ZyXEL Communications PRESTIGE 128 - Manual (Page 121)

108 SNMP
If you leave the field blank (default), then the Prestige will
respond to all SNMP messages it receives, regardless of origin.
6. Trap: Community - In this field, enter the community name
that is sent with each trap to the SNMP manager. This should
be treated like a password and match what the SNMP manager
is expecting. The default is public.
7. Trap: Destination - This field contains the IP address of the
station that you wish to send your SNMP traps to.
Once you have completed filling in Menu 22 - SNMP
Configuration, press ENTER to confirm your selections or press
ESC to cancel your selections.
If you are unsure how to configure the fields for the SNMP
configuration, consult your network administrator.