INTNUMInterval number: The nth sample database interval based on the start time specified in the Create Performance Data (CRTPFRDTA) command.PD (5,0)DTETIMInterval date (yymmdd) and time (hhmmss): The date and time of the sample interval.C (12)INTSECElapsed interval seconds: The number of seconds since the last sample interval.PD (7,0)IOPRNIOP resource name.C(10)ISIOPReservedC (1)ISTYPEThe resource type of the IOP or adapter represented by this record.C (4)ISLNDLine description: The name of the line description.C (10)ISNWINetwork interface description: The name of the network interface description.C (10)ISLSPLink speed: The speed of this channel in bits per second.PD (11,0)ISPRCLProtocol type: I for IDLC.C (1)ILCRCEReceive CRC errors: The number of received frames that contain a cycle redundancy check (CRC) error.PD (11,0)ILSFEShort frame errors: The number of short frames received. A short frame is a frame that has fewer octets between its start flag and end flag than is permitted.PD (11,0)ILORUNReceive overrun: The number of times the ISDN subsystem could not keep pace with incoming data because of local controller overload.PD (11,0)ILURUNTransmit underrun: The number of times the ISDN subsystem could not keep pace with outgoing data because of local controller overload.PD (11,0)ILABRTAborts received: The number of frames received that contained HDLC abort indicators.PD (11,0)ILFRIEFrames received in error: The sum of receive CRC errors, short frame errors, receive overrun, transmit underrun, aborts received, and frame sequence errors (ILCRCE, ILSFE, ILORUN, ILURUN, ILABRT, ISSEQE).PD (11,0)ISFRTRetransmitted frames.PD (11,0)ISSEQESequence errors: The number of received frames that contained sequence numbers indicating frames were lost.PD (11,0)ISFTRNTotal number of frames transmitted: This includes information (I), unnumbered information (UI), and supervisory (S) frames sent to a remote link station. This includes frames retransmitted and frames sent on transmissions stopped by transmit underruns, in addition to successful transmissions.PD (11,0)ISFRCVTotal number of frames received: This includes information (I), unnumbered information (UI), and supervisory (S) frames received from the remote link station. This includes no errors.PD (11,0)ISBTRNTotal bytes transmitted: The total number of bytes transmitted to a remote link station. This includes bytes retransmitted and bytes sent on transmissions stopped by a transmit underrun, in addition to successful transmissions.PD (11,0)ISBRCVTotal bytes received: The total number of bytes received from the remote link station. This includes no errors.PD (11,0)ISB1B1 channel: Set to one if the B1 channel was used.PD (1,0)ISB2B2 channel: Set to one if the B2 channel was used.PD (1,0)ISCHANB channel used: The B channel used is associated with a bit in this field being set to 1. Bit 0 (most significant bit) and 31 (least significant bit) are reserved. Bits 1 to 30 are associated with B channels 30 to 1, respectively.C (4)

Field Name	Description	Attribute