we have setup with Avaya 1230 SIP Phone,
and this phone we added to CUCM using "Third Party Basic SIP Phone" option.
Once registered with Call Manager "Date and time" in SIP Phones was showing fine.
we have reset the entire device pool, after that all the Avaya 1230 SIP Phone "Time" is showing +1 hour from the normal time.
How we can reslove this issue.
CUCM Version: 9.1(2a).
SIP Phone Model: Avaya 1230