Internet Assigned Numbers Authority Real-Time Transport Protocol (RTP) Parameters Last Updated 2024-04-11 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text 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 [IMG] 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) Standards Action or Expert Review Expert(s) Unassigned Reference [RFC4855] 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 RFC4288. Registration procedures and a registration template can be found in [RFC4855]. Available Formats [IMG] CSV Media Type Subtype Clock Rate (Hz) Channels (audio) Reference application 1d-interleaved-parityfec [RFC6015] 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 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 EVRCWB [RFC5188] audio EVRCWB0 [RFC5188] audio EVRCWB1 [RFC5188] audio fwdred [RFC6354] 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 [RFC3016] audio MPA 90000 [RFC3555] audio mpa-robust 90000 [RFC5219] audio mpeg4-generic [RFC3640][RFC5691][RFC6295] 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 fwdred [RFC6354] text parityfec [RFC3009] text raptorfec [RFC6682] text red 1000 [RFC4102] text rtx [RFC4588] text t140 1000 [RFC4103] text ulpfec [RFC5109] video BMPEG 90000 [RFC2343][RFC3555] video 1d-interleaved-parityfec [RFC6015] video 3gpp-tt [RFC4396] video BT656 90000 [RFC2431][RFC3555] video celB [RFC3555] video DV 90000 [RFC6469] 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 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 [RFC3016] 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 SMPTE292M [RFC3497] video ulpfec [RFC5109] video vc1 90000 [RFC4425] video vc2 90000 [RFC8450] video VP9 90000 [RFC-ietf-payload-vp9-16] 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 [IMG] 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 [IMG] 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 [IMG] 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 [IMG] 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 [IMG] 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 [IMG] 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 [IMG] 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 [Thomas_Schierl] [IETF Audio/Video Transport Working timestamp format Group][RFC6051] urn:ietf:params:rtp-hdrext:ntp-56 Synchronisation metadata: 56-bit [Thomas_Schierl] [IETF Audio/Video Transport Working timestamp format 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 [Emil_Ivov] [RFC6465] indicators urn:ietf:params:rtp-hdrext:encrypt Encrypted extension header [Jonathan_Lennox] [RFC6904] element urn:3gpp:video-orientation Coordination of video orientation [Specifications_Manager_3GPP] [3GPP TS 26.114, version 12.5.0] (CVO) feature, see clause 6.2.3 Higher granularity (6-bit) urn:3gpp:video-orientation:6 coordination of video orientation [Specifications_Manager_3GPP] [3GPP TS 26.114, version 12.5.0] (CVO) feature, see clause 6.2.3 Signalling of the arbitrary urn:3gpp:roi-sent region-of-interest (ROI) [Specifications_Manager_3GPP] [3GPP TS 26.114, version 13.1.0] information for the sent video, see clause 6.2.3.4 Signalling of the predefined urn:3gpp:predefined-roi-sent region-of-interest (ROI) [Specifications_Manager_3GPP] [3GPP TS 26.114, version 13.1.0] information for the sent video, see clause 6.2.3.4 Reserved as base URN for RTCP urn:ietf:params:rtp-hdrext:sdes SDES items that are also defined Authors of [RFC7941] [RFC7941] as RTP compact header extensions. urn:ietf:params:rtp-hdrext:splicing-interval Splicing Interval [Jinwei_Xia] [RFC8286] urn:ietf:params:rtp-hdrext:framemarkinginfo Frame marking information for [Mo_Zanaty] [RFC-ietf-avtext-framemarking-16] video streams RTP SDES Compact Header Extensions Registration Procedure(s) Expert Review Expert(s) Magnus Westerlund Reference [RFC7941] Available Formats [IMG] CSV Extension URI Description Contact Reference urn:ietf:params:rtp-hdrext:sdes:cname Source Description: Canonical End-Point Identifier (SDES Authors of [RFC7941] [RFC7941] CNAME) 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 [IMG] 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 [IMG] 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 [IMG] 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 [IMG] 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 [IMG] 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 [IMG] 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 Licensing Terms