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Display Filter Reference: ISO 8073/X.224 COTP Connection-Oriented Transport Protocol

Protocol field name: cotp

Versions: 1.0.0 to 4.2.4

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Field name Description Type Versions
cotp.ack_timeAck time (ms)Unsigned integer (16 bits)2.0.0 to 4.2.4
cotp.atn_extended_checksumATN extended checksumUnsigned integer (16 bits)2.0.0 to 4.2.4
cotp.atn_extended_checksum.statusATN extended checksum StatusUnsigned integer (8 bits)2.4.0 to 4.2.4
cotp.avg_throughput.min_accept_called_callingAverage throughput, minimum acceptable, called-calling (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.avg_throughput.min_accept_calling_calledAverage throughput, minimum acceptable, calling-called (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.avg_throughput.targ_called_callingAverage throughput, target value, called-calling (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.avg_throughput.targ_calling_calledAverage throughput, target value, calling-called (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.bad_checksumBad checksumLabel2.4.0 to 4.2.4
cotp.causeCauseUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.checksumChecksumUnsigned integer (16 bits)2.0.0 to 4.2.4
cotp.checksum.statusChecksum StatusUnsigned integer (8 bits)2.4.0 to 4.2.4
cotp.classClassUnsigned integer (8 bits)1.2.0 to 4.2.4
cotp.connectionConnection %s: 0x%x -> 0x%xLabel1.12.0 to 4.2.4
cotp.creditCreditUnsigned integer (16 bits)2.0.0 to 4.2.4
cotp.destrefDestination referenceUnsigned integer (16 bits)1.0.0 to 4.2.4
cotp.disconnect_confirmDisconnect Confirm(DC): 0x%x -> 0x%xLabel1.12.0 to 4.2.4
cotp.disconnect_requestDisconnect Request(DR): 0x%x -> 0x%xLabel1.12.0 to 4.2.4
cotp.dst-tsapDestination TSAPCharacter string1.0.0 to 4.2.4
cotp.dst-tsap-bytesDestination TSAPByte sequence1.0.0 to 4.2.4
cotp.eotLast data unitBoolean1.0.0 to 4.2.4
cotp.inactivity_timerInactivity timer (ms)Unsigned integer (32 bits)2.0.0 to 4.2.4
cotp.liLengthUnsigned integer (8 bits)1.0.0 to 4.2.4
cotp.lower_window_edgeLower window edgeUnsigned integer (32 bits)2.0.0 to 4.2.4
cotp.max_throughput.min_accept_called_callingMaximum throughput, minimum acceptable, called-calling (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.max_throughput.min_accept_calling_calledMaximum throughput, minimum acceptable, calling-called (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.max_throughput.targ_called_callingMaximum throughput, target value, called-calling (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.max_throughput.targ_calling_calledMaximum throughput, target value, calling-called (o/s)Unsigned integer (24 bits)2.0.0 to 4.2.4
cotp.multiple_tpdusMultiple TPDUs in one packetLabel1.12.0 to 4.2.4
cotp.network_expedited_dataUse of network expedited dataBoolean2.0.0 to 4.2.4
cotp.next-tpdu-numberYour TPDU numberUnsigned integer (8 bits)1.0.0 to 4.2.4
cotp.opts.extended_formatsExtended formatsBoolean1.2.0 to 4.2.4
cotp.opts.no_explicit_flow_controlNo explicit flow controlBoolean1.2.0 to 4.2.4
cotp.parameter_codeParameter codeUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.parameter_lengthParameter lengthUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.parameter_valueParameter valueByte sequence2.0.0 to 4.2.4
cotp.preferred_maximum_tpdu_sizePreferred maximum TPDU sizeUnsigned integer (32 bits)2.0.0 to 4.2.4
cotp.preferred_maximum_tpdu_size.invalidPreferred maximum TPDU size: bogus lengthLabel2.0.0 to 4.2.4
cotp.reassembled.lengthReassembled COTP lengthUnsigned integer (32 bits)1.4.0 to 4.2.4
cotp.reassembled_inReassembled COTP in frameFrame number1.0.0 to 4.2.4
cotp.reassignment_timeReassignment time (secs)Unsigned integer (16 bits)2.0.0 to 4.2.4
cotp.rejectReject(RJ): -> 0x%xLabel1.12.0 to 4.2.4
cotp.reject_causeReject causeUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.res_error_rate.min_acceptResidual error rate, minimum acceptableUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.res_error_rate.target_valueResidual error rate, target valueUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.res_error_rate.tdsuResidual error rate, TSDU size of interestUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.segmentCOTP SegmentFrame number1.0.0 to 4.2.4
cotp.segment.countSegment countUnsigned integer (32 bits)1.6.0 to 4.2.4
cotp.segment.errorReassembly errorFrame number1.0.0 to 4.2.4
cotp.segment.multipletailsMultiple tail segments foundBoolean1.0.0 to 4.2.4
cotp.segment.overlapSegment overlapBoolean1.0.0 to 4.2.4
cotp.segment.overlap.conflictConflicting data in segment overlapBoolean1.0.0 to 4.2.4
cotp.segment.toolongsegmentSegment too longBoolean1.0.0 to 4.2.4
cotp.segment_dataCOTP segment dataByte sequence2.0.0 to 4.2.4
cotp.segmentsCOTP SegmentsLabel1.0.0 to 4.2.4
cotp.sequence_numberSequence numberUnsigned integer (16 bits)2.0.0 to 4.2.4
cotp.src-tsapSource TSAPCharacter string1.0.0 to 4.2.4
cotp.src-tsap-bytesSource TSAPByte sequence1.0.0 to 4.2.4
cotp.srcrefSource referenceUnsigned integer (16 bits)1.0.0 to 4.2.4
cotp.tpdu-numberTPDU numberUnsigned integer (8 bits)1.0.0 to 4.2.4
cotp.tpdu_sizeTPDU sizeUnsigned integer (8 bits)2.0.0 to 4.2.4
cotp.transit_delay.max_accept_called_callingTransit delay, maximum acceptable, called-calling (ms)Unsigned integer (16 bits)2.0.0 to 4.2.4
cotp.transit_delay.max_accept_calling_calledTransit delay, maximum acceptable, calling-called (ms)Unsigned integer (16 bits)2.0.0 to 4.2.4
cotp.transit_delay.targ_called_callingTransit delay, target value, called-calling (ms)Unsigned integer (16 bits)2.0.0 to 4.2.4
cotp.transit_delay.targ_calling_calledTransit delay, target value, calling-called (ms)Unsigned integer (16 bits)2.0.0 to 4.2.4
cotp.transport_expedited_data_transferTransport expedited data transferBoolean2.0.0 to 4.2.4
cotp.typePDU TypeUnsigned integer (8 bits)1.0.0 to 4.2.4
cotp.use_16_bit_checksum16 bit checksumBoolean2.0.0 to 4.2.4
cotp.vp_opt_sel_class1_useUseBoolean2.0.0 to 4.2.4
cotp.vp_priorityPriorityUnsigned integer (16 bits)2.0.0 to 4.2.4
cotp.vp_version_nrVersionUnsigned integer (8 bits)2.0.0 to 4.2.4

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