Table A-1.

AT Commands, Cross-Referenced to Front Panel Options (Continued)

AT

Parameter &

 

Command

Option

Description

 

 

 

AT*RT2

=High BER

The High BER setting is less sensitive than the Low BER setting. NOTE: Motorola recom-

 

 

mends this setting for most applications.

 

 

Using V.34, V.32bis, V.32, or V.32 Uncoded, the modem retrains when the bit error rate (BER)

 

 

exceeds approximately 10-3for eight seconds.

 

 

Using V.22bis, the modem retrains when the bit-error rate (BER) exceeds approximately 10-3

 

 

for one second. When ARS is enabled, bit error rate is always used.

 

 

 

 

Speed Conver

Speed Conversion

 

 

Determines whether the modem uses the speed conversion feature. This option does not apply

 

 

when the modem is in the Direct or synchronous data transfer mode.

AT*SC0

=Off

The modem adjusts its DTE port speed to match the speed of the negotiated data link.

AT*SC1

=On

DTE-to-modem speed remains constant, regardless of the negotiated data link speed. (The

 

 

exception is Direct data mode, where the DTE-to-modem speed always matches the modem-

 

 

to-modem speed.)

 

 

 

 

Inactivity

DTE Inactivity

 

 

Lets you select how long the modem waits before disconnecting, when no data is transferred.

 

 

This option does not apply when the modem is set for the synchronous data transfer mode.

AT*SI

=Off

The Off option disables the inactivity timer.

AT*SI1

=3min

The modem disconnects if 3 minutes elapses without data transfer to or from the DTE.

AT*SI2

Inactivity=10min

The modem disconnects if 10 minutes elapses without data transfer to or from the DTE.

AT*SI3

=20min

The modem disconnects if 20 minutes elapses without data transfer to or from the DTE.

AT*SI4

=30min

The modem disconnects if 30 minutes elapses without data transfer to or from the DTE.

AT*SI5

=S30min

The inactivity timeout is controlled by the value set in S-Register 30.

 

EC ID

Error Correction ID

 

 

Sets the ID number that modems exchange when they attempt to establish an MNP link.

AT*SL0

=Default

The modem identifies itself with a generic MNP identification number. Use this option unless

 

 

you are certain that the remote modem(s) is a Motorola modem.

AT*SLl

=Codex

The modem identifies itself with a special MNP identification number. This allows one

 

 

Motorola modem to recognize another during an MNP link negotiation.

 

Mode

Data Transfer Mode

 

 

Sets the data transfer mode for asynchronous applications, or for synchronous applications

 

 

with the 326X-SDC. The setting governs the modem’s use of error correction. NOTE: To

 

 

enable SDC, select one of the reliable data transfer modes (Mode=Reliable, Auto Reliable, or

 

 

Speed Dependent Auto Reliable).

AT*SM0

=Direct

In Direct mode (asynchronous or synchronous), the modem does not use error correction. In

 

 

Direct mode, EC/DC OPT’s menu options are disabled. In data mode, the DTE speed must

 

 

match the modem speed.

AT*SM1

=Normal

In normal mode (asynchronous), the modem does not use error correction or data compression.

 

 

The break type is assumed to be standard. In data mode, the modem uses speed conversion (if

 

 

enabled). This lets the modem automatically accommodate DTEs of different speeds.

 

 

Enable terminal flow control and Modem Flow when operating in Normal mode. Selecting

 

 

Mode=Normal results in a Direct synchronous connection in the SDC mode.

 

 

 

Gray shading indicates country-specific options. See Appendix C for your country’s options.

Configuration

Quick-Reference

Configuration Quick Reference A-29

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Motorola V.34-SDC, and V.32bis, 326X V.34 manual Speed Conver, Inactivity