Owner`s manual

21
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Multiplexed data from individual terminal ports is sent and received by
the composite port in blocks. The Block Size for individual terminal
ports may be programmed from 1 to 255 characters. If a terminal port
requires a higher priority, the port would have a larger Block Size than
the other terminal ports. For example, if a port on a main frame
computer system is primarily sending data to a remote terminal, the
main frame port could be programmed to have a higher data block
size.
NOTE: It is recommended that the transmit Block Size for a particular
terminal port be no less than 10 characters due to resulting
performance degradation.
The default Block Size is 32 characters for all ports.
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The Telplex may be programmed to allow selected terminal devices to
enter into System mode. Entry into System mode allows selected
users to instruct the Telplex to enter into any of the other modes of
operation (see Section 4.3 ). The factory default Local Access is
enabled for Port 1 and disabled for all other ports.
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Status messages are sent to selected terminal ports under various
conditions. These messages inform the terminal port(s) if the local
Telplex is waiting for a connection or has a connection with its
designated remote port. Another status message will prompt terminal
ports with Local Access enabled to send +++ to enter into System
mode or Local mode (see Section 4.3.1 ).
NOTE: Terminal ports with Status Messages disabled will not receive
any of the messages shown in the following illustrations.