Mitel MIVOICE OFFICE 250, Installation And Administration Manual

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MiVoice Office 250 Installation and Administration Guide
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3. In DB Programming, create an IP phone and specify the MAC address.
4. In the IP Settings folder for the newly created IP phone from the Internet, set the NAT Address
Type to NAT , as shown in the example below.
5.
Configure the IP phone (that is on the Internet) to communicate with the system’s (public) NAT
address. You can do this through the IP phone setup sequence or through the IP phone Web
page. The address to use is the public address associated with the Base Server’s main IP
address – regardless of whether the system is equipped with an optional PEC-1.
6.
For the “internal” IP phones (those in the internal network with private addresses), set the NAT
address type Native , and configure the IP phones to communicate with the system’s (private)
internal address, 192.168.1.2. Incorrect configuration may result in an undesirable effect called
tromboning. Not all firewalls support tromboning, so avoid this configuration, if possible. The
diagram on the previous page illustrates tromboning.