I have a problem with a Telefonica 100Mbit line using a TELNET CM-100 media converter (it's telefonicas box). The line won't come up if I connect it to the PA-FE-TX FastEthernet card. We've tried crossover cables, straight cable, half and full duplex but it wont budge. If we put a PC or switch it comes up without a problem. The problem is that the client has this setup on his end and we use a switch. They don't want to use a switch but connect it directly to the router, which makes sense.
If anyone has had any issues and resolved them with this media converter or an equipment similar, it would be much appreciated if you'd share your experiences.