Concentric Data Systems USA:

    Concentric Data Systems, Inc.
    110 Turnpike Road
    Westborough, MA  01581
    Tel: +1-508-366-1122
    Fax: +1-508-366-2954

 Concentric Data Systems UK

    R&R Software Limited
    Viking House, Denmark street
    Maidenhead
    Berkshire SL6 7XJ
    Tel: +44-628 788181
    Fax: +44-628 788182