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Page 474 of 894 NT7D16 Data Access card
553-3001-211 Standard 2.00 September 2004
— the DTE mode, and RI has cycled the appropriate number of times
and DCD is asserted on by the modem
Note: In Gateway mode, DCD must be asserted on. In modem mode,
only RI must be on. The DAC asserts DTR to the modem, and awaits
DCD from the modem.
Input requirements
All input must be in the same case (upper or lower).
The Hayes repeat command, A/, is used to immediately execute the last
command entered. The terminator character need not be entered. A complete
discussion of the Repeat command can be found later in this document.
Where a Dial Number is expected, you may enter the characters 0-9, #, and
comma (,). The characters @, P, R, T, and W are accepted, but ignored.
The maximum number of characters is 43. This limit includes the AT prefix,
and the record Terminator character, but does not include the ASCII space
character.
Echo
Throughout the dialogue phase, the DAC echoes all user input. In RS-232-C
modes 0, 1, 2, and 3, no inbound call messages are presented to the modem.
Prompts are presented only if the modem user originates the call. In modes 8,
9, 10, and 11, no prompts or characters echo under any circumstances. The
echo function can be turned off with a Hayes dialing command.
All prompts and responses issued by the system are displayed to the user
unless the display command has been disabled. Like the Repeat command,
this is explained later in this document.
Note: If the RS-232-C DAC Host modes (1, 2, 3, 8, 9, 10, 11, or 12) are
used, all attempts to enable the echo or display is ignored. Likewise, the
Hayes Reset command is also ignored.