set  [node  node-id] x25 relay pvc pvc-name ...

    Modifies the attributes of an x25 relay pvc entity, which provides
    a set of default values to be used to establish a connection to a
    client over a permanent virtual circuit (PVC).  The modifiable
    attributes and their data types (in brackets) are:

    local pvc [simplename]
    remote dte class [simplename]
    remote pvc [simplename]
    retry limit [integer]
    retry timer [integer]
    rights identifiers [set of simplenames]