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

    set  [node node-id] lapb link simple-name ...

    Modifies the attributes for an lapb link entity, which is
    associated with a port of the supporting physical layer, and
    contains attributes that describle local LAPB operation.  The
    modifiable attributes and their data types [in brackets] are:

    acknowledge timer [milliseconds]
    holdback timer [milliseconds]
    interface type [DTE-or-DCE]
    maximum data size [integer]
    physical line [local-entity-name]
    poll timer [seconds]
    receive buffers [integer] (OpenVMS)
    retry maximum [integer]
    sequence modulus [8-or-128]
    window size [integer]

  Additional Information (explode) :

• acknowledge_timer
• holdback_timer
• interface_type
• maximum_data_size
• physical_line
• poll_timer
• receive buffers (OpenVMS)
• retry_maximum
• sequence_modulus
• window_size