Have set up a 678 on a 8Mbps DSL connection. Work with Linux? Yes. Use 'minicom -o' to set up through serial port. You can find the CBOS commands here: http://www.cisco.com/univercd/cc/td/doc/product/dsl_prod/c600s/cbos/cbos240/03chap02.pdf -- Jon Scully Sr. Embedded Software Engineer 971-344-0993 Cell