| Index | The ifIndex value for the LAPB interface. |
| LowerInterface | This object identifies the ifIndex of the interface immediately below this interface (ie. physical or virtual port). A value of 0 indicates that this LAPB instance is not assigned to an underlying port. |
| TransmitKWinSize | The current PDU window size this interface uses to transmit. This is the maximum number of unacknowledged sequenced PDUs that may be outstanding from this DTE at any one time. |
| ReceiveKWinSize | The current receive PDU window size for this interface. This is the maximum number of unacknowledged sequenced PDUs that may be outstanding from the DCE remote DTE at any one time. |
| RxmitCount | The current N2 retry counter used for this interface. This specifies the number of times a PDU will be resent after the T1 timer expires without an acknowledgement for the PDU. |
| T1AckTimer | The current T1 timer for this interface. This specifies the maximum time in milliseconds to wait for acknowledgment of a PDU. |
| T2AckDelayTimer | The current T2 timer for this interface. This specifies the maximum time in milliseconds to wait before sending an acknowledgment for a sequenced PDU. |
| T3DisconnectTimer | The current T3 timer for this interface. This specifies the time in milliseconds to wait before considering the link disconnected. A value of zero indicates the link will be considered disconnected upon completion of the frame exchange to disconnect the link. |
| T4IdleTimer | The current T4 timer for this interface. This specifies the maximum time in milliseconds to allow without frames being exchanged on the data link. A value of 2147483647 indicates no idle timer is being kept. |
| BusyTimer | Duration to wait before transmitting an RR frame after receiving an RNR from the remote peer. |
| StationType | Identifies the desired station type of this interface. |
| Sequencing | This value identifies the modulus to be used for LAPB sequence numbers. |
