Index |
Unique index of the X21 interface. |
L1State |
The X21 physical layer state
dn(1) physical layer is inactive;
up(2) physical layer is active; Enumerations: |
L1Mode |
The physical layer (layer 1) mode. When configured as
DCE(2) the X21 interface provides the clock. Enumerations: |
IfLeads |
The value of IfLeads has influence on the state of the
physical layer (L1State). When configured as
IfLeads=enabled(1), the state of the physical layer
depends on the signals of the X.21 interface pins
`Indication' and `Control'. When configured as
IfLeads=disabled(2), the state of the physical layer
stays always up. Enumerations: |
Speed |
The X21 interface speed in bits per second. The range
can be configured between 2Mbits and 2400 Bits per
second. Enumerations: - s2048k (1)
- s1024k (2)
- s512k (3)
- s256k (4)
- s128k (5)
- s64000 (6)
- s38400 (7)
- s19200 (8)
- s14400 (9)
- s9600 (10)
- s2400 (11)
|
L2Mode |
The layer 2 mode. This value has influence on the
HDLC address field (first byte of a HDCL frame). When
configured as DTE(1) the address in a command frame is
0x01, when configured as DCE(2) it is 0x03. For
response frames it is vice versa. When configured as
AUTO(3), layer 2 is set to the same mode like L1Mode is
set. Enumerations: |
SpeedReal |
The measured X21 interface speed in bits per second. |
RxPackets |
Count of received valid Frames. |
RxOctets |
Count of received bytes. |
TxPackets |
Count of transmitted valid Frames. |
TxOctets |
Count of transmitted bytes. |
RxResets |
Count of receiver resets. Under rare circumstances it
might be necessary to reset the receiver to work
properly. |
RxAborts |
Count of receiver aborts. The sender of a frame can
indicate a frame as aborted with a special Abort
sequence. |
RxOverruns |
Count of receiver overruns. If the X21 card is unable
to grant sufficiently soon/often the bus, the
32-character RxFIFO may fill up. This leads to loss of
data. |
RxCRCErrors |
Count of corrupted frames. Errors due to interference
on the X21 cable. |
RxGiantFrames |
Count of received frames with illegal framesize. This
can occur if a frame delimiter is destroyed. |
TxResets |
Count of transmitter resets. Under rare circumstances
it might be necessary to reset the transmitter to work
properly. |
TxAborts |
Count of transmitter aborts. While sending a frame it
might be necessary to indicate this frame as aborted. In
this case the receiver regards this frame as illegal. |
TxUnderruns |
Count of transmitter underruns. The serial data for the
X21 card is supplied too slowly. |
TxGiantFrames |
Count of transmitted frames with illegal
framesize. This can occur if an upper module creates
packets with more than the maximum allowed packet size. |
IfReSyncs |
Count of interface resynchronization. Under rare
circumstances it might be necessary to resynchronize
the physical interface to work properly. |
Bundle |
Index of the bundle to aggregate multiple Channels
to one interface. |