1、 IEC 62379-5-2 Edition 1.0 2014-03 INTERNATIONAL STANDARD Common control interface for networked digital audio and video products Part 5-2: Transmission over networks Signalling IEC 62379-5-2:2014-03(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Geneva, Switzerland All rights reser
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11、 products Part 5-2: Transmission over networks Signalling INTERNATIONAL ELECTROTECHNICAL COMMISSION XA ICS 33.160; 35.100 PRICE CODE ISBN 978-2-8322-1455-8 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized d
12、istributor. 2 IEC 62379-5-2:2014 IEC 2014 CONTENTS FOREWORD . 5 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 General . 12
13、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 messages . 16 5
14、.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 End time 19 5
15、.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 Asynchronous
16、 service parameters . 21 5.6.18 Link-specific resource allocations 22 5.6.19 End-to-end delay . 22 IEC 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 5.6.25 Interim offer . 24 5.6.26 Path
17、 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 Action on receiving a FindRoute re
18、quest . 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 General . 34 6.3.2 ClearDown re
19、quest 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 parameters 36 6.5.4 Out-of-band data .
20、 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 modulated audio . 38 7.3.1 Rationale .
21、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 4 IEC 62379-5-2:2014 IEC 2014 8.2 Other cause codes 42 Annex A (informative) Background 43 Bibliography 52 Figure 1 St
22、ructure 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 of FlowDescriptor IE 18 Figure 7 Fixed part of multica
23、st 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 . 17 IEC 62379-5-2:2014 IEC 2014 5 INTERNATIONAL ELECT
24、ROTECHNICAL COMMISSION _ COMMON CONTROL INTERFACE FOR NETWORKED DIGITAL AUDIO AND VIDEO PRODUCTS Part 5-2: Transmission over networks Signalling FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical co
25、mmittees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Techni
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33、e or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publi
34、cation. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all su
35、ch patent rights. International Standard IEC 62379-5-2 has been prepared by technical area 4: Digital system interfaces and protocols of IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: CDV Report on voting
36、 100/2050/CDV 100/2158/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. A list of all parts in the IEC 62379 series, published under the general title Common control interface for networked digital audio and video
37、 products, can be found on the IEC website. 6 IEC 62379-5-2:2014 IEC 2014 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site
38、under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IEC 62379-5-2:2014 IEC 2014 7 INTRODUCTION IE
39、C 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 service 7 Measurement IEC 62379-1:2007 specifies aspects which are common
40、 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 equipment carrying particular types of live media. IEC 62379-4 refers to tim
41、e-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 includes network specific management interfaces along with network specif
42、ic 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 individual networking technologies. IEC 62379-5-2 (this standard) spe
43、cifies 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-audiovisual data over transports that do not support audio and video, suc
44、h 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 to the requirements of EBU ECN- IPM Measurements Group. 8 IEC 62379-5-
45、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 between networking equipment to enable the setting up of calls which are routed across differen
46、t 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 and are indispensable for its application. For dated references, only the edition cited app
47、lies. 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 interfacing Transmission of digital audio over asynchronous transfer mode (ATM) networks I
48、EC 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, Common control interface for networked digital audio and video products Part 2: Audio I
49、EC 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 subscriber 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 th
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