There also may be times when the IP
address of the gateway changes and the UM server needs to be updated to show the new IP of the
appliance. To accomplish this, use the Set-UMIPGateway cmdlet. Remember that the identity
parameter is required in all of these set commands. When the UM IP gateway is created, an IP address is
required for the SIP conversation to take place. If the IP address of the appliance changes, you use the
address parameter to define the new IP address of the IP gateway.
Another feature is the use of outbound calls from the IP gateway. These are typically IP to PBX calls.
This can be used for a Unified Messaging and OCS VoIP deployment, or to utilize the ??? play on phone ???
feature that is available for voice mails from within Outlook 2007. If this setting is disabled, the play
on feature doesn ??™ t work, which eliminates the ??? play on phone ??? feature from within Outlook 2007, but
still allows for call transfers from within UM. To enable or disable this feature, use the
OutCallsAllowed and set the Boolean value to $true or $false .
By default the port that SIP conversations originate from on the IP gateway is 5060. If there is a need to
run this on an off - number port, the IP gateway can be modified via use of the Port parameter. This
parameter takes any port in the IP stack.
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