Multi-Tech Systems MULTIVOIP MVP-2410 - Manual (Page 272)

Technical Configuration (Analog/BRI) MultiVOIP User Guide
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16. Set Baud Rate. The Connection option in the sidebar menu has a
“Settings” item that includes the baud-rate setting for the COM port of the
computer running the MultiVOIP software.
First, it is important to note that the default COM port established by the
MultiVOIP program is COM1. Do not accept the default value until you
have checked the COM port allocation on your PC. To do this, check for
COM port assignments in the system resource dialog box(es) of your
Windows operating system. If COM1 is not available, you must change the
COM port setting to COM2 or some other COM port that you have
confirmed as being available on your PC.
The default baud rate is 115,200 bps.