
Microtronix Access User Guide
CD
ON when the interface is enabled.
CTS
ON when the interface is enabled.
DTR
ON indicates the connected device is ready.
RTS
ON indicates the connected device is ready.
5.4.2 LAPB Status
The LAPB status table provides status information for the LAPB frame layer. The following table
provides a description of each column.
LAPB Status
Parameter
Description
Device
Devices that are currently being used for LAPB / X.25
Mode
The current mode of the X.25 device:
DTE
- Data Terminating Equipment (terminal emulation)
DCE
– Data Connecting Equipment (network emulation)
State
The current state of the LAPB device.
DM
– Disconnected Mode
LinkSetup
– establishing data link (SABM sent)
Data transfer
FRMR
– frame recovery
T1
Remaining time in seconds before retransmission of an unacknowledged frame
N2
Current retransmit attempts - number of attempts already made to complete the
successful transmission of a frame
vs
Send State Variable v(s) – next send frame sequence number
vr
Receive State Variable v(r) – next expected frame sequence number
va
Last acknowledged frame sequence number v(a)
T2
Remaining time in seconds before transmission of an outstanding acknowledgement
WIN
The current frame window size for the interface.
5.4.3 X.25 Status
The X.25 Status table provides information and state of the X.25 interfaces. The following table
provides the description of each column.
X.25 Status
Parameter
Description
Device
Devices that are currently being used for X.25.
Mode
The current emulation mode of the X.25 packet layer:
DTE
- Data Terminating Equipment (terminal emulation)
DCE
-Data Connecting Equipment (network emulation)
RAW
- Transparent LAPB interface – reference is LCI 1
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