Configuring legacy protocols Configure Protocol Switch software
Digi TransPort® Routers User Guide
663
Protocol Switch software logic
This flowchart outlines the logic in the switching software. The notes after the flowchart provide a
more in-depth explanation of the actions taken in each of the numbered boxes.
n The router first looks up the Called NUA/NUI in the Configuration > Network > Protocol
Switch > NUA to Interface Mappings mapping table to determine the IP address to use in the
event that the call ends up being switched to a TCP or XOT interface. If a match is found on the
Called NUA/NUI the router assigns the matching IP address from the table to the call. If IP
address mapping table does not contain an entry for the Called NUA/NUI and the call is
eventually switched to a TCP or XOT channel, the router uses the default IP address (IP
Stream or XOT Remote IP Address).
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