MultiModemZPX User Guide

4 AT Commands, S-Registers, and Result Codes

Command:

&Dn

Data Terminal Ready (DTR) Control

Values:

 

n = 0, 1, 2, or 3

Default:

 

2

Description:

&D0

Modem ignores the true status of the DTR signal and responds

 

 

as if it is always on.

 

&D1

If DTR drops while in online data mode, the modem enters

 

 

command mode, issues an OK, and remains connected.

 

&D2

If DTR drops while in online data mode, the modem hangs up.

 

 

If the signal is not present, the modem will not answer or dial.

 

&D3

If DTR drops, the modem hangs up and resets as if an ATZ

 

 

command were issued.

Command:

&En

XON/XOFF Pacing Control

Values:

 

n = 12 or 13

Default:

 

12

Description:

&E12

Disables XON/XOFF pacing.

 

&E13

Enables XON/XOFF pacing. (&K4 must also be set.)

Note: &E13 has no effect if hardware control (&K3) is selected.

Command:

&Fn

Load Factory Settings

Values:

 

n = 0

Default:

 

None

Description:

&F0

Loads factory settings as active configuration.

Note: See also the Z command.

Command:

&Gn

V.22bis Guard Tone Control

Values:

 

n = 0, 1, or 2

Default:

 

0

Description:

&G0

Disables guard tone.

 

&G1

Sets guard tone to 550 Hz.

 

&G2

Sets guard tone to 1800 Hz.

Note: The &G command is not used in North America.

Command:

&Kn

Flow Control Selection

Values:

 

n = 0, 3, or 4

Defaults:

 

3

Description:

&K0

Disables flow control.

 

&K3

Enables CTS/RTS hardware flow control.

 

&K4

Enables XON/XOFF software flow control.

Command:

&Qn

Asynchronous Communications Mode

Values:

 

n = 0, 5, 6, 8, or 9

Default:

 

5

Description:

&Q0

Asynchronous with data buffering. Same as \N0.

 

&Q5

Error control with data buffering. Same as \N3.

 

&Q6

Asynchronous with data buffering. Same as \N0.

 

&Q8

MNP error control mode. If MNP error control is not estab-

 

 

lished, the modem falls back according to the setting in S36.

 

&Q9

V.42 or MNP error control mode. If neither error control is es-

 

 

tablished, the modem falls back according to the setting in S36.

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Multi-Tech Systems MT5634ZPX-PCI-V92 manual Data Terminal Ready DTR Control, XON/XOFF Pacing Control, Load Factory Settings

MT5634ZPX-PCI-V92 specifications

The Multi-Tech Systems MT5634ZPX-PCI-V92 is a high-performance V.92 data/fax modem designed to enhance communication capabilities in various applications. This modem is particularly well-suited for commercial and industrial environments where reliable connectivity is crucial.

One of the standout features of the MT5634ZPX-PCI-V92 is its support for the V.92 protocol, which allows for quicker uploads and improved connection speeds compared to earlier standards. It offers download speeds of up to 56 Kbps and upload speeds of up to 48 Kbps, making it an excellent choice for businesses that rely on time-sensitive data transmission. The modem's ability to maintain reliable connections even over noisy telephone lines is a critical aspect of its design, ensuring that users can depend on it for essential communications.

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