UC Suite Summer 2018 and higher versions.
This article describes how to configure the suite to validate the user PIN on CUCM in place of the internal database.
Please, be aware that this applies to the following services:
1) Edit or create this file: StonevoiceAS\Apps\FW\Settings\FW.Profile.Api.Config.xml
adding the following line:
<?xml version="1.0" encoding="utf-8"?>
<configuration version="1.0.1.0">
<preference key="Authentication.PinAuthPriority" value="CcmIas" />
</configuration>
2) If you are using also voicemail, restart the voice mail service to apply the change.
3) Ensure that:
4) Try to lock/unlock a phone using the same PIN of CUCM.