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MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD
Modem AT Commands & S-Registers
&Y0
selects the profile stored at location 0 on power-up.
Modem Response (Result Code) Commands
ISIHP modems can give responses to commands. The most common is
OK
,
but the modems also can alert you or your software to dial tones, busy
signals, connection speeds, and whether the connection is made with error
correction or compression enabled. These responses are called
result codes
;
they can be terse (numbers) or verbose (text).
E
n
Echo Command Mode Characters
n
= 0 or 1
Default:
E1
Normally, when you type commands on the keyboard, the modem echoes
the characters back to the computer or terminal, which displays them on the
monitor. Use the
E
command to turn this feature off and on.
E0
disables the echo.
E1
enables the echo.
Q
n
Result Codes Enable/Disable
n
= 0 or 1
Default:
Q0
Use the
Q
command to enable or disable result codes for applications such
as computer-controlled auto dialing.
Q0
(or
Q
) enables result codes.
Q1
disables result codes for applications such as computer-controlled auto-
dialing.
V
n
Result Codes (Verbose/Terse)
n
= 0 or 1
Default:
V1
The
V
command controls whether the modems result codes display as text
(
verbose
) or numeric (
terse
) messages. For example, if no carrier signal is
detected after dialing, the result can display either as
NO CARRIER
or as
the number
3
.
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