System Settings - Snom 4S NAT Filter Admin Manual

„Public Address", the server will select a public address; if you select
„Private Address", the server will select a private address.

4.3 System Settings

The Log Level defines the granularity with which messages
are written into the log. A log level 0 means that only the most urgent
messages are written, a log level of 9 means that all possible log messages
are written.
If the Log Filename is set, all log messages are also written to
the indicated file. If the file name contains a dollar character, the dollar
will be replaced with the current date. Using this method, the NAT Filter
will write a log file for every day. This way you can keep a certain history
of log files and remove them from the file system as soon as you think the
information contained there is not relevant any more.
The Log Length number indicated how many log entries the NAT
Filter should keep in internal memory. The NAT Filter writes log messages
in the first-in-first-out principle, so that there is no memory leak caused
by log messages. The log messages written to the log file are not affected
by this setting.
You should specify a file name, so that the NAT Filter can Save
Registrations to File. This file is written each Registration Save
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