Manufacturer

Extra Setting

What It Does
     

Any/Generic

 M0
M1		 Disable Modem Speaker
Enable Modem Speaker

Any/Generic

 L1
L3		 Set Modem Speaker Volume (Low)
Set Modem Speaker Volume (High)

Diamond Multimedia/Supra

s192.4=1

Aids in connecting to USR modems (supposedly)

Diamond Supra Max

AT&F+MS=K56

Force Flex Over v.90

Global Village

s32=82

Disable v.90

LT WinModem (Generic)

AT&FX
Flow Control: Software

Factory Default Settings

LT WinModem (Apollo/Mars Chipset)

-V90=1
-V90=0

Enable v.90
Disable v.90

LT WinModem (Venus Chipset)

s109=0
s109=1
s109=2

Enable K56Flex, Disable v.90
v.90 Preferred, K56Flex fallback
Enable v.90, disable K56Flex

LT WinModem (Other)

s38=0
s38=1

Disable v.90 and K56Flex
Enable K56Flex, Disable v.90

NewComm

+MS=X2,1,0,0

Force Fallback to X2

Rockwell Chipset Modems (K56Flex Based)

+MS=12,1
+MS=12,1,34667,56000
+MS=56,1
+MS=56,1,34000,56000
+MS=11,1

v.90 Preferred, K56Flex Fallback
v.90 Only
K56Flex Preferred, K56Flex Fallback
K56Flex Only
v.34 Only

Rockwell HCF Chipset (K56Flex Based)

+MS=V90
+MS=K56FLEX
+MS=V34

v.90 Preferred, K56Flex Fallback
K56Flex preferred, v.90 Fallback
v.34 Only

USR Sportster

s32=66
s32=34
s32=98
s32=2
s27=64
s15=128

Enable X2, Disable v.90
Enable v.90, Disable X2
Disable X2 and v.90
Enable X2 and v.90
Retransmission of data
Disable v.42bis

USR Courier

s58=32
s58=1
s58=33
s58=0

Enable X2, Disable v.90
Enable v.90, Disable X2
Disable X2 and v.90
Enable X2 and v.90

If you have a modem that is 33.6 or less and it doesn't want to make a connection, try this: add
four commas after the phone number. eg: 555 0188,,,, To disable call waiting, ad *70 , in front
of the local access number, eg: *70, 555 0188 

To disable K56 Flex Modulation, use
AT&F1S95=64+MS=V34 

To enable X2, use ATZ^M2%D2W2 or
AT&F1W1S11=50S10=150S0=0 

To disable X2, use or AT&F1S32=34 or
AT&FE0S32=34 or AT&F&D0&K3S32=34X4 

To disable V.90, use AT&F1S32=66 or
AT&FE0S32=66 or AT&F&D0&K3S32=66X4 

Adding L0 (L"zero") lowers modem speaker volumn.
L1 is low volumn, L2 Louder, L3 is Loudest. Adding
M0 (M"zero") shuts modem speaker off. 


14.4 and 28.8 Modems:


ATZ
AT&F
AT&F1

AT&F1X3L 
AT&F&D0
AT&F1S15=128


33.6 Modems:


ATZ
AT&F
AT&F1
AT&F1X3L
AT&F&D0
AT&F&C1&D0 
AT&F1S15=128
ATX3E0S15=80S0=0
AT&F1W1S10=150S11=64S0=0 
AT&Z1S0=0^Q3W2 (^ is "Shift 6")



K56 (Flex, X2 or V.90) Modems: 


AT&FE0S0=0
ATZ1S0=0^Q3W2
ATX3E0S15=80S0=0
ATX4W1S11=80S0=0
AT&FE0&D2W2S11=48
ATX1W0S15=150S11=80S0=0
ATZ^M2%D2W2 (^ is "Shift 6")

ATZ^M0%Q0V1X1 (^ is "Shift 6")
AT&F1W1S11=50S10=150S0=0
AT&F&C1&D2S11=60L3
ATE0&D2&S1&R0&C1&S0&D0
ATZE0&D2W2S11=50S10=150S0=0
AT&F1&C0&D2S11=50S10=255S0=0
ATZ^M0%V1X1S11=50S10=150S0=0R0
AT&FE0&D2^U28W1S11=50S10=150S0=0