MultiModemDSVD User Guide

 

4 AT Commands, S-Registers, and Result Codes

 

&T3

 

Start local digital loopback, V.54 Loop 2. If no connection ex-

 

 

 

ists, ERROR is returned.

 

&T4

 

Enables acknowledgment for remote digital loopback request.

 

&T5

 

Ignores acknowledgment for remote digital loopback request.

 

&T6

 

Requests a remote digital loopback, V.54 Loop 2, without self-

 

 

 

test. If no connection exists, ERROR is returned. The CON-

 

 

 

NECT XXXX message is displayed upon the start of the test.

 

&T7

 

Requests a remote digital loopback, V.54 Loop 2, with self test.

 

 

 

(In self test, a test pattern is looped back and checked by the

 

 

 

modem..) If no connection exists, ERROR is returned. When

 

 

 

the test is terminated, the number of detected errors is re-

 

 

 

ported to the computer.

 

&T8

 

Starts local analog loopback, V.54 Loop 3, with self test. If a

 

 

 

connection exists, the modem hangs up before the test begins.

 

 

 

When the test is terminated, the number of detected errors is

 

 

 

reported to the computer.

Command:

&V0

 

Display Current Configuration

Values:

 

0

Default:

 

 

None

Description:

 

 

Displays the current (active) configuration.

 

 

 

 

 

 

 

Note: See also the L5 command.

 

 

 

 

Command:

&V1

 

Display Last Connection Statistics

Values:

 

1

Default:

 

 

None

Description:

 

 

Displays statistics for the last connection.

Command:

&Wn

 

Store Current Configuration

Values:

 

 

n = 0 or 1

Default:

 

None

Description:

&W0

 

Stores current modem settings in nonvolatile memory as Profile 0.

 

 

 

Profile 0 is loaded instead of the factory defaults at power-on

 

 

 

(if &Y0 is set) and by the ATZ command.

 

&W1

 

Stores current modem settings in nonvolatile memory as Profile 1.

 

 

 

Profile 1 is loaded instead of the factory defaults at power-on

 

 

 

(if &Y1 is set) and by the ATZ1 command.

 

 

 

 

 

 

 

Note: See also the Z, &F, and &Y commands.

 

 

 

 

Command:

&Yn

 

Select Profile for Hard Reset

Values:

 

 

n = 0 or 1

Default:

 

None

Description:

&Y0

 

Select profile 0 to be loaded on power-up.

 

&Y1

 

Select profile 1 to be loaded on power-up.

Note: See also the &W and Z commands.

Multi-Tech Systems, Inc.

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