Solaris does not call any filters for a stream sent to remote printer. The IBM4019 printer attached to the NT server is a PCL emulator and does not speak Postscript. Yet, Solaris as installed only supports Postscript output. The command that performs the filter on the local queue will dump the stdout to the remote queue. GhostScript 5.10 or later for Solaris.
Binaries are probably available.
Assign ownership and permissions to this filters, otherwise the daemon might not be able to access it. Register this filter with the printing system. Verify the full filter has been parsed. Register the remote printer. The -s option is where the server ip and queue name are supplied.