Real-Time Transport Protocol (RTP) Parameters

Last Updated: 2024-11-04
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Registries included below

RTP Payload Types (PT) for standard audio and video encodings - Closed
RTP Payload Format Media Types
RTCP Control Packet Types (PT)
RTP SDES Item Types
SMT Values for TOKEN Packet Type Registry
RTP Profile Names
FMT Values for RTPFB Payload Types
FMT Values for PSFB Payload Types
RTP Compact Header Extensions
RTP SDES Compact Header Extensions
Sub-Report Block Type (SRBT) Values for the RSI Packet
SFMT Values for RAMS Messages
RAMS TLV Space Registry
RAMS Response Code Space Registry
EKT Message Types
EKT Ciphers

RTP Payload Types (PT) for standard audio and video encodings - Closed

Registration Procedure(s)

Registry closed; see [RFC3551], Section 3

Reference

[RFC3551]

Note

The RFC "RTP Profile for Audio and Video Conferences with Minimal
Control" [RFC3551] specifies an initial set "payload types".  This
list maintains and extends that list.

Available Formats

CSV

PT	Encoding Name	Audio/Video (A/V)	Clock Rate (Hz)	Channels	Reference
0	PCMU	A	8000	1	[RFC3551]
1	Reserved
2	Reserved
3	GSM	A	8000	1	[RFC3551]
4	G723	A	8000	1	[Vineet_Kumar][RFC3551]
5	DVI4	A	8000	1	[RFC3551]
6	DVI4	A	16000	1	[RFC3551]
7	LPC	A	8000	1	[RFC3551]
8	PCMA	A	8000	1	[RFC3551]
9	G722	A	8000	1	[RFC3551]
10	L16	A	44100	2	[RFC3551]
11	L16	A	44100	1	[RFC3551]
12	QCELP	A	8000	1	[RFC3551]
13	CN	A	8000	1	[RFC3389]
14	MPA	A	90000		[RFC3551][RFC2250]
15	G728	A	8000	1	[RFC3551]
16	DVI4	A	11025	1	[Joseph_Di_Pol]
17	DVI4	A	22050	1	[Joseph_Di_Pol]
18	G729	A	8000	1	[RFC3551]
19	Reserved	A
20	Unassigned	A
21	Unassigned	A
22	Unassigned	A
23	Unassigned	A
24	Unassigned	V
25	CelB	V	90000		[RFC2029]
26	JPEG	V	90000		[RFC2435]
27	Unassigned	V
28	nv	V	90000		[RFC3551]
29	Unassigned	V
30	Unassigned	V
31	H261	V	90000		[RFC4587]
32	MPV	V	90000		[RFC2250]
33	MP2T	AV	90000		[RFC2250]
34	H263	V	90000		[Chunrong_Zhu]
35-71	Unassigned	?
72-76	Reserved for RTCP conflict avoidance				[RFC3551]
77-95	Unassigned	?
96-127	dynamic	?			[RFC3551]

RTP Payload Format Media Types

Registration Procedure(s)

Registry closed

Reference

[RFC4855][RFC-ietf-avtcore-rtp-payload-registry-05]

Note

In addition to the RTP payload formats (encodings) listed in the RTP
Payload Types table, there are additional payload formats that do not
have static RTP payload types assigned but instead use dynamic payload
type number assignment. Each payload format is named by a registered
media subtype as listed in the following table. As new payload formats
are specified, their registered media subtypes should be added to this
table. In addition, for the payload formats listed in the RTP Payload
Types table above, the "encoding name" is also registered as a media
subtype under the media type "audio" or "video". The clock rate and
number of channels shown here are the normal values for those payload
formats that have a normal value.  Both type and subtype names are 
case-insensitive as defined in [RFC6838].

This registry has been closed as it was considered redundant, as all 
RTP Payload formats are part of the [Media Types registry]. For further 
motivation, see [RFC-ietf-avtcore-rtp-payload-registry-05].

It was previously stated that registration procedures and a 
registration template can be found in [RFC4855]. This is not actually 
the case, as discussed in [RFC-ietf-avtcore-rtp-payload-registry-05].

Available Formats

CSV

Media Type	Subtype	Clock Rate (Hz)	Channels (audio)	Reference
application	1d-interleaved-parityfec			[RFC6015]
application	flexfec			[RFC8627]
application	h224	4800		[RFC4573]
application	parityfec			[RFC3009]
application	raptorfec			[RFC6682]
application	rtx			[RFC4588]
application	smpte336m			[RFC6597]
application	ulpfec			[RFC5109]
audio	1d-interleaved-parityfec			[RFC6015]
audio	32kadpcm	8000		[RFC3802][RFC2421]
audio	ac3			[RFC4184]
audio	AMR	8000		[RFC4867][RFC3267]
audio	AMR-WB	16000		[RFC4867][RFC3267]
audio	amr-wb+	72000		[RFC4352]
audio	aptx			[RFC7310]
audio	ATRAC-ADVANCED-LOSSLESS			[RFC5584]
audio	atrac-x			[RFC5584]
audio	atrac3	44100		[RFC5584]
audio	BV16	8000		[RFC4298]
audio	BV32	16000		[RFC4298]
audio	clearmode	8000	1	[RFC4040]
audio	CN			[RFC3389]
audio	DAT12			[RFC3190]
audio	dsr-es201108			[RFC3557]
audio	dsr-es202050	8000		[RFC4060]
audio	dsr-es202211	8000		[RFC4060]
audio	dsr-es202212	8000		[RFC4060]
audio	DV			[RFC6469]
audio	DVI4			[RFC4856]
audio	eac3			[RFC4598]
audio	EVRC	8000	1	[RFC4788]
audio	EVRC0	8000	1	[RFC4788]
audio	EVRC1	8000	1	[RFC4788]
audio	EVRCB	8000	1	[RFC4788]
audio	EVRCB0	8000	1	[RFC4788]
audio	EVRCB1	8000	1	[RFC4788]
audio	EVRCNW	16000		[RFC6884]
audio	EVRCNW0	16000		[RFC6884]
audio	EVRCNW1	16000		[RFC6884]
audio	EVRCWB			[RFC5188]
audio	EVRCWB0			[RFC5188]
audio	EVRCWB1			[RFC5188]
audio	flexfec			[RFC8627]
audio	fwdred			[RFC6354]
audio	G711-0			[RFC7650]
audio	g719	48000		[RFC5404]
audio	G722			[RFC4856]
audio	G7221	16000	1	[RFC5577]
audio	G723			[RFC4856]
audio	G726-16	8000	1	[RFC3551][RFC4856]
audio	G726-24	8000	1	[RFC3551][RFC4856]
audio	G726-32	8000	1	[RFC3551][RFC4856]
audio	G726-40	8000	1	[RFC3551][RFC4856]
audio	G728			[RFC4856]
audio	G729			[RFC4856]
audio	G7291	16000		[RFC4749][RFC5459]
audio	G729D	8000	1	[RFC3551][RFC4856]
audio	G729E	8000	1	[RFC3551][RFC4856]
audio	GSM			[RFC4856]
audio	GSM-EFR	8000	1	[RFC3551][RFC4856]
audio	GSM-HR-08	8000		[RFC5993]
audio	iLBC	8000		[RFC3952]
audio	ip-mr_v2.5	16000		[RFC6262]
audio	L8			[RFC3551][RFC4856]
audio	L16			[RFC4856]
audio	L20			[RFC3190]
audio	L24			[RFC3190]
audio	LPC			[RFC4856]
audio	MELP	8000	1	[RFC8130]
audio	MELP600	8000	1	[RFC8130]
audio	MELP1200	8000	1	[RFC8130]
audio	MELP2400	8000	1	[RFC8130]
audio	MP4A-LATM			[RFC6416]
audio	MPA	90000		[RFC3555]
audio	mpa-robust	90000		[RFC5219]
audio	mpeg4-generic			[RFC3640][RFC5691][RFC6295]
audio	opus	48000		[RFC7587]
audio	parityfec			[RFC5109]
audio	PCMA			[RFC4856]
audio	PCMA-WB	16000		[RFC5391]
audio	PCMU			[RFC4856]
audio	PCMU-WB	16000		[RFC5391]
audio	QCELP			[RFC3555]
audio	raptorfec			[RFC6682]
audio	RED			[RFC2198][RFC3555]
audio	rtp-midi			[RFC6295]
audio	rtx			[RFC4588]
audio	scip	8000	1	[SCIP][Michael_Faller][Daniel_Hanson]
audio	SMV	8000	1	[RFC3558]
audio	SMV0	8000	1	[RFC3558]
audio	speex			[RFC5574]
audio	t140c			[RFC4351]
audio	t38			[RFC4612]
audio	telephone-event			[RFC4733]
audio	tone			[RFC4733]
audio	TSVCIS	8000	1	[RFC8817]
audio	uemclip			[RFC5686]
audio	ulpfec			[RFC5109]
audio	VDVI		1	[RFC3551][RFC4856]
audio	VMR-WB	16000		[RFC4348][RFC4424]
audio	vorbis			[RFC5215]
audio	vorbis-config			[RFC5215]
text	1d-interleaved-parityfec			[RFC6015]
text	flexfec			[RFC8627]
text	fwdred			[RFC6354]
text	parityfec			[RFC3009]
text	raptorfec			[RFC6682]
text	red	1000		[RFC4102]
text	rtx			[RFC4588]
text	t140	1000		[RFC4103]
text	ttml+xml			[RFC8759]
text	ulpfec			[RFC5109]
video	BMPEG	90000		[RFC2343][RFC3555]
video	1d-interleaved-parityfec			[RFC6015]
video	3gpp-tt			[RFC4396]
video	AV1	90000		[AV1-Media-Type]
video	BT656	90000		[RFC2431][RFC3555]
video	celB			[RFC3555]
video	DV	90000		[RFC6469]
video	EVC	90000		[RFC9584]
video	flexfec			[RFC8627]
video	H261			[RFC4587]
video	H263	90000		[RFC4628]
video	H263-1998	90000		[RFC4629]
video	H263-2000	90000		[RFC4629]
video	H264			[RFC6184]
video	H264-RCDO	90000		[RFC6185]
video	H264-SVC			[RFC6190]
video	HEVC	90000		[RFC7798]
video	JPEG			[RFC3555]
video	JPEG2000			[RFC5371]
video	jxsv	90000		[RFC9134]
video	MP1S	90000		[RFC2250][RFC3555]
video	MP2P	90000		[RFC2250][RFC3555]
video	MP2T			[RFC3555]
video	MP4V-ES	90000		[RFC6416]
video	mpeg4-generic			[RFC3640]
video	MPV			[RFC3555]
video	nv			[RFC4856]
video	parityfec			[RFC5109]
video	pointer	90000		[RFC2862]
video	raptorfec			[RFC6682]
video	raw	90000		[RFC4175]
video	rtx			[RFC4588]
video	scip	90000	1	[SCIP][Michael_Faller][Daniel_Hanson]
video	smpte291			[RFC8331]
video	SMPTE292M			[RFC3497]
video	ulpfec			[RFC5109]
video	vc1	90000		[RFC4425]
video	vc2	90000		[RFC8450]
video	VP8	90000		[RFC7741]
video	VP9	90000		[RFC-ietf-payload-vp9-16]
video	VVC	90000		[RFC9328]

RTCP Control Packet Types (PT)

Expert(s)

Magnus Westerlund

Reference

[RFC5761][RFC3550]

Note

The RFC "RTP: A Transport Protocol for Real-Time Applications"
[RFC3550] specifies an initial set of "control packet types" for
RTCP.  This list maintains and extends that list.

Available Formats

CSV

Range	Registration Procedures	Note
1-191	Specification Required or Expert Review
194-199	Specification Required or Expert Review	If 200-223 is fully occupied
200-223	Specification Required or Expert Review	Primary Assignments range
224-254	Specification Required or Expert Review

Value	Abbrev.	Name	Reference
0		Reserved
1-191		Unassigned
192		Reserved (Historic-FIR)	[RFC2032]
193		Reserved (Historic-NACK)	[RFC2032]
194	SMPTETC	SMPTE time-code mapping	[RFC5484]
195	IJ	Extended inter-arrival jitter report	[RFC5450]
196-199		Unassigned
200	SR	sender report	[RFC3550]
201	RR	receiver report	[RFC3550]
202	SDES	source description	[RFC3550]
203	BYE	goodbye	[RFC3550]
204	APP	application-defined	[RFC3550]
205	RTPFB	Generic RTP Feedback	[RFC4585]
206	PSFB	Payload-specific	[RFC4585]
207	XR	extended report	[RFC3611]
208	AVB	AVB RTCP packet	[IEEE 1733-2011 Standard for Layer 3 Transport Protocol for Time-Sensitive Applications in Local Area Networks]
209	RSI	Receiver Summary Information	[RFC5760]
210	TOKEN	Port Mapping	[RFC6284]
211	IDMS	IDMS Settings	[RFC7272]
212	RGRS	Reporting Group Reporting Sources	[RFC8861]
213	SNM	Splicing Notification Message	[RFC8286]
214-254		Unassigned
255		Reserved

RTP SDES Item Types

Registration Procedure(s)

Specification Required or Expert Review

Expert(s)

Magnus Westerlund

Reference

[RFC3550]

Note

The RFC "RTP: A Transport Protocol for Real-Time Applications"
[RFC3550] specifies an initial set of "item types" for the RTCP
SDES control packet.  This list maintains and extends that list.

Available Formats

CSV

Value	Abbrev.	Name	Reference
0	END	end of SDES list	[RFC3550]
1	CNAME	canonical name	[RFC3550]
2	NAME	user name	[RFC3550]
3	EMAIL	user's electronic mail address	[RFC3550]
4	PHONE	user's phone number	[RFC3550]
5	LOC	geographic user location	[RFC3550]
6	TOOL	name of application or tool	[RFC3550]
7	NOTE	notice about the source	[RFC3550]
8	PRIV	private extensions	[RFC3550]
9	H323-CADDR	H.323 callable address	[Vineet_Kumar]
10	APSI	Application Specific Identifier	[RFC6776]
11	RGRP	Reporting Group Identifier	[RFC8861]
12	RtpStreamId	RTP Stream Identifier	[RFC8852]
13	RepairedRtpStreamId	Repaired RTP Stream Identifier	[RFC8852]
14	CCID	CLUE CaptId	[RFC8849]
15	MID	Media Identification	[RFC9143]
16-255		Unassigned

SMT Values for TOKEN Packet Type Registry

Registration Procedure(s)

IETF Review

Reference

[RFC6284]

Available Formats

CSV

Value	Name	Reference
0	Reserved	[RFC6284]
1	Port Mapping Request	[RFC6284]
2	Port Mapping Response	[RFC6284]
3	Token Verification Request	[RFC6284]
4	Token Verification Failure	[RFC6284]
5-30	Unassigned
31	Reserved	[RFC6284]

RTP Profile Names

Registration Procedure(s)

Standards Action or Expert Review

Expert(s)

Unassigned

Reference

[RFC3550]

Available Formats

CSV

Profile Name	Reference
RTP/AVP	[RFC3551]
RTP/SAVP	[RFC3711]
RTP/AVPF	[RFC4585]
RTP/SAVPF	[RFC5124]

FMT Values for RTPFB Payload Types

Registration Procedure(s)

Specification Required

Expert(s)

Magnus Westerlund, Roni Even

Reference

[RFC4585]

Available Formats

CSV

Value	Name	Long Name	Reference
1	Generic NACK	Generic negative acknowledgement	[RFC4585]
2		Reserved	[RFC5104]
3	TMMBR	Temporary Maximum Media Stream Bit Rate Request	[RFC5104]
4	TMMBN	Temporary Maximum Media Stream Bit Rate Notification	[RFC5104]
5	RTCP-SR-REQ	RTCP Rapid Resynchronisation Request	[RFC6051]
6	RAMS	Rapid Acquisition of Multicast Sessions	[RFC6285]
7	TLLEI	Transport-Layer Third-Party Loss Early Indication	[RFC6642]
8	RTCP-ECN-FB	RTCP ECN Feedback	[RFC6679]
9	PAUSE-RESUME	Media Pause/Resume	[RFC7728]
10	DBI	Delay Budget Information (DBI)	[3GPP TS 26.114 v16.3.0][Ozgur_Oyman]
11	CCFB	RTP Congestion Control Feedback	[RFC8888]
12-30		Unassigned
31	Extension	Reserved for future extensions	[RFC4585]

FMT Values for PSFB Payload Types

Registration Procedure(s)

Specification Required

Expert(s)

Magnus Westerlund, Roni Even

Reference

[RFC4585]

Available Formats

CSV

Value	Name	Long Name	Reference
1	PLI	Picture Loss Indication	[RFC4585]
2	SLI	Slice Loss Indication	[RFC4585]
3	RPSI	Reference Picture Selection Indication	[RFC4585]
4	FIR	Full Intra Request Command	[RFC5104]
5	TSTR	Temporal-Spatial Trade-off Request	[RFC5104]
6	TSTN	Temporal-Spatial Trade-off Notification	[RFC5104]
7	VBCM	Video Back Channel Message	[RFC5104]
8	PSLEI	Payload-Specific Third-Party Loss Early Indication	[RFC6642]
9	ROI	Video region-of-interest (ROI)	[3GPP TS 26.114 v16.3.0][Ozgur_Oyman]
10	LRR	Layer Refresh Request Command	[RFC-ietf-avtext-lrr-07]
11	VP	Viewport (VP)	[3GPP TS 26.114]
12-14		Unassigned
15	AFB	Application Layer Feedback	[RFC4585]
16-30		Unassigned
31	Extension	Reserved for future extensions	[RFC4585]

RTP Compact Header Extensions

Registration Procedure(s)

Expert Review

Expert(s)

Magnus Westerlund

Reference

[RFC8285]

Note

For extensions defined in RFCs, the URI is recommended to be of the
form urn:ietf:params:rtp-hdrext:, and the formal reference is the RFC
number of the RFC documenting the extension.

Available Formats

CSV

Extension URI	Description	Contact	Reference
urn:ietf:params:rtp-hdrext:toffset	Transmission Time offsets	[Singer]	[RFC5450]
urn:ietf:params:rtp-hdrext:smpte-tc	SMPTE time-code mapping	[Singer]	[RFC5484]
urn:ietf:params:rtp-hdrext:ntp-64	Synchronisation metadata: 64-bit timestamp format	[Thomas_Schierl]	[IETF Audio/Video Transport Working Group][RFC6051]
urn:ietf:params:rtp-hdrext:ntp-56	Synchronisation metadata: 56-bit timestamp format	[Thomas_Schierl]	[IETF Audio/Video Transport Working Group][RFC6051]
urn:ietf:params:rtp-hdrext:ssrc-audio-level	Audio Level	[Jonathan_Lennox]	[RFC6464]
urn:ietf:params:rtp-hdrext:csrc-audio-level	Mixer-to-client audio level indicators	[Emil_Ivov]	[RFC6465]
urn:ietf:params:rtp-hdrext:encrypt	Encrypted extension header element	[Jonathan_Lennox]	[RFC6904]
urn:3gpp:video-orientation	Coordination of video orientation (CVO) feature, see clause 6.2.3	[Specifications_Manager_3GPP]	[3GPP TS 26.114, version 12.5.0]
urn:3gpp:video-orientation:6	Higher granularity (6-bit) coordination of video orientation (CVO) feature, see clause 6.2.3	[Specifications_Manager_3GPP]	[3GPP TS 26.114, version 12.5.0]
urn:3gpp:roi-sent	Signalling of the arbitrary region-of-interest (ROI) information for the sent video, see clause 6.2.3.4	[Specifications_Manager_3GPP]	[3GPP TS 26.114, version 13.1.0]
urn:3gpp:predefined-roi-sent	Signalling of the predefined region-of-interest (ROI) information for the sent video, see clause 6.2.3.4	[Specifications_Manager_3GPP]	[3GPP TS 26.114, version 13.1.0]
urn:ietf:params:rtp-hdrext:sdes	Reserved as base URN for RTCP SDES items that are also defined as RTP compact header extensions.	Authors of [RFC7941]	[RFC7941]
urn:ietf:params:rtp-hdrext:splicing-interval	Splicing Interval	[Jinwei_Xia]	[RFC8286]
urn:ietf:params:rtp-hdrext:framemarkinginfo	Frame marking information for video streams	[Mo_Zanaty]	[RFC-ietf-avtext-framemarking-16]

RTP SDES Compact Header Extensions

Registration Procedure(s)

Expert Review

Expert(s)

Magnus Westerlund

Reference

[RFC7941]

Available Formats

CSV

Extension URI	Description	Contact	Reference
urn:ietf:params:rtp-hdrext:sdes:cname	Source Description: Canonical End-Point Identifier (SDES CNAME)	Authors of [RFC7941]	[RFC7941]
urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id	RTP Stream Identifier	[Adam_Roach]	[RFC8852]
urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id	RTP Repaired Stream Identifier	[Adam_Roach]	[RFC8852]
urn:ietf:params:rtp-hdrext:sdes:CaptId	CLUE CaptId	[Roni_Even]	[RFC8849]
urn:ietf:params:rtp-hdrext:sdes:mid	Media identification	[IESG]	[RFC9143]

Sub-Report Block Type (SRBT) Values for the RSI Packet

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC5760]

Available Formats

CSV

Value	Name	Long Name	Reference
0	IPv4 Address	IPv4 Feedback Target Address	[RFC5760]
1	IPv6 Address	IPv6 Feedback Target Address	[RFC5760]
2	DNS Name	DNS Name indicating Feedback Target Address	[RFC5760]
3	Reserved	Reserved for Assignment by Standards Action	[RFC5760]
4	Loss	Loss distribution	[RFC5760]
5	Jitter	Jitter distribution	[RFC5760]
6	RTT	Round-trip time distribution	[RFC5760]
7	Cumulative loss	Cumulative loss distribution	[RFC5760]
8	Collisions	SSRC Collision list	[RFC5760]
9	Reserved	Reserved for Assignment by Standards Action	[RFC5760]
10	Stats	General statistics	[RFC5760]
11	RTCP BW	RTCP Bandwidth indication	[RFC5760]
12	Group Info	RTCP Group and Average Packet size	[RFC5760]

SFMT Values for RAMS Messages

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC6285]

Available Formats

CSV

Value	Name	Reference
0	Reserved	[RFC6285]
1	RAMS Request	[RFC6285]
2	RAMS Information	[RFC6285]
3	RAMS Termination	[RFC6285]
4-254	Unassigned
255	Reserved	[RFC6285]

RAMS TLV Space Registry

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC6285]

Available Formats

CSV

Type	Description	Reference
0	Reserved	[RFC6285]
1	Requested Media Sender SSRC(s)	[RFC6285]
2	Min RAMS Buffer Fill Requirement	[RFC6285]
3	Max RAMS Buffer Fill Requirement	[RFC6285]
4	Max Receive Bitrate	[RFC6285]
5	Request for Preamble Only	[RFC6285]
6	Supported Enterprise Number(s)	[RFC6285]
7-30	Unassigned
31	Media Sender SSRC	[RFC6285]
32	RTP Seqnum of the First Packet	[RFC6285]
33	Earliest Multicast Join Time	[RFC6285]
34	Burst Duration	[RFC6285]
35	Max Transmit Bitrate	[RFC6285]
36-60	Unassigned
61	Extended RTP Seqnum of First Multicast Packet	[RFC6285]
62-127	Unassigned
128-254	Reserved for Private Use	[RFC6285]
255	Reserved	[RFC6285]

RAMS Response Code Space Registry

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC6285]

Note

New response codes should be classified following the guidelines below:

Available Formats

CSV

Range	Registration Procedures
1xx	Informational
2xx	Success
3xx	Redirection
4xx	RTP Receiver (RTP_Rx) Error
5xx	Burst/Retransmission Source (BRS) Error

Code	Description	Reference
0	A private response code is included in the message	[RFC6285]
100	Parameter update for RAMS session	[RFC6285]
200	RAMS request has been accepted	[RFC6285]
201	Unicast burst has been completed	[RFC6285]
400	Invalid RAMS-R message syntax	[RFC6285]
401	Invalid min buffer requirement in RAMS-R message	[RFC6285]
402	Invalid max buffer requirement in RAMS-R message	[RFC6285]
403	Insufficient max bitrate requirement in RAMS-R message	[RFC6285]
404	Invalid RAMS-T message syntax	[RFC6285]
405	Invalid Token	[RFC6284]
500	An unspecified BRS internal error has occurred	[RFC6285]
501	BRS has insufficient bandwidth to start RAMS session	[RFC6285]
502	Burst is terminated due to network congestion	[RFC6285]
503	BRS has insufficient CPU cycles to start RAMS session	[RFC6285]
504	RAMS functionality is not available on BRS	[RFC6285]
505	RAMS functionality is not available for RTP_Rx	[RFC6285]
506	RAMS functionality is not available for the requested multicast stream	[RFC6285]
507	BRS has no valid starting point available for the requested multicast stream	[RFC6285]
508	BRS has no reference information available for the requested multicast stream	[RFC6285]
509	BRS has no RTP stream matching the requested SSRC	[RFC6285]
510	RAMS request to acquire the entire session has been denied	[RFC6285]
511	Only the preamble information is sent	[RFC6285]
512	RAMS request has been denied due to a policy	[RFC6285]

EKT Message Types

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC8870]

Available Formats

CSV

Value	Message Type	Reference
0	Short	[RFC8870]
1	Unassigned
2	Full	[RFC8870]
3-254	Unassigned
255	Reserved	[RFC8870]

EKT Ciphers

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC8870]

Available Formats

CSV

Value	Name	Reference
0	AESKW128	[RFC8870]
1	AESKW256	[RFC8870]
2-254	Unassigned
255	Reserved	[RFC8870]

Contact Information

ID	Name	Contact URI	Last Updated
[Adam_Roach]	Adam Roach	mailto:adam&nostrum.com	2016-10-20
[Chunrong_Zhu]	Chunrong Zhu	mailto:Chunrong_Zhu&ccm.jf.intel.com	1996-06
[Daniel_Hanson]	Daniel Hanson	mailto:dan.hanson&gd-ms.com	2021-03-15
[Emil_Ivov]	Emil Ivov	mailto:emcho&jitsi.org	2011-12
[IESG]	IESG	mailto:iesg&ietf.org
[Jinwei_Xia]	Jinwei Xia	mailto:xiajinwei&huawei.com	2016-08-09
[Jonathan_Lennox]	Jonathan Lennox	mailto:jonathan&vidyo.com	2013-02-12
[Joseph_Di_Pol]	Joseph Di Pol	mailto:Joe.Dipol&eng.sun.com	1996-05
[Michael_Faller]	Michael Faller	mailto:michael.faller&gd-ms.com	2021-03-15
[Mo_Zanaty]	Mo Zanaty	mailto:mzanaty&cisco.com	2024-03-18
[Ozgur_Oyman]	Ozgur Oyman	mailto:ozgur.oyman&intel.com	2019-11-06
[Roni_Even]	Roni Even	mailto:ron.even.tlv&gmail.com	2017-03-03
[SCIP]	SCIP Working Group	mailto:ncia.cis3&ncia.nato.int	2021-03-15
[Singer]	Unkown	mailto:singer&apple.com
[Specifications_Manager_3GPP]	3GPP Specifications Manager	mailto:3gppContact&etsi.org	2015-09-16
[Thomas_Schierl]	Thomas Schierl	mailto:ts&thomas-schierl.de
[Vineet_Kumar]	Vineet Kumar	mailto:Vineet_Kumar&ccm.jf.intel.com	1997-01