I am trying to access the calendar information from the IP phone but i am getting the error msg:
"Query Operation failed. The Calendar server maybe down. Please make sure the server is up and running."
I have configured presence gateways on the presence server for both the call manager and outlook. The exchange server is running and OWA is enable. The receive AS account as been created already and can access calendar information when tested directly from the browser. SIP presence trunk is also configure. Integration of presence with the call manager works fine as we can see phone status and we can access directory service from the IP phone
I am not sure what else could be the problem with the calendar/outlook. Any hints on thhis?
Is the trust certificate on the outlook gateway configuration required even if OWA is configured without SSL?