Default: No records                         Value: Set of records

    Names of the nodes that may be used as candidate X.25 gateway
    systems and their associated ratings. Each record consists of
    a full name that describes the candidate node and an integer
    that indicates its ratings. The records are listed in order
    of descending rating. Values are entered as [node=nodename,
    rating=integer]. The rating represents the maximum number of
    session control connections to the node pair.