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This chapter provides an overview of S-Registers (status registers) available in your U-
90E data/fax modem.
6.1
S-Register Descriptions
The descriptions for each S-register are given below. In most bit-mapped S-registers, the
default bit value is 0. An asterisk marks non-0 default values. In some cases, default
values are shown in the reference column preceded by +. Some bits are reserved for
factory use and should not be changed.
6.1.1 Basic S-Registers "ATSn=x"
NOTE: The default values of S-Registers may change in different countries.
Command
Function & Description
S0=
Set the number of rings on which the modem will
answer. 0 value disable auto-answer
S1=
Counts and stores number of rings from an incoming
call
S2=
Define escape code character, default '+' (43 dec.).
A value of 128-255 disables the escape code
S3=
Define ASCII Carriage Return
S4=
Define ASCII Line Feed
S5=
Define ASCII Backspace. A value of 128-255
disables the Backspace key's delete function
Status Registers
Table 6-1 Basic S-Registers
U-90E Data/Fax Modem
Chapter 6
Status Registers
+Ref.
+000
+000
+043
+013
+010
+008
6-1
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