If you have enabled the callback security feature, you may wish to manage the number of attempts that RRAS makes to callback the users, if the initial callback fails. This would be useful when the telephone system does not reliably establish a call on the first attempt.
The default behavior of the RRAS server is to NOT make any additional attempts to callback. To alter this behavior:
1. Use Regedt32 to navigate to:
2. Edit or Add Value name CallbackRetries, a REG_DWORD data type. Using the Decimal Radix, set the number of retries to a number between 0 and 4294967295.
NOTE: You must start and stop the RRAS server for this change to become effective.