BlackBerry Administration Service for Microsoft Exchange Help 5.0 SP3
BlackBerry Administration Service for Microsoft Exchange Help 5.0 SP3

Disable DTMF Fallback IT policy rule

Description

This rule specifies whether a BlackBerry® device can use DTMF for outgoing calls if the device does not have adequate wireless coverage to place outgoing calls using the gateway message envelope protocol. DTMF uses weaker authentication than the gateway message envelope protocol.

Possible values

  • Yes
  • No

Default value

  • No

Minimum requirements

  • BlackBerry® Mobile Voice System 4.5 or 4.6

Rule introduction

  • BlackBerry® Enterprise Server 4.1 SP4
  • KB15124