# IBM Personal Communications

IBM PC 3270 requires you use the PCS parameter in the [LLC] section of your SMART.CFG file. An example is shown below:

       [LLC]
            PCS

If you are using IBM PC 3270 version 1.00, then use the PC3270=100 parameter in the [HOST] section of the SMART.CFG, instead of putting the PCS parameter in the [LLC] section.

If you are using IBM PC 3270 version 1.01, then use the PC3270=101 parameter in the [HOST] section of the SMART.CFG file, instead of putting the PCS parameter in the [LLC] section.

If your Ringnode fails to open and you are running IBM PC 3270 version 2.0 or version 3.0 Gateway, then you may need a patch from IBM.