Library /sys$common/syshlp/nclhelp.hlb set, x25_protocol, dte, maximum_restart_attempts  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Default: Supplied by   Value: Bounded by profile
    profile

    Number of times that any virtual circuit on the DTE attempts
    to send a restart packet. The value 1 indicates that a restart
    packet is sent only once; that is, there are no retries.