When Modem Manager answers a call, but no registered VTS driver accepts it, Modem Manager hands off the call to the next application that handles incoming modem calls. If another application accepts the call, Modem Manager increments a count of concurrent handed-off calls. While this count equals MaxHandOffCount, no further calls are handed off.
Note: If MaxHandOffCount is not defined in Config.ini, then there will be no restrictions on call hand offs.
Default: MaxHandOffCount = 0