How to Stop, Start or Force Restart iSeries AS400 Enhanced Fax Support:

1- End Fax Support
ENDFAXSPT FAXD(*ALL) ENHSRV(*YES) and press ENTER

2- Confirm that the QFAXSBS and QFQSBS subsystems have ended:
WRKSBS
You might need to wait for a few minutes for them to end

3- Vary off and on the controllers:

WRKCFGSTS CFGTYPE(*CTL) CFGD(FAXD01) and press ENTER
Take option 2. Vary Off and press ENTER
Take option 1. Vary On and press ENTER
The controller will go to a Vary On Pending status

4- Start Fax Support and Enhanced Services:
STRFAXSPT FAXD(FAXD01) ENHSRV(*YES) and press ENTER