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Other languages can be added (sipxecs-setup.po moo file), and the directory location should match to the following template:
$INSTALL/share/sipxecs/locale/<locale_code>/LC_MESSAGES/ (e.g. fr_FR)
Python has an automatic fall-back chain mechanism, so when a key-value pair is not found in a particular localization file, automatically
falls-back to the corresponding en_US key-value pair. If this one still does not exists the string from setup script is displayed
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The default en_US localization .mo (sipxecs-setup.mo) file key-value pairs can be overwritten automatically at run-time
by the OEM corresponding key-value pairs from the OEM versionsipxecs-setup.mo
So if you use a OEM plugin, you can provide your own key-value pairs instead of the existing en_US version.
Locate your OEM sipxecs-setup.mo here: $INSTALL/share/sipxecs/locale/en_US_OEM/LC_MESSAGES/
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