8. S-Registers
A modem's S-registers store important configuration informa-
tion about your modem. Some S-registers provide status infor-
mation only and you cannot write to them (they are read-only).
Often these read-only S-registers reflect the status of AT com-
mand settings. Other S-registers are writeable, and can be
written to change the modem's behavior. To write to an S-
register, you use the Sn=x command. Registers that are writeable
are noted as such in this chapter.
Refer to Table 8-1 for a summary of the S-Registers. The complete
list of S-Registers are listed later in this chapter.
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