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Disable DTMF Fallback IT policy rule


This rule specifies whether a BlackBerry® device can use the DTMF call format for outgoing calls if the outgoing calls using a protocol format fail because of inadequate wireless coverage levels. The DTMF call format uses weaker authentication than the protocol call format.

Default value

The default value is False.


Change this rule to True to prevent outgoing calls if the protocol format cannot be used.

Minimum requirements

  • Java® based BlackBerry device
  • BlackBerry® Enterprise Server version 4.1 SP4

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