ISO INTERNATIONAL STANDARD 21460 Third edition 2015-08-15 Space data and information transfer systems Proximity-1 space link protocol Physical layer Systemes de transfert des informations et données spatiales Protocole pour liaisons spatiales de proximité 1 Couche physique Reference number ISO 21460:2015(E) SO International Organization for Standardization @ IS0 2015 Institute of Sta dardization5956617 vided by IHS under ted without license from IHS IS0 21460:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org PrganizationforStandardization Not for Resale, 2015/11/11 06:49:34 etworking permitted without license from IHS ISO 21460:2015(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with isO, also take part in the work. isO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. isO shall not be held responsible for identifying any or all such patent rights. of this International Standard) by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 13, Space data and information transfer systems. This third edition of iS0 21460:2015 cancels and replaces the second edition (iS0 21460:2007), which hasbeentechnicallyrevised ii