RE: SDLC, 2793 and IOP-less mode

Pete,

The newer comm cards are very sync-unfriendly. I believe they're saying that if 
you move the card under an IOP, thus restoring port 1 functionality, port 1 
would become a sync-capable RS-232 port to which you would still have to attach 
an external synchronous modem in order to run SDLC. However I'm kind of 
assuming that "the functionality of port 1" includes synchronous comm 
protocols, since the paragraph you quoted didn't really say that.

-Marty

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date: Wed, 19 Jul 2006 09:59:11 -0600
from: Pete Helgren <Pete@xxxxxxxxxx>
subject: SDLC, 2793 and IOP-less mode

I am getting a error when I try to vary on an SDLC line on a brand new 
520 at V5R3M0..  Doing some research I came across what I think is a 
direct hit on the problem but I don't understand the resolution.  Could 
one of you hardware gurus chime in?

The description of the proposed resolution is from an IBM support document:

The 2793 2-port WAN adapter card (IOA) at Releases V5R3M5 and V5R4M0 
supports only a PPP connection for ECS or Service Agent when operating 
in an IOP-less configuration. This is supported only over port 0 which 
is the internal modem port of the card. In IOP-less mode, port 1 
(external RS-232 port) is non-functional. Moving the IOA to a position 
under a real IOP restores the functionality of port 1.

It's the "Moving the IOA to a position under a real IOP restores the 
functionality of port 1."  Sounds simple enough (right?)....but how 
would you go about doing this?

Thanks,

Pete Helgren