1 Scope
2 References
2.1 Normative references
2.2 Informative references
and bibliography
3 Terms and Definitions
4 Abbreviations
5 Conventions
5.1 Recommendation version
6
Definition of the VBD mode of operation
6.1
Minimum requirements for VBD mode of
operation
7 Negotiation of support of VBD and
selection of VBD codec and other VBD enhanced functionality
7.1 Negotiation using
Session Description Protocol (SDP)
7.2 Use of VBD in H.323
systems
8 The use of RFC 2833
modem/facsimile/text telephone events
9 VBD stimuli
10
Procedures
for transitioning between audio mode and VBD mode
11
Optional
procedures for indicating to a remote end transition into VBD using State
Signalling Events (SSEs)
11.1 Declaration of SSEs
11.2 Transition to the VBD
mode for V.150.1 gateways
11.3 Transition to the VBD
mode for non-V.150 cases
11.4 Transition from the VBD
media mode
11.5 Security – Optional
Annex A –
Vendor-defined messages