MICROTRONIX Access 1000 - Synchronous Settings

Microtronix Access User Guide
6.1.2 Synchronous Settings
Parameters must be set to match those of the attached device.
Local interface name: The local physical interface to which the synchronous server application will
attach.
- WAN 0 (hdlc0)
- WAN 1 (hdlc1)
Note: when using WAN port 0 (hdlc0), then WAN 0 MUST be disabled in the X.25 WAN, and
Terminal Server pages. Similarly for WAN 1.
Enabled: Select this box to enable the synchronous server application for the selected interface.
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.
UI framing: Enables HDLC Unnumbered Information (UI) frame header recognition and generation.
Options are:
No Feature disabled (data passed to/from frames as-is)
DCE UI headers are checked/stripped, and generated using address 01
DTE UI headers are checked/stripped, and generated using address 01
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