[cisco-voip] UCCE CTIOS login error - Timeout Limit Exceeded

[Boon]

I have an issue with my customer's UCCE deployment. They are using a
customised CTIOS desktop and are sporadically unable to login to 7962
handsets.

They receive an error message pop-up stating 'The request failed because a
timeout limit was exceeded'.

I'm responsible for the CUCM that UCCE integrates with and have been able to
resolve the issue temporarily by disassociating/associating the handset with
the JTAPI controlled Application User in CUCM.

I've compared the failed vs successful CTI trace files and cannot see any
request to control the device when the login fails sent from the PG.

Has anyone experienced this in the past?

I'm also seeing some strange behaviour in RTMT. If I perform a device
summary search on the device pool of the affected phones in either a
registered or unregistered state I can see that they're showing as
registered on their primary CMGroup UCM and then also unregistered on their
secondary CMGroup UCM. Could this be related or is it a red herring?

Thanks in advance for any assistance.
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