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

    Default for Tru64 UNIX: 128	        Value: 0-1023

    Default for OpenVMS: 200	        Value: 0-65535

    Maximum number of active transport connections allowed at one
    time. Must not be less than the current value of maximum remote
    NSAPs. You may not decrease the value while NSP is enabled.

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

    Example:

    set nsp maximum transport connections 200