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ASCII Devices
Figure 1-3. SNA and ASCII Host Connections
*
For a list of SNA hosts that the 3708 supports, refer to "SNA Hosts" on
page 3-1.
When a 3708 port is connected to an SNA host, multiple end-user devices can
communicate at the same time over that one line. When a 3708 port is connected to
an ASCII host, only one end-user device at a time can communicate over that line.
However, multiple devices can communicate at the same time with an ASCII host if
each device has a separate line to the host.
Control Terminal
A control terminal can be used for monitoring and controlling the 3708. Any
display that operates in protocol conversion mode can be the control terminal if it is
logged on to the 3708 in control terminal mode. The 3708 allows only one display at
a time to be logged on in control terminal mode. The control terminal can be either
directly or remotely connected to the 3708.
The control terminal is also used to define the configuration of the 3708. An
IBM-supplied configuration allows many types of displays to be used as a control
terminal for defining the initial configuration of the 3708. The 3708 provides default
keyboard mappings for these terminals. (Refer to "ASCII End-User Devices" on
page 3-2 for a list of the default terminals.) You must have one of these terminals
to define the initial configuration for the 3708. After initial configuration, other
types of displays can be defined for use as a control terminal. "Step 3. Logging
onto the Control Terminal" on page 12-5 contains step-by-step procedures for
logging on to the control terminal.
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3708 Planning and Installation
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