Superseded by a more recent version
`
`1’ ¢\
`‘S
`
`\3’
`
`W INTERNATIONAL TELECOMMUNICATION UNION
`
`
`
`ITU -T
`
`TELECOMMUNICATlON
`STANDARDIZATION SECTOR
`OF ITU
`
`V
`
`H.245
`
`(02/98)
`
`SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS
`
`Infrastructure of audiovisual services — Communication
`
`procedures
`
`Control protocol for multimedia communication
`
`ITU-T Recommendation H.245
`
`Superseded by a more recent version
`
`(Previously CCITT Recommendation)
`
`Petitioner Apple Inc. - Exhibit 1085, Cover
`
`Petitioner Apple Inc. - Exhibit 1085, Cover
`
`

`

`Superseded by a more recent version
`ITU-T H-SERIES RECOMMENDATIONS
`
`AUDIOVISUAL AND MULTIMEDIA SYSTEMS
`
`Characteristics of transmission channels used for other than telephone purposes
`Use of telephone-type circuits for voice-frequency telegraphy
`
`Telephone circuits or cables used for various types of telegraph transmission or
`simultaneous transmission
`
`Telephone-type circuits used for facsimile telegraphy
`Characteristics of data signals
`CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS
`INFRASTRUCTURE OF AUDIOVISUAL SERVICES
`
`General
`
`Transmission multiplexing and synchronization
`Systems aspects
`
`H.10—H.1 9
`H.20—H.29
`
`H.30-H.39
`
`H.40—H.49
`H.50-H.99
`H.100—H.199
`
`H.200—H.219
`
`H.220~H.229
`H.230—H.239
`
`H.260—H.279
`H.280—H.299
`
`‘
`
`H.300—H.399
`
`Coding of moving video
`Related systems aspects
`
`‘
`
`L
`
`‘
`
`'
`
`'
`
`'
`
`Systems and terminal equipment for audiovisual services
`
`Forfurther details, please refer to 1TU-TList ofRecommendations.
`
`Petitioner Apple Inc. - Exhibit 1085, Cover 2
`
`Petitioner Apple Inc. - Exhibit 1085, Cover 2
`
`

`

`Superseded by a more recent version
`
`ITU-T RECOMMENDATION H.245
`
`CONTROL PROTOCOL FOR MULTIMEDIA COMMUNICATION
`
`Summary
`
`This Recommendation specifies syntax and semantics of terminal information messages as well as
`procedures to use them for in—band negotiation at the start of or during communication. The
`messages cover receiving and transmitting capabilities as well as mode preference from the
`receiving end,
`logical channel signalling, and Control and Indication. Acknowledged signalling
`procedures are specified to ensure reliable audiovisual and data communication.
`
`Source
`
`ITU-T Recommendation H.245 was revised by ITU-T Study Group 16 (1997-2000) and was
`approved under the WTSC Resolution No. 1 procedure on the 6th of February 1998.
`
`Petitioner Apple Inc. - Exhibit 1085, p. i
`
`Petitioner Apple Inc. - Exhibit 1085, p. i
`
`

`

`Superseded by a more recent version
`
`FOREWORD
`
`ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of
`telecormnunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of
`the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing
`Recommendations on them with a View to standardizing telecommunications on a worldwide basis.
`
`The World Telecommunication Standardization Conference (WTSC), which meets every four years,
`establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations
`on these topics.
`
`The approval of Recommendations by the Members of the ITU—T is covered by the procedure laid down in
`WTSC Resolution No. 1.
`
`In some areas of information technology which fall within ITU—T’s purview, the necessary standards are
`prepared on a collaborative basis with ISO and IEC.
`
`the expression "Administration" is used for conciseness to indicate both a
`In this Recommendation,
`telecommunication administration and a recognized operating agency.
`
`NOTE
`
`INTELLECTUAL PROPERTY RIGHTS
`
`The ITU draws attention to the possibility that the practice or implementation of this Recommendation may
`involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence,
`validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others
`outside of the Recommendation development process.
`
`As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property,
`protected by patents, which may be required to implement this Recommendation. However, implementors are
`cautioned that this may not represent the latest information and are therefore strongly urged to consult the
`TSB patent database.
`
`All rights reserved. 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 the ITU.
`
`© ITU 1998
`
`ii
`
`Recommendation H.245
`
`(02/98)
`
`Superseded by a more recent version
`
`Petitioner Apple Inc. - Exhibit 1085, p. ii
`
`Petitioner Apple Inc. - Exhibit 1085, p. ii
`
`

`

`Superseded by a more recent version
`
`CONTENTS
`
`Scope ...........................................................................................................................
`
`References ...................................................................................................................
`
`Definitions ..................................................................................................................
`
`Abbreviations ..............................................................................................................
`
`General ........................................................................................................................
`
`Master—slave determination ........................................................................................
`
`Capability exchange ....................................................................................................
`
`Logical channel signalling procedures .......................................................................
`
`Receive terminal close logical channel request ..........................................................
`
`H.223 multiplex table entry modification ...................................................................
`
`Audiovisual and data mode request ............................................................................
`
`Round—trip delay determination ..................................................................................
`
`Maintenance loops ......................................................................................................
`
`Commands and indications .........................................................................................
`
`Messages: syntax ........................................................................................................
`
`Messages: semantic definitions ..................................................................................
`
`Master Slave Determination messages .......................................................................
`
`7.1.1 Master Slave Determination ..........................................................................
`
`7.1.2 Master Slave Determination Acknowledge ...................................................
`
`7.1.3 Master Slave Determination Reject ...............................................................
`
`7.1.4 Master Slave Determination Release .............................................................
`
`Terminal capability messages .....................................................................................
`
`7.2.1
`
`Overview .......................................................................................................
`
`7.2.2
`
`Terminal Capability Set .................................................................................
`
`7.2.3
`
`Terminal Capability Set Acknowledge ..........................................................
`
`7.2.4
`
`Terminal Capability Set Reject .....................................................................
`
`7.2.5
`
`Terminal Capability Set Release ...................................................................
`
`Logical channel signalling messages ..........................................................................
`
`7.3.1
`
`Open Logical Channel ...................................................................................
`
`7.3.2 Open Logical Channel Acknowledge ............................................................
`
`7.3.3 Open Logical Channel Reject ........................................................................
`
`7.3.4 Open Logical Channel Confirm ....................................................................
`
`7.3.5
`
`Close Logical Channel...................................................................................
`
`7.3.6
`
`Close Logical Channel Acknowledge ...........................................................
`
`5.1
`
`5.2
`
`5.3
`
`5.4
`
`5.5
`
`5.6
`
`5.7
`
`5.8
`
`5.9
`
`7.1
`
`7.2
`
`7.3
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`Recommendation H.245
`
`(02/98)
`
`Superseded by a more recent version
`
`iii
`
`Petitioner Apple Inc. - Exhibit 1085, p. iii
`
`Petitioner Apple Inc. - Exhibit 1085, p. iii
`
`

`

`Superseded by a more recent version
`
`7.3.7
`
`Request Channel Close ..................................................................................
`
`7.3.8
`
`Request Channel Close Acknowledge ...........................................................
`
`7.3.9
`
`Request Channel Close Reject .......................................................................
`
`7.3.10 Request Channel Close Release ....................................................................
`
`Multiplex Table signalling messages ..........................................................................
`
`7.4.1 Multiplex Entry Send ....................................................................................
`
`7.4.2 Multiplex Entry Send Acknowledge .............................................................
`
`7.4.3 Multiplex Entry Send Reject .........................................................................
`
`7.4.4 Multiplex Entry Send Release .......................................................................
`
`Request Multiplex Table signalling messages ............................................................
`
`7.5.]
`
`Request Multiplex Entry................................................................................
`
`7.5.2
`
`Request Multiplex Entry Acknowledge ........................................................
`
`7.5.3
`
`Request Multiplex Entry Reject ....................................................................
`
`7.5.4 Request Multiplex Entry Release ..................................................................
`
`Request Mode messages .............................................................................................
`
`7.6.1
`
`Request Mode ................................................................................................
`
`7.6.2 Request Mode Acknowledge .........................................................................
`
`7.6.3
`
`Request Mode Reject .....................................................................................
`
`7.6.4
`
`Request Mode Release ...................................................................................
`
`Round Trip Delay messages .......................................................................................
`
`7.7.1
`
`Round Trip Delay Request ............................................................................
`
`7.7.2
`
`Round Trip Delay Response ..........................................................................
`
`Maintenance Loop messages ......................................................................................
`
`7.8.1 Maintenance Loop Request ...........................................................................
`
`7.8.2 Maintenance Loop Acknowledge ..................................................................
`
`7.8.3 Maintenance Loop Reject ..............................................................................
`
`7.8.4 Maintenance Loop Command Off.................................................................
`
`Communication Mode Messages ................................................................................
`7.9.1
`Communication Mode Command..................................................................
`
`7.4
`
`7.5
`
`7.6
`
`7.7
`
`7.8
`
`7.9
`
`7.9.2
`
`Communication Mode Request .....................................................................
`
`7.9.3
`
`Communication Mode Response ...................................................................
`
`7.10
`
`Conference Request and Response Messages ............................................................
`
`7.10.1 Terminal List Request ...................................................................................
`
`7.10.2 Terminal List Response .................................................................................
`7.10.3 Make Me Chair ..............................................................................................
`
`7.10.4 Cancel Make Me Chair ..................................................................................
`
`7.10.5 Make Me Chair Response..............................................................................
`
`7.10.6 Drop Terminal ...............................................................................................
`
`iv
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`Recommendation H.245
`
`(02/98)
`
`Superseded by a more recent version
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`Petitioner Apple Inc. - Exhibit 1085, p. iV
`
`Petitioner Apple Inc. - Exhibit 1085, p. iv
`
`

`

`Superseded by a more recent version
`
`7.10.7 Terminal Drop Reject ....................................................................................
`
`7.10.8 RequestTerminalID.......................................
`
`7.10.9 MC Terminal ID Response ............................................................................
`
`7.10.10 Enter H.243 Password Request .....................................................................
`
`7.10.11 Password Response ........................................................................................
`
`7.10.12 Enter H.243 Terminal ID Request .................................................................
`
`7.10.13 Terminal ID Response ...................................................................................
`
`7.10.14 Enter H.243 Conference ID Request .............................................................
`
`7.10.15 Conference ID Response ...............................................................................
`
`7.10.16 Video Command Reject.................................................................................
`
`7.10.17 Enter Extension Address Request .................................................................
`
`7.10.18 Extension Address Response .........................................................................
`
`7.10.19 Request Chair Control Token Owner ............................................................
`
`7.1.0.20 Chair Token Owner Response .......................................................................
`
`7.10.21 Request Terminal Certificate .........................................................................
`
`7.10.22 Terminal Certificate Response ......................................................................
`
`7.1023 Broadcast My Logical Channel .....................................................................
`
`7.10.24 Broadcast My Logical Channel Response .....................................................
`7.10.25 Make Terminal Broadcaster ..........................................................................
`
`7.10.26 Make Terminal Broadcaster Response ..........................................................
`7.10.27 Send This Source ...........................................................................................
`
`7.10.28 SendThis Source Response ............................................................................
`
`7.10.29 Request All Terminals Ids .............................................................................
`
`7.10.30 Request All Terminal Ids Response ..............................................................
`
`7.10.31 RemoteMC Request .......................................................................................
`
`7.10.32 RemoteMC Response ....................................................................................
`
`7.1 1
`
`Commands ..................................................................................................................
`
`7.1 1.1 Send Terminal Capability Set ........................................................................
`
`7.11.2 Encryption .....................................................................................................
`7.11.3 Flow Control ..................................................................................................
`
`7.11.4 End session ....................................................................................................
`
`7.11.5 Miscellaneous Command ..............................................................................
`
`7.11.6 Conference Command ...................................................................................
`
`7.11.7 H.223 Multiplex Reconfiguration .................................................................
`
`7.12
`
`Indications ...................................................................................................................
`
`7.12.1 Function Not Understood ..............................................................................
`
`7.12.2 Miscellaneous Indication ...............................................................................
`
`7.12.3 Jitter Indication ..............................................................................................
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`l 12
`
`Recommendation H.245
`
`(02/98)
`
`Superseded by a more recent version
`
`v
`
`Petitioner Apple Inc. - Exhibit 1085, p. V
`
`Petitioner Apple Inc. - Exhibit 1085, p. v
`
`

`

`Superseded by a more recent version
`
`7.12.4 H.223 Skew Indication ..................................................................................
`
`7.12.5 New ATM Virtual Channel Indication ..........................................................
`
`7.12.6 User Input ......................................................................................................
`7.12.7 Conference Indications ..................................................................................
`
`7.12.8 H2250 Maximum Logical Channel Skew .....................................................
`7.12.9 MC Location Indication ................................................................................
`
`7.12.10 Vendor Identification Indication ...................................................................
`
`7.12.1 1 Function Not Supported.................................................................................
`
`8
`
`8.1
`
`Procedures ...................................................................................................................
`
`Introduction .................................................................................................................
`
`8.1.1 Method of specification .................................................................................
`
`8.1.2
`
`Communication between protocol entity and protocol user ..........................
`
`8.1.3
`
`Peer-to—peer communication..........................................................................
`
`8.1.4
`
`SDL diagrams ................................................................................................
`
`8.1.5
`
`SDL Key ........................................................................................................
`
`8.2
`
`Master slave determination procedures ......................................................................
`8.2.1
`Introduction ...................................................................................................
`
`8.2.2
`
`Communication between the MSDSE and the MSDSE user ........................
`
`8.2.3
`
`Peer-to—peer MSDSE communication ...........................................................
`
`8.2.4 MSDSE procedures .......................................................................................
`
`8.3
`
`Capability exchange procedures .................................................................................
`8.3.1
`Introduction ...................................................................................................
`
`8.3.2
`
`Communication between CESE and CESE user ...........................................
`
`8.3.3
`
`Peer to peer CESE communication ...............................................................
`
`8.3.4
`
`CESE procedures ...........................................................................................
`
`8.4
`
`Uni—directional Logical Channel signalling procedures .............................................
`8.4.1
`Introduction ...................................................................................................
`
`8.4.2
`
`Communication between the LCSE and the LCSE user ...............................
`
`8.4.3
`
`Peer—to—peer LCSE communication ...............................................................
`
`8.4.4
`
`LCSE procedures ...........................................................................................
`
`8.5
`
`Bi—directional Logical Channel signalling procedures ...............................................
`8.5.1
`Introduction ...................................................................................................
`
`8.5.2
`
`Communication between the B-LCSE and the B—LCSE user .......................
`
`8.5.3
`
`Peer-to-peer B-LCSE communication ...........................................................
`
`8.5.4
`
`B—LCSE procedures .......................................................................................
`
`8.6
`
`Close Logical Channel procedures .............................................................................
`
`8.6.1
`
`Introduction ...................................................................................................
`
`8.6.2
`
`Communication between CLCSE and CLCSE user ......................................
`
`Vi
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`
`(02/98)
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`Superseded by a more recent version
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`Petitioner Apple Inc. - Exhibit 1085, p. Vi
`
`Petitioner Apple Inc. - Exhibit 1085, p. vi
`
`

`

`Superseded by a more recent version
`
`8.6.3
`
`Peer—to—peer CLCSE communication ............................................................
`
`8.6.4
`
`CLCSE procedures ........................................................................................
`
`8.7
`
`H.223 Multiplex Table Procedures .............................................................................
`8.7.1
`Introduction ...................................................................................................
`
`8.7.2
`
`Communication between the MTSE and MTSE user ...................................
`
`8.7.3
`
`Peer-to-peer MTSE communication ..............................................................
`
`8.7.4 MTSE procedures ..........................................................................................
`
`8.8
`
`Request Multiplex Entry procedures ..........................................................................
`8.8.1
`Introduction ...................................................................................................
`
`8.8.2
`
`Communication between RMESE and RMESE user ....................................
`
`8.8.3
`
`Peer-to-peer RMESE communication ...........................................................
`
`8.8.4
`
`RMESE procedures .......................................................................................
`
`8.9
`
`Mode Request procedures ...........................................................................................
`8.9.1
`Introduction ...................................................................................................
`
`8.9.2
`
`Communication between MRSE and MRSE user .........................................
`
`8.9.3
`
`Peer—to—peer MRSE communication ..............................................................
`
`8.9.4 MRSE procedures ..........................................................................................
`
`8.10
`
`Round trip delay procedures .......................................................................................
`8.10.1
`Introduction ...................................................................................................
`
`8.10.2 Communication between the RTDSE and the RTDSE user..........................
`
`8.10.3 Peer-to-peer RTDSE communication ............................................................
`
`8.10.4 RTDSE procedures ........................................................................................
`
`8.11 Maintenance Loop procedures ....................................................................................
`8.1 1.1
`Introduction ...................................................................................................
`
`8.11.2 Communication between the MLSE and the MLSE user..............................
`
`8.1 1.3 Peer-to-peer MLSE communication ..............................................................
`
`8.11.4 MLSE procedures ..........................................................................................
`
`Annex A — Object identifier assignments ................................................................................
`
`Appendix I — Overview of ASN.1 syntax ................................................................................
`
`L1
`
`I2
`
`L3
`
`L4
`
`Introduction to ASN.1 .................................................................................................
`
`Basic ASN.1 data types ..............................................................................................
`
`Aggregate data types ...................................................................................................
`
`Object Identifier type ..................................................................................................
`
`Appendix II — Examples of H.245 procedures .........................................................................
`
`II. 1
`
`112
`
`Introduction .................................................................................................................
`
`Master Slave Determination Signalling Entity ...........................................................
`
`Page
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`Recommendation H.245
`
`(02/98)
`
`Superseded by a more recent version
`
`vii
`
`Petitioner Apple Inc. - Exhibit 1085, p. Vii
`
`Petitioner Apple Inc. - Exhibit 1085, p. vii
`
`

`

`Superseded by a more recent version
`
`113
`
`11.4
`
`11.5
`
`11.6
`
`11.7
`
`11.8
`
`11.9
`
`Capability Exchange Signalling Entity .......................................................................
`
`Logical Channel Signalling Entity..............................................................................
`
`Close Logical Channel Signalling Entity ...................................................................
`
`Multiplex Table Signalling Entity ..............................................................................
`
`Mode Request Signalling Entity .................................................................................
`
`Round Trip Delay Signalling Entity ...........................................................................
`
`Bi-directional Logical Channel Signalling Entity ......................................................
`
`Appendix 111— Summary of procedure timers and counters ....................................................
`
`111. 1
`
`Timers .........................................................................................................................
`
`111.2
`
`Counters ......................................................................................................................
`
`Appendix 1V — H.245 Extension Procedure .............................................................................
`
`Appendix V — The ReplacementFor Procedure .......................................................................
`
`Appendix V1 — 249 Examples of H.263 Capability Structure Settings ...................................
`
`V1.1
`
`Examples of Enhancement Layer H.245 parameter setting ........................................
`
`V1.2
`
`Examples of Video Back Channel H.245 parameter setting ......................................
`
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`viii
`
`Recommendation H.245
`
`(02/98)
`
`Superseded by a more recent version
`
`Petitioner Apple Inc. - Exhibit 1085, p. Viii
`
`Petitioner Apple Inc. - Exhibit 1085, p. viii
`
`

`

`Superseded by a more recent version
`
`Recommendation H.245
`
`CONTROL PROTOCOL FOR MULTIMEDIA COMMUNICATION
`
`(revised in I 998)
`
`1
`
`Scope
`
`This Recommendation specifies syntax and semantics of terminal information messages as well as
`procedures to use them for in—band negotiation at the start of or during communication. The
`messages cover receiving and transmitting capabilities as well as mode preference from the
`receiving end, logical channel signalling, and Control and Indication. Acknowledged signalling
`procedures are specified to ensure reliable audiovisual and data communication.
`
`This Recommendation covers a wide range of applications, including storage/retrieval, messaging
`and distribution services as well as conversational. It applies to, but is not limited to, multimedia
`systems that use the multiplexes defined in Recommendations H.222.0, H.223 and H.225.0. These
`different systems share the same syntax and semantics, and are therefore bit-wise compatible. Some
`of the procedures are applicable to all systems, while the others are more specific to particular
`systems.
`
`The different systems that make use of this Recommendation may specify the use of different
`transport protocols. However, it is intended to be used with a reliable transport layer, that is, one that
`provides guaranteed delivery of correct data.
`
`NOTE — There should be no confusion with the T.120 management system, which is carried within the data
`stream, and covers different functionalities from those described here — the H.245 stream and the T. lZO-data
`stream are complementary.
`
`2
`
`References
`
`The following ITU—T Recommendations and other references contain provisions which, through
`reference in this text, constitute provisions of the Recommendation. At the time of publication, the
`editions indicated were valid. All Recommendations and other references are subject to revision; all
`users of this Recommendation are therefore encouraged to investigate the possibility of applying the
`most recent edition of the Recommendations and other references listed below. A list of the currently
`valid ITU—T Recommendations is regularly published.
`
`[1]
`
`[2]
`
`[3]
`
`[4]
`
`[5]
`
`[6]
`
`ITU-T Recommendation E.164 (1997), The
`numbering plan.
`
`international public telecommunication
`
`CCITT Recommendation G.7ll
`frequencies.
`
`(1988), Pulse Code Modulation (PCM of voice
`
`CCITT Recommendation G.722 (1988), 7 kHz audio-coding within 64 kbit/s.
`
`ITU-T Recommendation G.723.1 (1996), Dual
`communication transmitting at 5.3 and 6.3 kbit/s.
`
`rate speech coder for multimedia
`
`CCITT Recommendation G.728 (1992), Coding ofspeech at 16 kbit/s using low-delay code
`excited linear prediction.
`
`ITU—T Recommendation G.729 (1996), Coding of speech at 8 kbit/s using conjugate
`structure algebraic-code—excited linear—prediction (CS-ACELP).
`
`Recommendation H.245
`
`(02/98)
`
`Superseded by a more recent version
`
`1
`
`Petitioner Apple Inc. - Exhibit 1085, p. 1
`
`Petitioner Apple Inc. - Exhibit 1085, p. 1
`
`

`

`Superseded by a more recent version
`
`ITU-T Recommendation H.221 (1997), Frame structure for a 64 to 1920 kbit/s channel in
`audiovisual teleservices.
`
`ITU-T Recommendation H.222.0 (1996) I ISO/IEC 13818-1:1996, Information technology ——
`Generic coding ofmoving pictures and associated audio: Systems.
`
`ITU-T Recommendation H.222.1 (1996), Multimedia multiplex and synchronization for
`audiovisual communication in ATM environments.
`
`ITU-T Recommendation H.223 (1996), Multiplexing protocol for low bit rate multimedia
`communication.
`
`[TU—T Recommendation H.224 (1994), A real time control protocolfor simplex applications
`using the H.221 LSD/HSD/MLP channels.
`
`lTU-T