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

    set  [node node-id] ddcmp link link-name ...

    Modifies the attributes of a link to a DDCMP communications port.
    The modifiable attributes and their data types [in brackets] are:

    retransmit timer [integer]
    physical line [local-entity-name]
    receive buffers [integer]

    Refer to attributes for specific command examples, or select
    logical_station to view the settable attributes of the ddcmp
    link logical_station subentity.

  Additional Information (explode) :

• physical_line
• receive_buffers
• retransmit_timer
• logical_station