Library /sys$common/syshlp/nclhelp.hlb set, x25_access, template, network_user_identity  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Default: No network user identity            Value: Hex string

    Network user identity to be included in the call packet. The
    format of the network user identity is specified by the PSDN
    administration.

    Example:

    set x25 access template TEMPLATE-0 network user identity %x12fe