Multi-Tech Systems MULTIVOIP MVP-410ST/810ST - Manual (Page 306)

Technical Configuration (Analog/BRI) MultiVOIP User Guide
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19. Creating a User Default Configuration. When a “Setup” (complete
grouping of parameters) is being saved, you will be prompted about
designating that setup as a “User Default” setup. A User Default
setup may be useful as a baseline of site-specific values to which you
can easily revert. Establishing a User Default Setup is optional.