Hi,
That is the default value, please try this solution:
1. On theMiCC server, go to [InstallDir]\CCM\Services\EnterpriseServer\.
2. Open theprairieFyre.Services.EnterpriseServer.exe.conf ig file in an editor like Notepad.
3. Go to the bottom of the <prairieFyre.Services.EnterpriseServer.Properties. Settings> section
4. Insert the following:
<setting name=\"DefaultAbandonedCallbackRequestExpiry\" serializeAs=\"String\">
<value>30</value>
</setting>
5. Change the value to the time desired. This will be the delay between an abandoned call and the initial callback attempt in minutes (the above example shows the default 30 minutes).
6. Save the file.
7. Restart the prairieFyre .NET Enterprise Server service.