ISO/IEC INTERNATIONAL STANDARD 29341-20-3 First edition 2017-09 Information technology UPnP Device Architecture Part 20-3: Audio video device control protocol - Level 4 Media server device Technologies de I'information -Architecture de dispositif UPnP. Partie 20-3:Protocole de controle de dispositif audio-vidéo- Niveau 4-Dispositif serveurde média Reference number IEC IS0/IEC29341-20-3:2017(E) Copyright International Organization for Standardization @IS0/IEC2017 JACKEY, MA ut license from IHS IS0/IEC29341-20-3:2017(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC2017,PublishedinSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 copyright office 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 @ IS0/IEC 2017 - All rights reserved No reproductic r networking permitted without license from IHS IS0/IEC 29341-20-3:2017(E) CONTENTS Scope 2 Normative references 3 Terms, definitions, symbols and abbreviations 3.1 Provisioning terms. 3.2 Symbols 4 Notations and Conventions.. 4.1 Notation. 5 4.1.1 Data Types. 4.1.2 Strings Embedded in Other Strings... 4.1.3 Extended Backus-Naur Form.... 4.2 Derived Data Types ... 4.2.1 Summary . 4.2.2 Csv Lists... 4.3 Management of XML Namespaces in Standardized DCPs.. 4.3.1 Namespace Prefix Requirements.... 4.3.2 Namespace Names, Namespace Versioning and Schema Versioning ... 4.3.3 Namespace Usage Examples .. 15 4.4 Vendor-defined Extensions. 15 4.4.1 Vendor-defined Action Names. 15 4.4.2 Vendor-defined State Variable Names .. 15 4.4.3 Vendor-defined XML Elements and attributes .... 4.4.4 Vendor-defined Property Names... 5 Device Definitions .. ..16 5.1 Device Type ... 5.2 Device Model . 5.2.1 Description of Device Requirements 17 5.2.2 Relationships Between Services. 6 XML Device Description .17 7 Test... ...19 Annex A (informative) Theory of Operation A.1 Device Discovery .20 A.2 Locating Desired Content.. .20 A.3 Preparing to Transfer the Content A.4 Controlling the Transfer of the Content . A.5 Recording Content .. ..21 Annex B (informative) Bibliography @ ISO/IEC 2017 - All rights reserved ii Copyright International Organization for Standardization ACKEY,MA ted withoutlicensefromIHS