Reference Guide for the Model XM128 ISDN Digital Modem

D-4 Status Registers and Result Codes

S-Register Descriptions

In most bitmapped S-registers, the default bit value is 0 (which is the normal situation) and only

the nondefault situation is described. Some reserved bits are for factory use, and the user should

not change them. Table D -3 describes each basic S-register. Values followed by an asterisk (*) are

the factory default settings.

TableD-3. Basic S-registers ATSn=x

Command Function and description Default
S0= Sets the number of rings on which the Model
XM128 modem answers; 0 value disables
auto-answer.
000
S1= Counts and stores number of rings from an
incoming call. 000
S2= Defines escape code character, default [+]
(43 dec.). 043
S3= Defines ASCII carriage return. 013
S4= Defines ASCII line feed. 010
S5= Defines ASCII backspace. 008
S7= Sets duration, in number of seconds, that the
Model XM128 modem waits for a carrier. 060
S8= Sets duration, in seconds, for the pause and
repeat commands. For more information, refer
to TableC-1 on page C-2.
002