ISO/IEC INTERNATIONAL STANDARD 14908-4 First edition 2012-02-15 Information technology Control network protocol : Part 4: IP communication Technologies de I'information - Protocole de réseau de controle- Partie 4:CommunicationIP Reference number ISO/IEC 14908-4:2012(E) ISo IEC @ISO/EC2012 ISO/IEC 14908-4:2012(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either Iso at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ ISO/IEC 2012 All riahts reserved