Instruction manual

FEATURES AND SERVICES
The Model 703 keyboard generates ASCII codes.
The terminal produces two audible tones
to indicate the completion of activities.
● Short Tone—A tone of less than one half-second indicates the normal termination of
an operation
● Long Tone—
A one-second tone indicates that an error or an abnormal operating
condition has been detected.
The Model 703 SAT Supplement contains a complete set of operating instructions for the
Model 703 Data Terminal. This document may be of use to customers who want to use the
terminal for other purposes in addition to system administration. All the information needed
to use the terminal as a SAT is included in the R3 Administration Manual.
The SAT can be connected to the system cabinets in several different ways:
● A direct connection within 50 feet when sharing the same AC outlet as the system
cabinets
● A direct on-premises connection at a distance greater than 50 feet from the system
cabinets
● A direct off-premises connection via the Central Office (OPS or CO trunk)
● An on-premises switched connection
● An off-premises switched connection.
Maximum cabling distances from the system cabinets are provided in Section 5, “Technical
Specifications.”
Installation details are provided in the System 25 Installation and Maintenance Manual.
The SAT may also be provided by the customer. It must be a RS-232 compatible terminal
that has a 25-pin connector providing signal on DTR (pin 20). In addition, it should have the
following characteristics:
Display: The minimum display size is 16 lines by 80 columns. The port provides both
carriage return and line feed characters to position the cursor at the start of the next line.
Destructive scrolling is also expected (new lines added at the bottom of the screen and top-
most lines disappear). Full duplex operation is required. Alphabetic ASCII characters in both
upper-case and lower-case will be sent to the SAT, along with ASCII numerals and some
basic ASCII symbols.
The device used must be capable of displaying ASCII alphabetic
characters when either upper-case or lower-case characters are received. However, upper-
to-lower case mapping (or vice-versa) for display is acceptable since no meaning is
associated with case.
Keyboard: The administration port requires ASCII alphanumeric characters as well as some
symbol characters.
If the keyboard generates only upper-case or only lower-case alphabetic
characters the administration port will respond appropriately, since upper and lower case
input is considered identical.
The SAT should be capable of sending the following ASCII
Characters.
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