1
Scope
1.1 Block diagram and functional
elements
1.2 System elements outside the scope
of this Recommendation
1.3 Functional elements covered by
this Recommendation
2 References
3 Definitions
4 Abbreviations
5 Conventions
6 Functional requirements
6.1 Required elements
6.2 Information streams
6.3 Modem
6.4 Multiplex
6.4.1 Logical channel numbers
6.4.2 Multiplex table entries
6.4.3 Flow control
6.4.4 Error control
6.4.5 Adaptation layers
6.5 Control channel
6.5.1 Capabilities exchange
6.5.2 Logical channel signalling
6.5.3 Mode preferences
6.5.4 Interface to multiplex
6.5.5 Timer and counter values and protocol errors
6.6 Video channels
6.6.1 Interface to multiplex
6.7 Audio channels
6.7.1 Delay compensation
6.7.2 Maximum delay jitter
6.7.3 Interface to multiplex
6.7.4 Use of ITU-T Rec. G.722.1 for wideband audio
6.8 Data channels
6.8.1 Data protocols
6.8.2 Data applications
7 Terminal procedures
7.1 Phase A – Call set-up of
voiceband channel
7.2 Phase B – Initial
analogue telephony communication
7.2.1 V.8 procedure
7.2.2 V.8 bis procedure
7.3 Phase C – Establishment
of digital communication, modem training
7.3.1 V.8 procedure
7.3.2 V.8 bis procedure
7.4 Phase D – Initialization
7.4.1 Exchange of video by mutual agreement
7.5 Phase E – Communication
7.5.1 Rate changes and retrains
7.5.2 Involuntary disconnection
7.6 Phase F – End of session
7.7 Phase G – Supplementary
services and call clearing
8 Interoperation with other
terminals
8.1 Speech only terminals
8.2 H.320 multimedia telephone
terminals over the ISDN
8.3 Multimedia telephone terminals
over mobile radio
9 Optional enhancements
9.1 Data facilities
9.2 Encryption
9.2.1 EncryptionSE messages
9.2.2 Encryption initialization vector (EIV) channel
9.2.3 Encryption procedure
9.2.4 Encryption initialization vectors
9.2.5 Error recovery
9.3 Multilink
10 Multipoint considerations
10.1 Establishment of common mode
10.2 Multipoint rate matching
10.3 Multipoint lip synchronization
10.4 Multipoint encryption
10.5 Cascaded MCU operation
11 Maintenance
11.1 Loopbacks for maintenance purposes
11.1.1 Normal mode
11.1.2 System loopback
11.1.3 Media loopback
11.1.4 Logical channel loopback
Annex A – Protocol
stack for control channel
A.1 General
A.2 SRP mode
A.2.1 SRP command frames
A.2.2 SRP response frames
A.2.3 SRP procedure at transmitter
A.2.4 SRP procedure at receiver
A.2.5 Numbered SRP Response Frames (NSRP)
A.3 LAPM/V.42 mode
Annex B – HDLC frame
structure transparency for asynchronous transmission
Annex C – Multimedia
telephone terminals over error prone channels
C.1 Abstract
C.2 General
C.3 Changes to procedures
C.4 Interworking
C.5 Terminal procedures
C.6 Initialization of multiplex level
at the start of a session
C.6.1 Definition of stuffing sequences
C.6.2 Definition of level set-up procedure
C.6.3 Definition of the parameters for the control channel
C.6.4 Definition of other parameters
C.7 Dynamic change of level or option during
session
C.8 Control channel definition for
mobile terminals
C.8.1 Control Channel Segmentation and Reassembly Layer (CCSRL)
C.8.2 NSRP mode
C.8.3 LAPM/V.42
mode
Annex D – Operation
on ISDN circuits (H.324/I)
D.1 Scope
D.2 References
D.3 Definitions
D.4 Functional requirements
D.4.1 Modem interface
D.4.2 H.320 ISDN interoperation
D.4.3 H.324 GSTN interoperation
D.4.4 Voice telephone interoperation
D.4.5 NSRP support for H.245 control channel
D.4.6 V.140 support
D.4.7 terminalOnHold
D.5 Terminal procedures
D.5.1 Phase A – Call set-up of digital channel
D.5.2 Phase B – Initial telephony communication
D.5.3 Phase C – Establishment of digital communication
D.5.4 Phases D through G
Annex E – Timer T401
initialization for operation over geostationary satellite channels
E.1 Introduction
E.2 Determination of timer value
E.3 Timer tuning procedure
Annex F – Multilink
operation
F.1 Scope
F.2 References
F.3 Functional requirements
F.4 Overview
F.5 Procedures
F.5.1 Establishing multilink H.324 operation
F.5.2 Adding physical connections
F.5.3 Removing physical connections
F.5.4 Negotiating the Maximum Header Interval
F.5.5 Using the optional data CRC
F.5.6 Using the excessive error indication
F.6 Maximum Transmit Skew
F.7 Sequence diagram for establishment
of multilink operation
Annex G
– Usage of ISO/IEC 14496-1 generic capabilities in H.324 terminals
G.1 Scope
G.2 References
G.3 General
G.4 Choice of error protection for
ISO/IEC 14496 data streams
G.5 Framing of ISO/IEC 14496-1 data streams
Annex H – Mobile
multilink operation
H.1 Scope
H.2 Definitions and format conventions
H.2.1 Definition of terms
H.2.2 Format conventions
H.3 Functional requirements
H.4 Overview
H.5 Mobile Multilink layer
specification
H.5.1 Overview
H.5.2 Mobile multilink framing
H.5.3 Stuffing frames
H.5.4 Information frames
H.6 Procedures
H.6.1 Establishing Mobile Multilink operation
H.6.2 Adding physical connections
H.6.3 Removing physical connections
H.7 Header modes
H.7.1 Full header mode
H.7.2 Compressed header mode
H.7.3 Mode Transition (from full header to compressed header)
H.7.4 Transition from compressed header mode to full header mode
Annex I – Usage of HTTP
Generic Capability in H.324 terminals
I.1 General
I.2 Logical channel for HTTP
I.3 HTTP Generic Capability
I.4 References
Appendix I – Bit and
octet order
Appendix
II – V.8 bis codepoints