UCCX 7 SR5 agent login gives timeout - unable to connect to UCCX server

Question

Team - running high availability. The CAD login for UCCX 7 SR5 gives occasionally timeout errors.
Unable to connect to UCCX server. What is the root cause of this?
on CAD client PC based on Cisco recommendation
C:\Program Files\Cisco\Desktop\config, we changed PhoneDev.cfg.
added ->
[ReqTimeout]
Milliseconds=30000
While this helped it still happens. Is this a bug you have seen?
What could be done for the root cause.

Answer 1

Hello,
This happens because the CAD client software is timing out due to not receiving a response from the UCCX server in the configured and default
10 seconds. Increasing the timeout alleviates the symptom, but the root cause could be slowness or connectivity problems between CUCM and AD. The default timeout between them is 30 seconds. You can check if you have an DC/GC down or not responsive or point your CUCM to authenticate to a local DC/GC, but definitely need to check on the CUCM / AD side.
CSCta49259    CAD client timeout value not present in PhoneDev.cfg
Symptom:
Per MIVR logs CAD side is timing out and changes to the server-side properties did not resolve the issue.
Conditions:
UCCX 7.0(1) CAD
Workaround:
on CAD client PC
C:\Program Files\Cisco\Desktop\config, there should be a file
called PhoneDev.cfg.
add ->
[ReqTimeout]
Milliseconds=30000
save then restart the CAD client .
HTH
Pablo