Wireshark
the world's foremost network protocol analyzer
Display Filter Reference: Real-time Transport Control Protocol
Protocol field name: rtcp
Versions: 1.0.0 to 1.6.5
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| Field name | Type | Description | Versions |
|---|---|---|---|
| rtcp.app.data | Sequence of bytes | Application specific data | 1.0.0 to 1.6.5 |
| rtcp.app.mux | Label | RtpMux Application specific data | 1.2.14 to 1.6.5 |
| rtcp.app.mux.cp | Boolean | Header compression supported | 1.2.14 to 1.6.5 |
| rtcp.app.mux.mux | Boolean | Multiplexing supported | 1.2.14 to 1.6.5 |
| rtcp.app.mux.muxport | Unsigned integer, 2 bytes | Local Mux Port | 1.2.14 to 1.6.5 |
| rtcp.app.mux.selection | Unsigned integer, 1 byte | Multiplexing selection | 1.2.14 to 1.6.5 |
| rtcp.app.name | Character string | Name (ASCII) | 1.0.0 to 1.6.5 |
| rtcp.app.poc1 | Label | PoC1 Application specific data | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.ack.reason.code | Unsigned integer, 2 bytes | Reason code | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.ack.subtype | Unsigned integer, 1 byte | Subtype | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.add.ind.mao | Boolean | Manual answer override | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.content.a.dn | Boolean | Nick name of inviting client | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.content.a.id | Boolean | Identity of inviting client | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.content.grp.dn | Boolean | Group name | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.content.grp.id | Boolean | Group identity | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.content.sess.id | Boolean | Session identity | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.sdes.a.dn | Character string | Nick name of inviting client | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.sdes.a.id | Character string | Identity of inviting client | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.sdes.grp.dn | Character string | Group Name | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.sdes.grp.id | Character string | Group identity | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.sdes.sess.id | Character string | Session identity | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.conn.session.type | Unsigned integer, 1 byte | Session type | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.disp.name | Character string | Display Name | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.ignore.seq.no | Unsigned integer, 2 bytes | Ignore sequence number field | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.last.pkt.seq.no | Unsigned integer, 2 bytes | Sequence number of last RTP packet | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.new.time.request | Unsigned integer, 2 bytes | New time client can request (seconds) | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.participants | Unsigned integer, 2 bytes | Number of participants | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.priority | Unsigned integer, 1 byte | Priority | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.qsresp.position | Unsigned integer, 2 bytes | Position (number of clients ahead) | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.qsresp.priority | Unsigned integer, 1 byte | Priority | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.reason.code | Unsigned integer, 1 byte | Reason code | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.reason.phrase | Character string | Reason Phrase | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.request.ts | Date and time | Talk Burst Request Timestamp | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.sip.uri | Character string | SIP URI | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.ssrc.granted | Unsigned integer, 4 bytes | SSRC of client granted permission to talk | 1.0.0 to 1.6.5 |
| rtcp.app.poc1.stt | Unsigned integer, 2 bytes | Stop talking timer | 1.0.0 to 1.6.5 |
| rtcp.app.PoC1.subtype | Unsigned integer, 1 byte | Subtype | 1.0.0 to 1.6.5 |
| rtcp.app.subtype | Unsigned integer, 1 byte | Subtype | 1.0.0 to 1.6.5 |
| rtcp.bye_reason_not_padded | Label | BYE reason string not NULL padded | 1.0.3 to 1.6.5 |
| rtcp.bye_reason_not_terminated | Label | BYE reason string not NULL terminated | 1.0.0 to 1.0.2 |
| rtcp.fci | Sequence of bytes | Feedback Control Information (FCI) | 1.0.0 to 1.6.5 |
| rtcp.length | Unsigned integer, 2 bytes | Length | 1.0.0 to 1.6.5 |
| rtcp.length_check | Boolean | RTCP frame length check | 1.0.0 to 1.6.5 |
| rtcp.lsr-frame | Frame number | Frame matching Last SR timestamp | 1.0.0 to 1.6.5 |
| rtcp.lsr-frame-captured | Unsigned integer, 4 bytes | Time since Last SR captured | 1.0.0 to 1.6.5 |
| rtcp.mediassrc | Unsigned integer, 4 bytes | Media source SSRC | 1.4.0 to 1.6.5 |
| rtcp.nack.blp | Unsigned integer, 2 bytes | Bitmask of following lost packets | 1.0.0 to 1.6.5 |
| rtcp.nack.fsn | Unsigned integer, 2 bytes | First sequence number | 1.0.0 to 1.6.5 |
| rtcp.padding | Boolean | Padding | 1.0.0 to 1.6.5 |
| rtcp.padding.count | Unsigned integer, 1 byte | Padding count | 1.0.0 to 1.6.5 |
| rtcp.padding.data | Sequence of bytes | Padding data | 1.0.0 to 1.6.5 |
| rtcp.profile-specific-extension | Sequence of bytes | Profile-specific extension | 1.0.0 to 1.6.5 |
| rtcp.psfb.fir.fci.csn | Unsigned integer, 1 byte | Command Sequence Number | 1.4.0 to 1.6.5 |
| rtcp.psfb.fir.fci.reserved | Unsigned integer, 4 bytes | Reserved | 1.4.0 to 1.6.5 |
| rtcp.psfb.fir.fci.ssrc | Unsigned integer, 4 bytes | SSRC | 1.4.0 to 1.6.5 |
| rtcp.psfb.fmt | Unsigned integer, 1 byte | RTCP Feedback message type (FMT) | 1.0.0 to 1.6.5 |
| rtcp.pt | Unsigned integer, 1 byte | Packet type | 1.0.0 to 1.6.5 |
| rtcp.rc | Unsigned integer, 1 byte | Reception report count | 1.0.0 to 1.6.5 |
| rtcp.roundtrip-delay | Signed integer, 4 bytes | Roundtrip Delay(ms) | 1.0.0 to 1.6.5 |
| rtcp.rtpfb.fmt | Unsigned integer, 1 byte | RTCP Feedback message type (FMT) | 1.0.0 to 1.6.5 |
| rtcp.rtpfb.nack | Unsigned integer, 2 bytes | RTCP Transport Feedback NACK | 1.0.0 to 1.6.5 |
| rtcp.rtpfb.nack.blp | Unsigned integer, 2 bytes | RTCP Transport Feedback NACK BLP | 1.0.0 to 1.6.5 |
| rtcp.rtpfb.tmmbr.fci.bitrate | Character string | Maximum total media bit rate | 1.4.0 to 1.6.5 |
| rtcp.rtpfb.tmmbr.fci.exp | Unsigned integer, 1 byte | MxTBR Exp | 1.4.0 to 1.6.5 |
| rtcp.rtpfb.tmmbr.fci.mantissa | Unsigned integer, 4 bytes | MxTBR Mantissa | 1.4.0 to 1.6.5 |
| rtcp.rtpfb.tmmbr.fci.measuredoverhead | Unsigned integer, 2 bytes | Measured Overhead | 1.4.0 to 1.6.5 |
| rtcp.rtpfb.tmmbr.fci.ssrc | Unsigned integer, 4 bytes | SSRC | 1.4.0 to 1.6.5 |
| rtcp.sc | Unsigned integer, 1 byte | Source count | 1.0.0 to 1.6.5 |
| rtcp.sdes.length | Unsigned integer, 4 bytes | Length | 1.0.0 to 1.6.5 |
| rtcp.sdes.prefix.length | Unsigned integer, 1 byte | Prefix length | 1.0.0 to 1.6.5 |
| rtcp.sdes.prefix.string | Character string | Prefix string | 1.0.0 to 1.6.5 |
| rtcp.sdes.ssrc_csrc | Unsigned integer, 4 bytes | SSRC / CSRC identifier | 1.0.0 to 1.6.5 |
| rtcp.sdes.text | Character string | Text | 1.0.0 to 1.6.5 |
| rtcp.sdes.type | Unsigned integer, 1 byte | Type | 1.0.0 to 1.6.5 |
| rtcp.sender.octetcount | Unsigned integer, 4 bytes | Sender's octet count | 1.0.0 to 1.6.5 |
| rtcp.sender.packetcount | Unsigned integer, 4 bytes | Sender's packet count | 1.0.0 to 1.6.5 |
| rtcp.senderssrc | Unsigned integer, 4 bytes | Sender SSRC | 1.0.0 to 1.6.5 |
| rtcp.setup | Character string | Stream setup | 1.0.0 to 1.6.5 |
| rtcp.setup-frame | Frame number | Setup frame | 1.0.0 to 1.6.5 |
| rtcp.setup-method | Character string | Setup Method | 1.0.0 to 1.6.5 |
| rtcp.ssrc.cum_nr | Signed integer, 3 bytes | Cumulative number of packets lost | 1.0.0 to 1.6.5 |
| rtcp.ssrc.discarded | Unsigned integer, 1 byte | Fraction discarded | 1.0.0 to 1.6.5 |
| rtcp.ssrc.dlsr | Unsigned integer, 4 bytes | Delay since last SR timestamp | 1.0.0 to 1.6.5 |
| rtcp.ssrc.ext_high | Unsigned integer, 4 bytes | Extended highest sequence number received | 1.0.0 to 1.6.5 |
| rtcp.ssrc.fraction | Unsigned integer, 1 byte | Fraction lost | 1.0.0 to 1.6.5 |
| rtcp.ssrc.high_cycles | Unsigned integer, 2 bytes | Sequence number cycles count | 1.0.0 to 1.6.5 |
| rtcp.ssrc.high_seq | Unsigned integer, 2 bytes | Highest sequence number received | 1.0.0 to 1.6.5 |
| rtcp.ssrc.identifier | Unsigned integer, 4 bytes | Identifier | 1.0.0 to 1.6.5 |
| rtcp.ssrc.jitter | Unsigned integer, 4 bytes | Interarrival jitter | 1.0.0 to 1.6.5 |
| rtcp.ssrc.lsr | Unsigned integer, 4 bytes | Last SR timestamp | 1.0.0 to 1.6.5 |
| rtcp.timestamp.ntp | Date and time | MSW and LSW as NTP timestamp | 1.0.0 to 1.6.5 |
| rtcp.timestamp.ntp.lsw | Unsigned integer, 4 bytes | Timestamp, LSW | 1.0.0 to 1.6.5 |
| rtcp.timestamp.ntp.msw | Unsigned integer, 4 bytes | Timestamp, MSW | 1.0.0 to 1.6.5 |
| rtcp.timestamp.rtp | Unsigned integer, 4 bytes | RTP timestamp | 1.0.0 to 1.6.5 |
| rtcp.version | Unsigned integer, 1 byte | Version | 1.0.0 to 1.6.5 |
| rtcp.xr.beginseq | Unsigned integer, 2 bytes | Begin Sequence Number | 1.0.0 to 1.6.5 |
| rtcp.xr.bl | Unsigned integer, 2 bytes | Length | 1.0.0 to 1.6.5 |
| rtcp.xr.bs | Unsigned integer, 1 byte | Type Specific | 1.0.0 to 1.6.5 |
| rtcp.xr.bt | Unsigned integer, 1 byte | Type | 1.0.0 to 1.6.5 |
| rtcp.xr.btxnq.begseq | Unsigned integer, 2 bytes | Starting sequence number | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.cycles | Unsigned integer, 2 bytes | Number of cycles in calculation | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.endseq | Unsigned integer, 2 bytes | Last sequence number | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.es | Unsigned integer, 4 bytes | ES due to unavailable packet events | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.jbevents | Unsigned integer, 2 bytes | Number of jitter buffer adaptations to date | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.ses | Unsigned integer, 4 bytes | SES due to unavailable packet events | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.spare | Character string | Spare/reserved bits | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.tdegjit | Unsigned integer, 4 bytes | Time degraded by jitter buffer adaptation events | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.tdegnet | Unsigned integer, 4 bytes | Time degraded by packet loss or late delivery | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.vmaxdiff | Unsigned integer, 2 bytes | Maximum IPDV difference in 1 cycle | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.vrange | Unsigned integer, 2 bytes | Maximum IPDV difference seen to date | 1.2.0 to 1.6.5 |
| rtcp.xr.btxnq.vsum | Unsigned integer, 4 bytes | Sum of peak IPDV differences to date | 1.2.0 to 1.6.5 |
| rtcp.xr.dlrr | Unsigned integer, 4 bytes | Delay since last RR timestamp | 1.0.0 to 1.6.5 |
| rtcp.xr.endseq | Unsigned integer, 2 bytes | End Sequence Number | 1.0.0 to 1.6.5 |
| rtcp.xr.lrr | Unsigned integer, 4 bytes | Last RR timestamp | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.devjitter | Unsigned integer, 4 bytes | Standard Deviation of Jitter | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.devttl | Unsigned integer, 1 byte | Standard Deviation of TTL | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.dupflag | Boolean | Duplicates Report Flag | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.dups | Unsigned integer, 4 bytes | Duplicate Packets | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.jitterflag | Boolean | Jitter Report Flag | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.lost | Unsigned integer, 4 bytes | Lost Packets | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.lrflag | Boolean | Loss Report Flag | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.maxjitter | Unsigned integer, 4 bytes | Maximum Jitter | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.maxttl | Unsigned integer, 1 byte | Maximum TTL or Hop Limit | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.meanjitter | Unsigned integer, 4 bytes | Mean Jitter | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.meanttl | Unsigned integer, 1 byte | Mean TTL or Hop Limit | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.minjitter | Unsigned integer, 4 bytes | Minimum Jitter | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.minttl | Unsigned integer, 1 byte | Minimum TTL or Hop Limit | 1.0.0 to 1.6.5 |
| rtcp.xr.stats.ttl | Unsigned integer, 1 byte | TTL or Hop Limit Flag | 1.0.0 to 1.6.5 |
| rtcp.xr.tf | Unsigned integer, 1 byte | Thinning factor | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.burstdensity | Unsigned integer, 1 byte | Burst Density | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.burstduration | Unsigned integer, 2 bytes | Burst Duration(ms) | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.esdelay | Unsigned integer, 2 bytes | End System Delay(ms) | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.extrfactor | Unsigned integer, 1 byte | External R Factor | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.gapdensity | Unsigned integer, 1 byte | Gap Density | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.gapduration | Unsigned integer, 2 bytes | Gap Duration(ms) | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.gmin | Unsigned integer, 1 byte | Gmin | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.jba | Unsigned integer, 1 byte | Adaptive Jitter Buffer Algorithm | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.jbabsmax | Unsigned integer, 2 bytes | Absolute Maximum Jitter Buffer Size | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.jbmax | Unsigned integer, 2 bytes | Maximum Jitter Buffer Size | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.jbnominal | Unsigned integer, 2 bytes | Nominal Jitter Buffer Size | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.jbrate | Unsigned integer, 1 byte | Jitter Buffer Rate | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.moscq | Floating point (single-precision) | MOS - Conversational Quality | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.moslq | Floating point (single-precision) | MOS - Listening Quality | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.noiselevel | Signed integer, 1 byte | Noise Level | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.plc | Unsigned integer, 1 byte | Packet Loss Concealment Algorithm | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.rerl | Unsigned integer, 1 byte | Residual Echo Return Loss | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.rfactor | Unsigned integer, 1 byte | R Factor | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.rtdelay | Unsigned integer, 2 bytes | Round Trip Delay(ms) | 1.0.0 to 1.6.5 |
| rtcp.xr.voipmetrics.signallevel | Signed integer, 1 byte | Signal Level | 1.0.0 to 1.6.5 |
| srtcp.auth_tag | Sequence of bytes | SRTCP Auth Tag | 1.0.0 to 1.6.5 |
| srtcp.e | Boolean | SRTCP E flag | 1.0.0 to 1.6.5 |
| srtcp.index | Unsigned integer, 4 bytes | SRTCP Index | 1.0.0 to 1.6.5 |
| srtcp.mki | Sequence of bytes | SRTCP MKI | 1.0.0 to 1.6.5 |