Ensure that your xerox printer support SNMP and that it is enabled. You may need to access the printer's web interface or settings menu enable SNMP.
Sorry no. Interesting idea to add an snmp MIB with this kind of info.
you will need to contact either Xerox supplies by phone and ask or your sales rep.
Is it possible to do a SNMP query to see if the printer has an active supplies plan and if it has one how many days it's remaining