Telephone Modem driver for use with DNP3 driver. Use the Device.Telephone to
set the outgoing call telephone number.
| Port |
Names of COM Port. |
| Baud Rate |
Transmission rate in bits per second. |
| Data Bits |
Number of data bits per byte. |
| Parity |
Choose None, Odd, Even, Mark or Space
parity. |
| Stop Bits |
1, 1.5 or 2 stop bits. |
| FIFO Bytes |
If you system have an 16550 UART that
has a 16 byte receive buffer, then the FIFO setting
should match the system Receive Buffer size (for Windows
95, start/settings/control panel/system/Device
Manager/Port/Communication Ports/COMx/Port
Settings/Advanced). A value of 8 seems adequate for most
situations. A lower value will give better response time,
but will use more CPU time. It is for end of receive
frame detection. The system will assume that the end of
frame is reached if does not receive any more data after
that amount of character time. |
| Half Duplex |
For use in situations where the Transmit and Receive
lines are tied together. When enabled, the echoed transmitted
characters are discarded.
|
| Standby |
Not used
|
| Flow Control |
Input and Output flow control
| None |
No flow control |
| XON/XOFF |
Software Xon/Xoff flow control. |
| RTS/CTS |
Raise RTS when input buffer is less than one-half
full. Lower RTS when input buffer is more than three quarters
full. Transmit only when CTS is high. |
| DTR/DSR |
Raise DTR when input buffer is less than one-half
full. Lower DTR when input buffer is more than three quarters
full. Transmit only when DSR is high. |
| DCD collision avoidance |
For use in half duplex, multi-dropped system.
Continuously wait for DCD to be low
for at least the random quiescent time before each transmission. The
quiescent time is a random time between min and max delay. |
| CTS collision avoidance |
For use in half duplex, multi-dropped system.
Continuously wait for
CTS to be low
for at least the random quiescent time before each transmission. The
quiescent time is a random time between min and max delay. |
| CTS |
Transmit only when CTS is high. |
| DSR |
Transmit only when DSR is high. |
|
| Tone Dialling |
Use Tone dialling. |
| Answer after n rings |
Answer incoming call after n rings |
| Init Sequence |
Modem initialisation sequence. Turn on Carrier Detect
Signal when remote carrier signal is present, hang up when DTR is
low and use Word responses. |
| PTT Control |
Press To Talk Control.
| None |
RTS and DTR are on all the time |
| RTS |
Raise RTS only when sending data |
| DTR |
Raise DTR only when sending data |
| RTS and DTR |
Raise RTS and DTR only when sending data |
|
| Pre Transmission Delay (On Delay) |
Used with PTT Control, raise RTS or DTR and wait this time before
transmitting data. |
| Post Transmission Delay (Off Delay) |
Used with PTT Control, after all data are transmitted, wait this time
before dropping RTS or DTR. |
| Min Delay |
Used with DCD or CTS collision avoidance. |
| Max Delay |
Used with DCD or CTS collision avoidance. |
| BER |
The Bit Error rate of the media. Set to 0 to disable
Reed Solomon
Forward Error Correction. The second number is the actual BER
used. The software will dynamically use RS(15,k) to RS(2047,k)
depending on the BER, MTBE and frame size.
|
| MTBE |
Target Mean time between error based on a continuously
transmitting at the current baud rate.
|
| Compression |
GZIP software data compression.
| None |
Do not use compression |
| Frame |
Compress at frame level only. |
| Streaming |
Streaming compression. Compression information are
maintained across frame, this achieve much higher level of
compression. The compression information are only reset on
timeout. |
|
| Corrections (Tx/Rx) |
Number of error corrected at remote and local
node. The SER (Symbol Error rate) is approximately Corrections
/ (Compression * Total Bytes) |
| Compression (Tx/Rx) |
Compression ratio of Transmit and Receive data |
| Total Bytes (Tx/Rx) |
Total number of bytes transmitted and received |
| Pre Tx File |
A file containing data that are normally
transmitted. The content of this file is run through the
compressor at the beginning of every transmission stream to
achieve higher level of compression. The Pre Rx File of the
receiver must be the same as the Pre Tx File of the
transmitter. |
| Pre Rx File |
A file containing data that are normally
received. The content of this file is run through the
decompressor at the beginning of every receive stream to
achieve higher level of compression. |
| Browse |
Browse for Pre transmission or receive files. |
