Conditions for Communication Check 50x

Home3270 requires both Data Set Ready (DSR) and Carrier Detect (CD) to determine the state of the attachment with the host system. If DSR is not recognized, communication check 501 appears in the operator information area. When DSR is recognized and CD is not recognized, communication check 504 appears in the operator information area.

When you select ROLMphone with DCM in the Home3270 configuration, communication check 504 does not appear.