So I've recently acquired some Cisco equipment and I've been building out a lab for me to play and tinker with. On the recommendation of several users I also purchased a Digi CM32 Access Server from ebay for pretty cheap. I know this is going to be pretty much the stupidest question ever, but I cannot find the answer for the life of me in the user manual or through google searches, so I turn to you, O wise users and friends of techexams!

Not sure what cables to use to connect from the access server to the devices. I've attempted connecting cross-overs, straight-throughs, and roll over cable from the access server to the console port on each router and swtich. I simply cannot get the access server to talk to any of the devices (basically I cant ssh or telnet through the access server to any device). I dont think the cables are the issue as I've tested them on other devices and they work (with the exception of the roll over cable). I'm able to connect to the access server and configure it, I dont think I'm configuring it incorrectly, but again I cant quite rule out misconfiguration.
Any thoughts on what the issues could be? Has anyone ran into a similar situation?