Back to Contents Page

ATS (S-Register) Commands:   Motorola SM56 Software Modem User's Guide

The modem responds to the following ATS command options.

The letters AT (or at) must precede all commands except A/ and +++. Factory-default options are underlined.

S-Register

Option

Description

S0

 

Auto-Answer on Ring Number

 

S0=0

Disable

 

S0=n

Answer on Ring n; n=0 to 255

S1

 

Ring Count

 

S1=n

Counts the number of rings in an incoming call. If the modem is configured to auto-answer (S0 set to a non-zero option), when S1=S0, the modem answers the call.

S2

 

Select Escape Character

 

S2=n

Specifies ASCII character for Escape; n=0 to 255. Default = 43 (+)

S3

 

Select Carriage-Return Character

 

S3=n

Specifies ASCII character for Carriage-Return; n=0 to 127. Default = 13 (CR)

S4

 

Select Line-Feed Character

 

S4=n

Specifies ASCII character for Line-Feed; n=0 to 127. Default = 10 (LF)

S5

 

Select Backspace Character

 

S5=n

Specifies ASCII Character for Backspace; n=0 to 127. Default = 8 (BS)

S6

 

Blind Dial

 

S6=n

Before dialing, the modem goes off-hook and waits n seconds; n=0 to 255. Note: When the ATX2 or ATX4 option is in effect, the S6 value is disregarded. Default = 2

S7

 

Call Time-out

 

S7=n

Number of seconds in which connection must be established or call will be disconnected; n=1 to 255. Default = 60

S8

 

Pause Delay

 

S8=n

Pause for n seconds; n=0 to 255; for dial modifier in a dial string. Default = 2

S10

 

DCD Loss Disconnect

 

S10=n

Disconnect after n seconds; n=0 to 255 in 0.1 second increments; after DCD signal is de-asserted. Default = 14

S11

 

Tone Length

 

S11=n

Specifies duration, in 0.001 second increments, of DTMF tone when it is generated; n=60 to 255. Default =72

S12

 

Escape Code Guard Time

 

 

S12=n

 

Specifies the interval, in 0.02-second increments, that must be present on either side of the escape code (+++) for the modem to recognize the escape command and enter command mode. If S12=0, the speed at which you enter the escape sequence is not a factor. Default = 50

S18

 

Test Timer

 

S18=n

Specifies test execution duration; n=0 to 255. Default = 0

Table 1: ATS (S-Register) Commands

 Back to Contents Page