Remember that using an off - numbered port in hopes that it will
trick a hacker is not a good security practice. Security by obscurity will not defeat a dedicated hacker. If
increased security is the end result, deploy an encrypted solution and configure the UM dial plan to use
VOIPSecurity $true . The status parameter allows the UM admin to set the operation of the IP
gateway to one of three values: Enabled, Disabled, or NoNewCalls . Setting this parameter to a
nonenabled status can be useful when maintenance is necessary on the IP gateway.
The last feature for setting the IP gateway pertains to a simulation mode. This mode is either set to
Simulator $true or Simulator $false and is used to test connectivity and functionality to the
UM server. An IP gateway is not necessary if a pilot user is using the Unified Messaging test phone. The
test phone is an application that can be installed on a PC and configured to connect to the UM server to
test the unified messaging components without the use of an IP gateway. This may be of particular
benefit for test labs, or Exchange administrators looking to provide a proof of concept on the increased
functionality of Exchange Server 2007.
Setting the UM Mailbox Policy
When the original UM mailbox policy was created, only the two required parameters (the name of the
policy and the associated dial plan) were provided.
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