that I have posted.
Is there anyway, that we could get this resolved?