AT Command Set and S-Registers

S-Register Format

S-Registers can be displayed and/or modified when the modem is in Command mode. To display the value of an S-Register, issue the following command:

TYPE: ATSn?

Where: n is the register number.

PRESS: Enter

To modify the value of an S-Register, issue the following command:

TYPE: ATSn=r

Where: n is the register number, and r is the new value.

PRESS: Enter

In Table 14-3, the value for n is listed in the S-Register column, and the value for r is listed in the Description column.

Table 14-3

(1 of 13)

391x Series S-Registers

S-Register

Description

DCP LCD

Command

 

 

Sequence

 

 

 

S0

Auto-Answer Ring Number1. Register determines number of rings the

Configure\Edit\

 

modem will count before automatically answering a call.

Line Dialer

 

Enter zero (0) if you do not want the modem to automatically answer

 

 

any calls. Otherwise, enter a value from 1–255 for the number of rings

 

 

to count before answering. The factory setting is 1.

 

 

 

 

S2

AT Escape Character. Register determines ASCII value used for

Configure\Edit\

 

escape sequence to enter Command mode from Data mode.

DTE Dialer

 

Enter a value from 0 to 127 for the escape character. Any value

 

 

greater than 127 causes the modem to disable the escape sequence.

 

 

When the escape sequence is disabled, the modem cannot return to

 

 

Command mode until the call is disconnected. The factory setting is 43

 

 

(+ key).

 

 

 

 

S3

Carriage Return Character. Register determines ASCII value used as

Configure\Edit\

 

the carriage return (Return key). This character is used to end

DTE Dialer

 

command lines and result codes.

 

 

Enter a value from 0 to 127 for the command end character. The

 

 

factory setting is 13 (carriage return key).

 

 

 

 

S4

Line Feed Character. Register determines ASCII value used as the

Configure\Edit\

 

line feed character.

DTE Dialer

 

Enter a value from 0–127 for the line feed character. The factory

 

 

setting is 10 (ASCII carriage return or line feed).

 

 

 

 

1 The range of allowable values may be restricted in some countries.

3910-A2-GN32-40

September 1998

14-15

Page 205
Image 205
Digicom 3910, 3911 operation manual Register Format, 391x Series S-Registers Description