Suspending output from IMS

If the controller application program does not want or cannot receive any more output from IMS, the program can send the VTAM® quiesce-at-end-of-chain (QEC) command to IMS. IMS returns a DR1 and the VTAM quiesce-complete (QC) command. IMS does not send any more output to the workstation until it receives the VTAM release-quiesce (RELQ) command.

A workstation can also suspend output from IMS by sending the VTAM LUSTATUS or SIGNAL commands to IMS.