Our Client has purchased new Cisco 7945 ip phones and these phones not displaying missed calls. We already have the same old phones and its working fine.
call manager version is: 220.127.116.1100-28
working 7945 load: SCCP45.8-5-2SR1S
New 7945 phone Load:SCCP45.9-4-2SR1-1S
For the new phones minimum required phone load is SCCP45.9-3-1SR . So i tried many loads above 9-3-1SR(SCCP45.9-4-2SR1-1S and SCCP45.9-3-1SR4-1S) but no luck.
I checked this phones in our lab and surprisingly its working with these loads: SCCP45.9-4-2SR1-1S and SCCP45.9-3-1SR4-1S. My cucm version is same as 18.104.22.16800-28.
So i restarted the TFTP services in the affected CUCM but still the issue exists. Please advise how to troubleshoot this issue.
Today i restarted the cucm servers, but still the issue there. Te confusing part is i tried the latest firmware(SCCP45.9-4-2SR1-1S) in a working old phone(load version 8.5 ) and phone has stopped showing the missed calls as these firmware tested in lab.
is that because of firmware issue or CUCM behavior ?
Please help me.