AT&T SYSTEM 25 Manual page 175

Data Terminal Features Overview
This section discusses data terminals or PCs connected to System 25 data ports via data
modules (ADUs). The procedures in this section explain how to use a data terminal to
make System 25 data and voice calls, and how to change the options associated with the
System 25 data port.
Accessing the Command Mode Menu
The data features described in this section are accessed through the following Command
Mode Menu:
This menu allows users to make data and voice calls and change (or view) data port options.
Depending on how a data port is configured, the Command Mode menu can be accessed in
one of two ways. If the data port is configured to autobaud, BREAK and then RETURN
should be pressed. If the data port is not configured to autobaud, only the BREAK key is
pressed.
the keyboard does not have a BREAK key, or if a terminal emulator program is
NOTE: If
running on the PC, a specialized key (or combination of keys) may be required to send a
break signal.
The procedures in this section assume the data port is set to autobaud. The autobaud feature
allows the data port to automatically match the transmission speed of the data terminal. If
the data port is port configured to autobaud, the highest
used. See "Viewing and Modifying Data Port Options"
Selecting Menu Items
In the procedures that follow, it is necessary to select items from menus. There are two ways
to select an item:
Type the capitalized letter in the item. For example, to select eXit,
type or
x
or
Move the cursor (using the SPACEBAR) under the item and then
press RETURN.
<Data call> <Voice call> <Options> <Hangup>
.
X
specified transmission speed will be
on page 4-7 for more information.
Data Terminal Features Overview
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