DIN EN 60870-6-503 : 2015 Title: Telecontrol equipment and systems - Part 6-503: Telecontrol protocols compatible with ISO standards and ITU-T recommendations - TASE.2 Services and protocol (IEC 60870-6-503:2014); English version EN 60870-6-503:2014 Year: 2015 Publisher: DIN Media GmbH Availability: Within 1-2 working days