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INSTALLATION AND SETUP 2-39
MON2000
JULY 2010 Modem Initialization Strings/Setup
With these switch settings, initialization string
&F was required. See Table 2-4 for further
explanation of these switch settings and the
parameters they control.
Table 2-4 DIP Switch Settings for U.S. Robotics Sportster Modem
Switch Function At GC At PC
1 UP (off) – Normal DTR; computer must provide
DTR signal for modem to accept commands.
DOWN (on) – Modem ignores DTR.
2 UP (off) – Verbal (word) results.
DOWN (on) – Numeric results.
3 UP (off) – Suppress result codes.
DOWN (on) – Enable result codes.
4 UP (off) – Display keyboard commands.
DOWN (on) – Suppress echo.
5 UP (off) – Modem answers on first ring or higher.
DOWN (on) – Disable auto answer.
6 UP (off) – Modem sends carrier detect (CD) signal
on connect, and drops CD on disconnect.
DOWN (on) – CD always on.
7 UP (off) – For power-on and ATZ reset, the Y or Y1
configuration is used from user-defined nonvolatile
memory (NVRAM).
DOWN (on) – For power-on and ATZ reset, the
generic template, &F0, is used from read only
memory (ROM).
8 UP (off) – Disable AT command set recognition.
DOWN (on) – Enable AT command set recognition.