Specifications
MultiModem ISI Hybrid Series, ISIHI-2S/2U 73
Chapter 4—MODEM AT Commands, S-Registers, Result Codes
Zn Reset Modem
n = 0 or 1
Default: none
The Z command resets the modem to the configuration last saved by the &W command.
The default values come from the customized configuration in NVRAM.
Z1 is the same as Z0, and functions identically.
&Yn Select Stored Configuration for Hard Reset
n = 0
Default: 0
This command is included for compatibility with applications that issue the &Y0
command. Modem functions are not changed.
&Y0 selects the profile stored at location 0 on power-up.
Modem Response (Result Code) Commands
ISIHI-2S/2U 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).
En 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.
Qn 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.
Vn 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.