Multi Tech Equipment ISIHI-2S Qn Asynchronous Communications Mode, View Numbers in Blacklist

Chapter 4—MODEM AT Commands, S-Registers, Result Codes

X1 causes the modem to blind dial, but in addition to the basic CONNECT code, it provides extended codes consisting of the word CONNECT and the speed of the connection (CONNECT 14400 or CONNECT 28800, for example). In this mode, the modem does not recognize or respond to dial tones or busy signals.

X2 causes the modem to wait for a dial tone before dialing. If it does not detect a dial tone within the time set by S6, the modem sends a NO DIALTONE result code to the terminal. In this mode, the modem provides extended result codes but does not respond to busy signals.

X3 causes the modem to blind dial, but also it looks for a busy signal, and if it detects one, it sends a BUSY result code to the terminal. In this mode, the modem provides extended result codes, but it does not respond to dial tones.

X4 causes the modem to look for a dial tone and a busy signal, and respond with NO DIALTONE or BUSY, as appropriate. It also provides extended result codes. It is the most useful setting for most data communication programs and is the default setting.

X5 causes the modem to look for a dial tone and a busy signal, and response with NO DIALTONE or BUSY, as appropriate. It also provides extended result codes. It is the most useful setting for most data communication programs and is the default setting.

X6 causes the modem to look for a dial tone and a busy signal, and respond with NO DIALTONE or BUSY, as appropriate. It also provides extended result codes. It is the most useful setting for most data communication programs and is the default setting.

X7 causes the modem to wait for a dial tone before dialing. If it does not detect a dial tone within the time set by S6, the modem sends only the basic result code to the terminal (ERROR, NO CARRIER, or CONNECT, for example). In this mode, the modem does not respond to busy signals.

&Qn Asynchronous Communications Mode

n = 0, 5, or 6 Default: &Q5

The &Qn command allows you to select the type of asynchronous communications mode for your modem.

Note: These commands are the same as several of the \Nn commands, described later in this chapter.

&Q0 selects asynchronous mode with data buffering. This is the same as \N0, non-error correction mode with data buffering.

&Q5 selects error control with data buffering. This is the same as \N3, V.42/MNP auto- reliable mode.

&Q6 selects asynchronous mode with data buffering. This is the same as \N0, non-error correction mode with data buffering.

%B View Numbers in Blacklist

If blacklisting is in effect, this command displays the numbers for which the last call attempted in the previous two hours failed. In countries that do not require blacklisting, the ERROR result code appears.

Modem

MultiModemISI Hybrid Series, ISIHI-2S 73