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Printable Version: RFC929.PDF
RFC 929 December 1984
Proposed Host-Front End Protocol
these options. The actual transmission of characters
related to the extended terminal features should be
provided by the Transmit command, either as part of the
normal Host-to-OPE data stream or by using
protocol-idiosyncratic parameters.
A more recent option, the Terminal Type option, should be
mentioned here. It permits one end of a connection to
request information about the terminal at the other end
or send information about the terminal at the local end.
This is convenient for systems that provide a wide
variety of terminal support, but it clearly does not
follow the model of reducing the MxN problem by use of a
virtual terminal. Its use is very straightforward in the
H-FP context. It only requires sending the terminal type
to the other end, and activating the Binary Transmission
Option.
2.3.5.4. Status Option
The Status option is enabled using the negotiation
mechanism of Telnet. However, the means to transfer
status information between OPE and the Host is provided
via the Status command. Therefore, details of status
negotiation are irrelevant to the interface to the
outboard Telnet.
2.3.6. Examples of the Command
The following example shows the command issued by a Host to
the OPE, requesting that the OPE negotiate with the other
side so that remote echo is performed.
C CO -pi DO 1
The numeral 1 is the option code for ECHO from the table
above. All of the simple options listed above use this same
basic format.
The options with additional parameters use straightforward
extensions of this syntax. For example, a possible usage of
Condition by the Host to set the approximate message size
is:
C CO -pi DO 4 DS 1024
Lilienkamp & Mandell & Padlipsky [Page 52]