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4 Keyboard dialing
User input characteristics
User KBD input must conform to the following characteristics:
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Prompt message characteristics
Prompt messages have the following characteristics:
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Call disconnection
During call setup, a KBD call attempt can be aborted by using CTRL–Z.
A prompt message is displayed to confirm the aborted call attempt.
After a call is established and KBD is not in operation, a data call can
be disconnected by one of the following actions:
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555-4001-110 Standard 09.03 July, 2002
Input can be in upper or lower case. All input is echoed to the
terminal (appears on the screen)
Input in response to prompts for numbers must be numeric.
Invalid input results in a prompt asking the user to re–enter the
input.
Input can be edited by using the Backspace key (ASCII 08) or the
@ key
The Delete key can be used to delete the entire input line.
The maximum number of characters allowed before a carriage
return is 40. Exceeding this number of characters results in a
re–prompt.
Input of more than one menu selection on a line is not allowed. A
terminal beep sounds and a backspace results if this occurs.
The input session can be aborted by using a Control- and Z- key
combination (CTRL-Z).
All prompts are in upper case.
All prompts are preceded by a line feed.
Prompts requiring user input are followed by a colon (:) and three
spaces.
Other prompts end with a carriage return and a line feed.
Enter three plus signs (+++) in succession (no spaces). The three
plus signs must be preceded and followed by at least one second of
no data entry. The time between entry of successive plus signs must
not exceed one second.
Log off from the host.
Place the on/off–line switch in the OFF position.
Power off the terminal.
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