Microtronix Access User Guide
hdlc0 -
WAN port 0
hdlc1
- WAN port 1 (not available on Access 1000 model)
Note: when using WAN port 0 (hdlc0), then hdlc0 MUST be disabled in the L1–Device page,
and ttyS0 MUST be disabled in the Terminal Server page. Similarly for hdlc1 and ttyS1.
Interface Type:
The physical interface type to be used. The supported types are: RS232/V.24, V.35,
X.21, RS449/V.36, RS530, and RS530a. Refer to the
Cables and Connectors
section to determine the
appropriate cable for the application.
Clock Source:
Specifies the source of the synchronous clocking (timing) signal.
If connecting to a DCE device (like a modem) that provides the clock signal, an external clock source is
chosen. For independent transmit and receive clocks, choose
External
. For a single clock signal
source, choose
RxFromTx
. When using a tail circuit cable, choose
TxFromRx
.
If the interface is to provide clocking signal to a DTE device, then select an internal source and specify
a Clock Rate appropriate for the interface. Choose
Internal
for independent receive and transmit
clocks, or
DTE
to derive the clock from the DTE’s external transmit clock.
Clock Rate:
Specifies the clock rate used for the internal clock source (Internal, TxFromRx, TxInt). Do
not set the speed higher than the attached device’s capability. RS232 is limited to 128Kb/s with a short,
reliable cable. Otherwise RS232 is limited to 64Kb/s. Other interface types allow speeds up to 10
Mbps.
Parity:
Cyclical Redundancy Checksum (CRC) added to the end of trnasmitted frames for the detection
of bits errors by the receiver. If enabled, it is added to the end of each frame, and checked on received
frames. Options are:
None
No CRC will be generated or checked.
CRC-16
2-byte CRC as per ITU
CRC-32
4-byte CRC as per ITU
Encoding:
The method of bit encoding. Options are:
NRZ
Non-Return-to-Zero
NRZI
Non-Return-to-Zero-Inverted
DTR Detection:
Select this box to have the Access Gateway react to changes on the received DTR
modem control signal. If enabled, TCP connections will only occur when the DTR signal is raised.
Enabled:
Select this box to enable the sync server application for the selected device.
8.1.3 Network Settings
Frame Encapsulation:
Specify the method of passing frames across the TCP socket. Valid values are
RAW: Data is passed transparently as received (byte stream). Received frames may become
split across TCP packets, or merged into single TCP packets, and the frame boundaries are
lost.
MBIT: Received frames are prefixed with a 2 byte header containing the length of the frame
when sent across the TCP/IP interface, so that the boundaries of the frame can be
reconstructed by the remote TCP receiver.
TCP Port:
If the IP Address is set to 0.0.0.0, the sync server will accept connections from a remote
TCP/IP client on this TCP port number. If the IP Address is set to a valid destination, the sync server
will connect to a remote TCP/IP server at the specified TCP port number.
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