I have 1 tivo upstairs and I make daily calls via telnet (serial cable) and the other downstairs, too remote from my pc and for this, daily calls are made through the telephone line. I am considering installing shielded 2 twisted pair cable between PC and downstairs tivo, via the loft/tv aerial trunking which is already in the lounge/bedroom cavity wall. Is it practical to splice this cable, such that both tivos are connected to my PC serial adapter. and make daily calls simultaneously from both machines ? Suggestions gratefully received.