Multi-Tech Systems ISIHP-4S Modem Response Result Code Commands, En Echo Command Mode Characters

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).

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 modem’s 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.

82 MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD