Specifications

ISI3334/4 Hardware/Driver Installation Manual
18
COMMAND: $F n
VALUES: n = 0 or 1
DEFAULT: $F1
DESCRIPTION: $F0 selects do not fall back to normal
connect if CR received.
$F1 selects fall back to normal connect if
CR received.
COMMAND: $FC n
VALUES: n = 0 or 1
DEFAULT: $FC1
DESCRIPTION: $FC0 selects data pump to not transmit 5
second 2100Hz signal.
$FC1 selects data pump to transmit 5
second 2100Hz signal.
COMMAND: &G n
VALUES: n = 0, 1 or 2
DEFAULT: &G0
DESCRIPTION: &G0 turns off CCITT guard tones.
&G1 turns on CCITT 550 Hz guard tone.
&G2 turns on CCITT 1800 Hz guard tone.
(Not used in International models.)
COMMAND: H n
VALUES: n = 0 or 1
DEFAULT: n/a
DESCRIPTION: H0 selects Hang Up (go on hook).
H1 selects Go Off Hook.
COMMAND: $H n
VALUES: n = 1 thru 3
DEFAULT: Read Only Command
DESCRIPTION: $H1 selects Help Screen #1.
$H2 selects Help Screen #2.
$H3 selects Help Screen #3.