User`s manual

U.S. Robotics I -modem Command Reference
Using the AT Command Set • Page 1-3
A> Repeat the last-issued command until canceled by pressing any key. Do not type
AT or press Enter.
AT Attention preÞx: Informs the I-modem that a command is coming. AT must pre-
cede all commands except A/, A>, and +++.
S-registers
S-registers are addresses of places in memory where various timing parameters, redeÞni-
tions of selected ASCII characters, and other conÞguration settings are stored.
Initially, the S-register settings for each of the templates are the same. As with any setting
stored in non
volatile random access memory (NVRAM), however, you can overwrite an
S-register's stored value.
The default values listed in Table 4-2 are those that users typically require.