I'm running cat5 though a house and the phone guy says I can run a multi-line telephone system through the cable. Question is, can I run both a 100baseT network AND a phone system through the same cable? Or do I need to run separate cable for the phone lines? If so, which phone cable is best to run for 4+ lines? RJ11 doesn't support that many lines to my knowledge, and I guess I could use RJ45, but I was wondering if there was something better. I'm setting up DSL too, if that makes any difference. (maybe better throughput with CAT5?) Any ideas?