Thanks - it was the MCATYPE I was looking for. It looks like the SRVCONN channel type doesn't have this attribute. Does it run as a thread in the listener process or run a separate process for the MCA?
PS To those who will say "But Dave, you should know that stuff" - indeed I probably should and indeed did once - but my memory isn't what it was :-( Dave Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive