Have read Cisco document showing how to copy a configuration file to and from a Cisco device with the CISCO-CONFIG-COPY-MIB
here:
http://www.cisco.com/c/en/us/support/docs/ip/simple-network-management-protocol-snmp/15217-copy-configs-snmp.html
I would appreciate if you show an example how to copy the Running-Configuration from Cisco CPE device to the local computer using CISCO-CONFIG-COPY-MIB