You can back up the configuration of an R5 on the hard drive of the R5 itself, with the "backup/restore/reports" option of the programming menu in the Administrator's mailbox.
You can dump a hardcopy of the configuration to a local PC connected to the serial port through the same option.
There is no remote PC connection available.
The new Partner Messaging R1 has a local serial port, a remote modem, and a local LAN port available for on site and remote programming.