Some phones does not showing the corporate directory . These phones are registred on sub ,at the same time other phones which is registred on the sub can see the directory .
directory is local .
The problem is intermittent . So I think it might not be related with certificate .The certificates are valid ?
Do the ITL thumbprints match between a working and non-working phone?
Could you explain how can I do this
is there a way to move from the sub to. Pub without restarting the Sub to confirm the problem is with the phones which registered to the sub.
Yes, you can move phone registration from CUCM Sub to Pub without restarting Sub. Follow this procedure:
1. Make CUCM Pub as primary and CUCM Sub as secondary under Cisco Unified CM Group.
2. Click Save and Reset Cisco Unified CM Group