NetMedia SitePlayer Telnet Series, Руководство пользователя

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SitePlayer Telnet User’s Manual
Data Transfer Mode
This option controls how data will be interpreted and transferred across the network connection.
Binary - Data will flow with no interpretation. All 8 bits of each character will be transferred un-
changed.
NVT - TCP/IP data received will be interpreted as Telnet Network Virtual Terminal commands. In
general, all data received will be transferred unchanged unless it is proceeded by a 255 (FF hex)
character. Serial data received by SitePlayer will be sent unchanged to the remote TCP/IP connec-
tion, unless it’s the 255 character, in which case two 255 characters will be automatically sent. See
Appendix A - Telnet Network Virtual Terminal (NVT) for more details.
Remote IP
The Remote IP specifies the remote IP address that a Telnet client connects to. The remote address may be a
connection to a Telnet server or any other TCP/IP connection including another SitePlayer running in Server
mode.
Remote Port
The Remote Port specifies the remote port number that a Telnet client connects to. The remote port may be
to a Telnet server or any other TCP/IP connection including another SitePlayer running in Server mode.
Retry Period
The Retry Period specifies the amount of time that a Telnet client waits after a TCP disconnect or failed con-
nection before attempting to connect again. A value of 0 causes SitePlayer to retry immediately.
Idle Disconnect Timeout
The Idle disconnect Timeout specifies the amount of time in seconds to wait after no characters are received
or sent before the TCP/IP connection is terminated. The idle disconnect timeout may be used in both Client
and Server modes. An Idle Disconnect Timeout of 0 disables the feature.
DTR Output State
DTR Output State specifies what state the DTR line output will be in and how Telnet will control it. This can
be useful when you have a microprocessor or other device which needs to know if a connection has been
established. The DTR line may briefly fluctuate when SitePlayer is first started or after a reset. Your attached
device will need to wait a few seconds after power is applied or after SitePlayer is reset before reading the
DTR line. The signal levels (High/Low) described here are RS232 levels. If you are using just a SItePlayer Mod-
ule, the logic levels will be inverted.
Always High - DTR line will always be high (default).
Always Low - DTR line will always be low.
Connect High - DTR line will be high when SitePlayer has an established connection on its Telnet
port. This applies to both client and server modes. The DTR line will be low when the connection
is terminated.
Connect Low - DTR line will be low when SitePlayer has an established connection on its Telnet
port. This applies to both client and server modes. The DTR line will be high when the connection
is terminated.
SitePlayer polls every second for various conditions to change. The above input parameters may take up to
one second before they are noticed. This means, for example, the changes in the serial port line states may
take up to a second before they are detected. The serial hardware lines should, therefore, be kept constant
for at least one second.
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