I was asked about how to connect to a Power 5 server through a serial cable and made a quick video that shows what you need, and how to connect to the server and access the text based ASMI as well as boot in to SMS and then boot from a CD all through a serial cable using PuTTY.

This isn't the best quality video but I thought I would put it out here in case it can help someone else who is having problems accessing their server through a serial cable..

https://www.youtube.com/watch?v=3qPHXFzWtZI&feature=youtu.be