Dell Inspiron 10z (1120, Mid 2010) - Manual (Page 10)

Back to Contents Page
Modem S-Registers: Mini PCI Type 3B Data Fax Modem by 3Com User's Guide
Modem S-Registers
The AT command settings are stored in the S-Registers. S-Register values can be changed either by entering an AT command or by entering the
new value of the S-Register, preceded by AT, like this:
where n is the number of the S-Register you want to change and v is the new value of that S-Register.
Suppose you want to change from manual answer (when you answer the call) to auto-answer (where the modem picks up the call after a certain
number of rings), and have the call answered after three rings. Follow these steps:
1. Check the table below to find the S-Register that controls answering.
2. Enter your communications software.
3. Enter Terminal mode.
4. Type
ATS0=3 and press Enter. The modem will now answer a call after three rings.
ATSn=v
Register Function Range Default
S0 Number of rings before the modem
auto-answers a call. If set to 0, auto-
answer is disabled and manual answer
is in effect 0-255 0 rings
S1 Counts and logs the number of rings 0-255 0 rings
S2 Designates the ASCII character used to
indicate an escape character (refer to an
ASCII character conversion chart) 0-127 ASCII 43
S3 Designates the ASCII character used
for carriage returns (refer to an ASCII
character conversion chart) 0-127 ASCII 13
S4 Designates the ASCII character used
for line feeds (refer to an ASCII
character conversion chart) 0-127 ASCII 1
S5 Designates the ASCII character used
for backspaces 0-127 ASCII 8
S6 Dial tone wait time; if AT command X is
set to X2 or X4, the modem ignores this
register and dials as soon as it detects a
dial tone 2-255 6 seconds
S7 Carrier wait time 1-255 60 seconds
S8 Pause in dialing time (comma in dialing
string) 0-255 2 seconds
S9 Carrier detect validation time (1/10
second) 1-255 6
S10 Delay time between lost carrier and 1-255 7