W&T 58031, Руководство пользователя

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W&T
The base configuration of the Com-Server
n
Telnet Echo
Default: active
When opening a Telnet session, negotiation between the
stations takes place on the network side to determine who
will generate the echo of the characters sent by the client.
Either the client application generates a local echo, or the
Telnet server generates a remote echo by immediately
returning all received data. The Telnet echo option on the
Com-Server is defined as follows:
Telnet Echo = active
The Com-Server negotiates a remote echo with the client
application, and the local echo is turned off. In this case the
device serially connected to the Com-Server must generate
the echo.
Telnet Echo = disabled
The Com-Server tells the client application when opening
the connection that it will not generate an echo, which
results there in activation of the local echo. The local echo
may have to be manually activated on the Telnet client.
n
Flush Buffer
Default: active
If this switch is active , the serial buffer is cleared each time
a new connection is opened; any residual data which cannot
be transmitted (e.g. handshake stop of the serial terminal
device) are thus lost. But if you connect a terminal device to
the Com-Server which for example requires a longer hands-
hake stop for program reasons, you can prevent clearing of
the buffer by deactivating the switch. In this way multiple
connections can be opened one after the other on the
network side and the data are accumulated in the buffer
until they are sent.