MultiModemDSVD User Guide

4 AT Commands, S-Registers, and Result Codes

Command:

On

Return Online to Data Mode

Values:

 

0 or 1

Default:

 

None

Description:

O0 Exit online command mode and return to online data mode

 

 

without a retrain. Normally used after a +++ escape (see

 

 

+++AT<CR> escape sequence).

 

O1

Exit online command mode and return to online data mode

 

 

after a retrain.

Command:

P

Pulse Dialing

Values:

 

P, T

Default:

 

T

Description:

 

Forces pulse (non-touch-tone) dialing until a T command or

 

 

dial modifier is received.

Command:

Qn

Result Codes Enable/Disable

Values:

 

n = 0 or 1

Default:

 

0

Description:

Q0

Enable result codes.

 

Q1

Disable result codes.

Command:

Sr

Select Register

Values:

 

r = S-register number

Default:

 

None

Description:

 

Selects register Sr as the last register accessed. E.g., S0. The

 

 

command AT? can then be used to read the register, and the

 

 

command AT=n can then be used to set the register to value n.

Command: Sr=n

Set Register Value

Values:

 

r = S-register number; n varies

Default:

 

None

Description:

 

Set value of register Sr to n, where n is entered in decimal for-

 

 

mat. E.g., S0=1. If the short form AT=n is used, the value is

 

 

written to the last accessed S-register.

Command:

Sr?

Read Register Value

Values:

 

r = S-register number

Default:

 

None

Description:

 

Read value of register Sr and display it in 3-digit decimal for-

 

 

mat. E.g., S2? gives the response 043. If the short form AT? is

 

 

used, the last accessed S-register is read.

Command:

T

Tone Dialing

Values:

 

P, T

Default:

 

T

Description:

 

Forces DTMF (touch-tone) dialing until a P command or P dial

 

 

modifier is received.

Command:

Vn

Result Code Format

Values:

 

n = 0 or 1

Default:

 

1

Description:

V0

Displays result codes as digits (terse response).

 

V1

Displays result codes as words (verbose response).

Multi-Tech Systems, Inc.

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