No chance, and it would not work on a power 5 system either, your IBM guys are wrong here, it would only have worked on power 4 and older systems.
Power 4 systems were the last to have RS232 ports by default.
The power 5 and power 6 ports can be used for console access and some limited remote console operations only.
No other "serial" devices are supported on the onboard ports because they are not serial ports any more, they are dedicated console ports that do not support the rs232 protocol.
You will need to buy a pci RS232 adapter if you want to connect any serial device other than a console or remote console via modem to a power 5 or power 6 system.
No question here at all.
You can run diags to check out the hardware is working and you can also connect a terminal to check they are working but you will not get any other serial device to work on these ports because they are NOT RS232 SERIAL PORTS.
They are exclusivly under the control of the system firmware, they are configured for speed, etc. in the service processor menus (ASMI), not in
AIX like real serial ports.
AIX is not in control here, the firmware is and it does not support anything but consoles.
How many ways can I say what I posted 3 days ago!