H.323 Standards

For a history of previously approved documents and for current work in progress, please refer to the document status page.

Draft H.323 Core Documents
Version	H.323	H.225.0	H.225.0 ASN.1	H.245	H.245 ASN.1	Implementers Guide, Errata
1996 (V1)	H.323v1	H.225.0v1	h2250v1.asn	H.245v2	H245v2.asn	Complete Text
1998 (V2)	H.323v2	H.225.0v2	h2250v2.asn	H.245v3	H245v3.asn	Document 1 + Document 2
1999 (V3)	H.323v3	H.225.0v3	h2250v3.asn	H.245v5	H245v5.asn	Complete Text
2000 (V4)	H.323v4	H.225.0v4	h2250v4.asn	H.245v7	H245v7.asn	Complete Text
2003 (V5)	H.323v5	H.225.0v5	h2250v5.asn	H.245v9	H245v9.asn	Complete Text
2006 (V6)	H.323v6	H.225.0v6 (Am1)	h2250v6.asn (Hypertext)	H.245v13	H245v13.asn (Hypertext)	Complete Text, H.245 Erratum 1, H.245 Erratum 2

NOTE:

The Implementers Guide must be read along with the standards. Important ITU-approved corrections are found in those documents. For some standards, the ITU-T has published Amendments and Corrigendum documents that must also be read with the standard. Please refer to the ITU-T Recommendations Page.

Other Related Draft Recommendations
Standard	Document Title and Related Documents
H.235v1	H.323 Security [Obsolete]
H.235v2	H.323 Security [Obsolete]
H.235v3	H.323 Security (See also Amendment 1 and Corrigendum 1 and Erratum to Corr. 1 and the Implementers Guide) [Obsolete]
H.235.0	Security framework for H-series (H.323 and other H.245-based) multimedia systems (a.k.a, H.235v4)
H.235.1	Baseline Security Profile
H.235.2	Signature Security Profile
H.235.3	Hybrid Security Profile
H.235.4	Direct and Selective Routed Call Security
H.235.5	Framework for secure authentication in RAS using weak shared secrets
H.235.6	Voice encryption profile with native H.235/H.245 key management (See also Amendment 1)
H.235.7	Usage of the MIKEY Key Management Protocol for SRTP
H.235.8	Key Exchange for SRTP using secure Signalling Channels
H.235.9	Security Gateway Support for H.323
H.239	Role management and additional media channels
H.241	Extended Video Procedures - H.264
H.245	Control Protocol for Multimedia Communication (links to H.245 page with all versions)
H.246	H.323/PSTN Interworking (See also Amendment 1)
H.246v2	H.323/PSTN Interworking
H.249	Extended User Input Indications
H.341	Multimedia management information base
H.350	Directory Services Architecture for Multimedia Conferencing
H.350 IG	H.350-Series Implementers Guide
H.350.1	Directory Services Architecture for H.323
H.350.2	Directory Services Architecture for H.235
H.350.6	Directory Services Architecture for Call Forwarding and Preferences
H.360	An architecture for end-to-end QoS control and signalling
H.361	End-to-End Quality of Service (QoS) and Service Priority Signalling in H.323 Systems (See also Amendment 1)
H.450.1	Supplementary Services Framework
H.450.2	Call Transfer Supplementary Service
H.450.3	Call Diversion Supplementary Service
H.450.4	Call Hold Supplementary Service
H.450.5	Call Park and Pickup Supplementary Service
H.450.6	Call Waiting Supplementary Service
H.450.7	Message Waiting Indication Supplementary Service
H.450.8	Name Identification Supplementary Service
H.450.9	Call Completion Supplementary Service
H.450.10	Call Offer Supplementary Service
H.450.11	Call Intrusion Supplementary Service
H.450.12	Common Information Additional Network Feature for H.323
H-Series Supplement 4	H.460.x Identifiers (H-Series Supplement 4)
H.460.1	Guidelines for the Use of the Generic Extensible Framework
H.460.2	Number Portability
H.460.3	Circuit Status Map
H.460.4	Call Priority Designation
H.460.4v2	Call Priority Designation and Country/International Network of Call Origination Identification
H.460.5	Transport of Multiple Q.931 IEs
H.460.6	Extended Fast Connect
H.460.7	Digit Maps
H.460.8	Querying for Alternate Routes
H.460.9	QoS Monitoring Reporting (ASN.1 File)
H.460.10	Call Party Category
H.460.11	Delayed Call Establishment
H.460.12	Glare Control Indicator
H.460.13	Called User Release Control
H.460.14	Multi-Level Precedence and Pre-emption
H.460.15	Call Signalling Transport Channel Suspension and Redirection
H.460.16	Multiple-Message Release Sequence Capability
H.460.17	Tunneling RAS through H.225.0
H.460.18	Traversal of H.323 signalling across Network Address Translators and Firewalls
H.460.19	Traversal of H.323 media across Network Address Translators and Firewalls
H.460.20	Location Number for H.323
H.460.21	Message Broadcast for H.323 Systems
H.460.22	Security Profile Negotiation (See also Corrigendum 1)
H.501	Protocol for mobility management and intra/inter-domain communication in multimedia systems (ASN.1 File)
H.510	Mobility for H.323 multimedia systems
H.530	Symmetric Security Procedures for H.510

Draft Annexes
Standard	Document Title
H.460.9 Annex B	RTCP Extended Reports

RTP-Related Documents
RFC	Document Title
RFC 1889	RTP: Transport Protocol for Real-Time Applications (obsolete: see RFC 3550)
RFC 1890	RTP Profile for Audio and Video Conferences with Minimal Control (obsolete: see RFC 3551)
RFC 2198	RTP Payload for Redundant Audio Data
RFC 2733	An RTP Payload Format for Generic Forward Error Correction (obsolete: see RFC 5109)
RFC 2793	RTP Payload for Text Conversation (obsolete: see RFC 4103)
RFC 2833	RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals (obsolete: see RFC 4733)
RFC 2959	Real-Time Transport Protocol Management Information Base
RFC 3389	RTP Payload for Comfort Noise
RFC 3611	RTP Control Protocol Extended Reports (RTCP XR)
RFC 3711	The Secure Real-time Transport Protocol (SRTP)
RFC 4103	RTP Payload for Text Conversation
RFC 4571	Framing RTP and RTCP Packets over Connection-Oriented Transport
RFC 4585	Extended RTP Profile for RTCP-Based Feedback (RTP/AVPF)
RFC 4586	RTP/AVPF: Results of the Timing Rule Simulations
RFC 4588	RTP Retransmission Payload Format
RFC 4771	Integrity Transform Carrying Roll-Over for SRTP
RFC 4733	RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
RFC 4961	Symmetric RTP / RTP Control Protocol
RFC 3550	RTP: Transport Protocol for Real-Time Applications
RFC 3551	RTP Profile for Audio and Video Conferences with Minimal Control
RFC 5109	RTP Payload Format for Generic Forward Error Correction
RFC 5117	RTP Topologies

ECMA TC32 - PBX (QSIG) Interworking Standards
ECMA	Document Title
ECMA-307	Corporate Telecommunication Networks - Signalling Interworking between QSIG and H.323 - Generic Functional Protocol for the Support of Supplementary Services
ECMA-308	Corporate Telecommunication Networks - Signalling Interworking between QSIG and H.323 - Call Transfer Supplementary Services
ECMA-309	Corporate Telecommunication Networks - Signalling Interworking between QSIG and H.323 - Call Diversion Supplementary Services
ECMA-326	Corporate Telecommunication Networks - Signalling Interworking between QSIG and H.323 - Call Completion Supplementary Services
ECMA-332	Corporate Telecommunication Networks - Signalling Interworking between QSIG and H.323 - Basic Services
ECMA-333	Private Integrated Services Network (PISN) - Mapping Functions for the Tunnelling of QSIG through H.323 Networks

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