1、BSI Standards PublicationCommon control interface for networked digital audio and video productsPart 5-2: Transmission over networks Signalling (TA4)BS EN 62379-5-2:2014National forewordThis British Standard is the UK implementation of EN 62379-5-2:2014. It isidentical to IEC 62379-5-2:2014.The UK p
2、articipation in its preparation was entrusted to Technical Com-mittee EPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions
3、ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 79812 2ICS 33.160.01; 35.100.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publi
4、shed under the authority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62379-5-2:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 62379-5-2 May 2014 ICS 33.160; 35.100 English Version Common
5、control interface for networked digital audio and video products - Part 5-2: Transmission over networks - Signalling (TA4) (IEC 62379-5-2:2014) Interface de contrle commune pour produits audio et vido numriques en rseau - Partie 5-2: Transmission sur les rseaux - Signalisation (TA4) (CEI 62379-5-2:2
6、014) Gemeinsame Steuerschnittstelle fr netzwerkbetriebene digitale Audio- und Videogerte - Teil 5-2: bertragung ber Netzwerke - Signalisierung (IEC 62379-5-2:2014) This European Standard was approved by CENELEC on 2014-04-11. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulati
7、ons which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC memb
8、er. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official version
9、s. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the N
10、etherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Managemen
11、t Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62379-5-2:2014 E BS EN 62379-5-2:2014EN 62379-5-2:2014 - 2 - Foreword The text of document 100/2050/CDV, future edition 1 of IEC 62379-
12、5-2, prepared by IEC/TC 100, “Audio, video and multimedia systems and equipment“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62379-5-2:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an
13、identical national standard or by endorsement (dop) 2015-01-11 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-04-11 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC
14、 and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62379-5-2:2014 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note
15、s have to be added for the standards indicated: IEC 60958-4 NOTE Harmonised as EN 60958-4. IEC 61883 (Series) NOTE Harmonised as EN 61883 (Series). IEC 61937 (Series) NOTE Harmonised as EN 61937 (Series). BS EN 62379-5-2:2014- 3 - EN 62379-5-2:2014 Annex ZA (normative) Normative references to intern
16、ational publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of
17、 the referenced document (including any amendments) applies. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is avai
18、lable here: www.cenelec.eu Publication Year Title EN/HD Year IEC 60958 - Digital audio interface EN 60958 - IEC 62365 2009 Digital audio - Digital input-output interfacing - Transmission of digital audio over asynchronous transfer mode (ATM) networks EN 62365 2009 IEC 62379 series Common control int
19、erface for networked digital audio and video products EN 62379 series IEC 62379-2 2008 Common control interface for networked digital audio and video products - Part 2: Audio EN 62379-2 2009 IEC 62379-5-1 - Common control interface for networked digital audio and video products - Part 5-1: Transmiss
20、ion over networks - General FprEN 62379-5-1 - AES53 - AES standard for digital audio - Digital input-output interfacing - Sample-accurate timing in AES47 - - ITU-T recommendation Q.850 - Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISD
21、N user part - - BS EN 62379-5-2:2014 2 IEC 62379-5-2:2014 IEC 2014 CONTENTS INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Terms and definitions . 8 4 Identification . 10 4.1 Byte order . 10 4.2 Unit identification 10 4.3 Flow identifiers 10 4.4 Address format 11 5 Message format 12 5.1 G
22、eneral . 12 5.2 Header 13 5.3 Variable part . 14 5.3.1 General . 14 5.3.2 Information element format 14 5.3.3 Order of occurrence of information elements . 15 5.4 Data formats . 16 5.5 Contents of fixed and variable parts 16 5.5.1 FindRoute messages . 16 5.5.2 ClearDown messages 16 5.5.3 AddFlow mes
23、sages . 16 5.5.4 NetworkData and EndToEndData messages 16 5.5.5 AsyncSetup messages 17 5.5.6 Extended message types . 17 5.6 Information element types . 17 5.6.1 Coding of “type” field . 17 5.6.2 Called address 18 5.6.3 Flow descriptor 18 5.6.4 Data format or protocol 19 5.6.5 Start time. 19 5.6.6 E
24、nd time 19 5.6.7 Call importance . 19 5.6.8 Service (or programme) name . 19 5.6.9 Source name . 19 5.6.10 Destination name. 20 5.6.11 Privilege level 20 5.6.12 Password 20 5.6.13 Charge for call . 20 5.6.14 Calling address 20 5.6.15 Route metric 20 5.6.16 Synchronous service parameters . 21 5.6.17
25、Asynchronous service parameters . 21 5.6.18 Link-specific resource allocations 22 5.6.19 End-to-end delay . 22 BS EN 62379-5-2:2014IEC 62379-5-2:2014 IEC 2014 3 5.6.20 Route identifier of multicast . 22 5.6.21 Cause 23 5.6.22 Route and flow selection 23 5.6.23 Alternatives . 23 5.6.24 Group 23 5.6.2
26、5 Interim offer . 24 5.6.26 Path MTU 24 5.6.27 Number of destinations 25 5.6.28 Selector for an individual destination . 25 5.6.29 User data 25 5.6.30 Extended IE types . 25 6 Protocols 26 6.1 General . 26 6.2 Establishing a route . 27 6.2.1 Connection of flows . 27 6.2.2 Request message 27 6.2.3 Ac
27、tion on receiving a FindRoute request . 29 6.2.4 Action on receiving on a FindRoute response 31 6.2.5 Passing on a FindRoute confirmation 33 6.2.6 Action of the responder on receiving a FindRoute confirmation 33 6.2.7 FindRoute completion message . 33 6.3 Disconnection of routes and flows . 34 6.3.1
28、 General . 34 6.3.2 ClearDown request message . 34 6.3.3 Action on receiving a ClearDown request message 35 6.4 Adding new flows to an existing route 35 6.5 Information messages related to a route 35 6.5.1 General . 35 6.5.2 Notification of the number of destinations 36 6.5.3 Changing service parame
29、ters 36 6.5.4 Out-of-band data . 36 6.6 Quasi-connectionless service 36 6.6.1 General . 36 6.6.2 Request message 36 6.6.3 Action on receiving request . 37 7 Media formats 37 7.1 Identification 37 7.2 Packet data . 37 7.2.1 General packet data 37 7.2.2 Other packet formats . 38 7.3 Pulse-code modulat
30、ed audio . 38 7.3.1 Rationale . 38 7.3.2 Sequencing octet . 38 7.3.3 Subframe format 39 7.3.4 Frame format . 39 7.3.5 Transport . 40 7.3.6 Signalling of format 40 8 Cause codes 42 8.1 ITU-T standard cause codes 42 BS EN 62379-5-2:2014 4 IEC 62379-5-2:2014 IEC 2014 8.2 Other cause codes 42 Annex A (i
31、nformative) Background 43 Bibliography 52 Figure 1 Structure of flow identifier 10 Figure 2 Signalling message format . 13 Figure 3 Signalling message header 13 Figure 4 Information element header 15 Figure 5 Information element with a nonempty fixed part and a variable part 15 Figure 6 Fixed part o
32、f FlowDescriptor IE 18 Figure 7 Fixed part of multicast route identifier IE 22 Figure 8 Sequencing octet . 38 Figure 9 “Short” bit string value 38 Figure 10 “Long” bit string value 39 Table 1 Address type codes . 12 Table 2 Message class 13 Table 3 Message type 14 Table 4 Information element types .
33、 17 BS EN 62379-5-2:2014IEC 62379-5-2:2014 IEC 2014 7 INTRODUCTION IEC 62379 specifies the Common Control Interface, a protocol for managing networked audiovisual equipment. The following parts exist or are planned: 1 General 2 Audio 3 Video 4 Data 5 Transmission over networks 6 Packet transfer serv
34、ice 7 Measurement IEC 62379-1:2007 specifies aspects which are common to all equipment, and it includes an introduction to the Common Control Interface. IEC 62379-2:2008, IEC 62379-3 (under consideration) and IEC 62379-4 (under consideration) specify control of internal functions specific to equipme
35、nt carrying particular types of live media. IEC 62379-4 refers to time-critical data such as commands to automation equipment, but not to packet data such as the control messages themselves. IEC 62379-5 specifies control of transmission of these media over each individual network technology. It incl
36、udes network specific management interfaces along with network specific control elements that integrate into the control framework. IEC 62379-5-1 specifies management of aspects which are common to all network technologies. IEC 62379-5-3 onwards specify management of aspects which are particular to
37、individual networking technologies. IEC 62379-5-2 (this standard) specifies protocols which can be used between networking equipment to enable the setting up of calls which are routed across different networking technologies. IEC 62379-6 specifies carriage of control and status messages and non-audi
38、ovisual data over transports that do not support audio and video, such as RS232 serial links, with (as for IEC 62379-5) a separate subpart for each technology. IEC 62379-7 specifies aspects that are specific to the measurement of the service experienced by audio and video streams and in particular t
39、o the requirements of EBU ECN-IPM Measurements Group. BS EN 62379-5-2:2014 8 IEC 62379-5-2:2014 IEC 2014 COMMON CONTROL INTERFACE FOR NETWORKED DIGITAL AUDIO AND VIDEO PRODUCTS Part 5-2: Transmission over networks Signalling 1 Scope This part of IEC 62379 specifies protocols which can be used betwee
40、n networking equipment to enable the setting up of calls which are routed across different networking technologies. It also specifies encapsulation of digital media within those calls. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document an
41、d are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60958 (all parts), Digital audio interface IEC 62365:2009, Digital audio Digital input-output i
42、nterfacing Transmission of digital audio over asynchronous transfer mode (ATM) networks IEC 62379 (all parts), Common control interface for networked digital audio and video products IEC 62379-1, Common control interface for networked digital audio and video products Part 1: General IEC 62379-2:2008
43、, Common control interface for networked digital audio and video products Part 2: Audio IEC 62379-5-1, Common control interface for networked digital audio and video products Part 5-1: Transmission over networks General 1ITU-T Recommendation Q.850, Usage of cause and location in the digital subscrib
44、er signalling system No. 1 and the signalling system No.7 ISDN used part AES53, AES standard for digital audio Digital input-output interfacing Sample-accurate timing in AES47 (Audio Engineering Society, New York, NY, USA) 3 Terms and definitions For the purposes of this document, the terms and defi
45、nitions given in IEC 62379-1 and the following apply. _ 1To be published. BS EN 62379-5-2:2014IEC 62379-5-2:2014 IEC 2014 9 3.1 adjacent such that data can be sent from one to the other without passing through any other network element 3.2 asynchronous flow flow consisting of data units for which th
46、e time of arrival at the destination is less important 3.3 asynchronous service best-effort point-to-point service carrying asynchronous flows 3.4 call identifier first 12 octets of a flow identifier Note 1 to entry: See 4.3. 3.5 connectionless data unit data unit which is not part of a flow 3.6 dat
47、a unit sequence of one or more octets which is conveyed across the network as a single unit 3.7 end equipment equipment that is connected to the network and produces or consumes data units 3.8 extended unique identifier EUI-64 64-bit globally unique identifier, the first 24 or 36 bits of which are a
48、n organizationally unique identifier (OUI) administered by the Institute of Electrical and Electronics Engineers (IEEE) Note 1 to entry: The extended unique identifier contains 64 bit. 3.9 flow sequence of data units 3.10 information element IE element of a message, in tag-length-value format 3.11 l
49、ink means by which data units are conveyed between adjacent network elements 3.12 network delay time from submission of a data unit to the network by the sender to its delivery to the recipient BS EN 62379-5-2:2014 10 IEC 62379-5-2:2014 IEC 2014 3.13 network element piece of equipment which takes part in the process of conveying data and conforms to this Standard EXAMPLES: Switches, gateways, and interfaces, but not equipment internal to legacy ne
