Date: 03/06/06 (Computer Geeks)    Keywords: no keywords

Hi, all. I have a serial cable that I've been using for kernel debugging purposes. It has black ends and two 9-pin female ends. This works great. However, recently I ran into an issue where I needed to move one of my machines so now my 6' cable won't reach the other machine. I was thinking this is just a typical null modem cable and I should be able to extend it with another one, but this isn't working for me. The other cable I found actually says 'Null Modem' on it, but has blue ends, one 9-pin male and one 9-pin female. I hook these up together, plug them into the machines, and the machines do not communicate with each other.

Can someone explain to me what I'm not understanding about these cables? Is it not possible to hook two Null Modem cables together? Why does one of my cables have black ends and one have blue? Just style or part of a spec? When I speak of "ends", I mean the pieces of plastic at the very ends around the pin holes. The cable itself is all beige. Thanks for any insight you can provide to help me get this working.

Source: http://community.livejournal.com/computergeeks/890230.html