Milan Technology MIL-S3580 - Manual (Page 49)

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You can change the serial port baud rate setting through this screen to suit your
environment, however, using the default setting is recommended.
SNMP Community Setup
Figure 4-5. SNMP Community Setup Menu
Public Community (Read-only access right) means that member of community
can view the information but cannot make changes to the configuration.
Private Community (Read/Write access right) allow the member of the
community to view and make change to the configuration.
To set the "Public" and "Private" community name, you can type the desired text
string in the corresponding edit box.