Multi-Tech Systems MULTIVOIP MVP-2410 - Manual (Page 236)

Technical Configuration (Analog/BRI) MultiVOIP User Guide
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In the ISDN BRI Parameters screen, select one of the BRI interfaces and
configure it for the particular implementation of ISDN that you will use.
Configure each BRI interface per the requirements of your voip system. The
MVP410ST has two ISDN-BRI interfaces and four channels; the MVP810ST
has four ISDN-BRI interfaces and eight channels.