Library /sys$common/syshlp/nclhelp.hlb set, osi_transport, maximum_transport_connections  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Tru64 UNIX Default: 128      Tru64 UNIX Value: 0-1023

    OpenVMS Default: 200         OpenVMS Value: 0-4294967295

    Maximum number of active transport connections allowed at one
    time. Must be less than the current value of maximum remote
    nsaps. You can modify this characteristic to a lower value only
    when the entity is disabled.

    set [node node-id] osi transport -
         maximum transport connections integer

    Example:

    set osi transport maximum transport connections 200