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USRobotics,                                  S0=0E1Q0V1X4
USRobotics,                                  AT&M4&K1B0&A3&B1&D0&H1&I0&N0&R2
USRobotics, 2400PC MNP                       AT&FX4&K0&H1&R2
USRobotics, 14.4                             AT&F&A0&K0&M0
USRobotics, 14.4                             AT&K0&H0&D0&I0&R1
USRobotics, 14.4-Internal 1/2 Card           AT&N6&B0&M0&K0&H0&I0&R1&A0S27=32
USRobotics, 14.4-Internal 1/2 Card           AT&M0&N6&K0&H0
USRobotics, 14.4-Internal 1/2 Card           AT&F&A0&M0&K0
USRobotics, 14.4-Internal 1/2 Card           AT&f&ho&b0&m0&d2&a0&k0&n6
USRobotics, Mac & Fax                        AT&F&D0&H1
USRobotics, Mac & Fax                        AT&F1&D0&H1&K2&M5
USRobotics, Courier                          AT&F1&K0&M0
USRobotics, Courier 2400e/ 2400e/ps          AT&FX6&B6&H1&R
USRobotics, Courier 2400PC                   AT&FX6&B7&H1&R2
USRobotics, Courier HST                      AT&FX6&B1&H1&R2
USRobotics, Courier HST Dual                 AT&F&C1&D0
USRobotics, Courier HST V.42                 AT&FX6&B1&H1&R2&M4&A3
USRobotics, Courier HST-ASL                  AT&F&H1&R2&K3&B1&A3X7
USRobotics, Courier V.32                     AT&FX6&H1&R2&B1
USRobotics, Courier V.32 bis/as              AT&F&D0&H1&K2
USRobotics, Courier V.32bis-ASL              AT&F&H1&R2&K3&B1&A3X7
USRobotics, Courier 14.4 HST                 AT&FX4&B1&H1&R2&K0
USRobotics, Courier 28.8                     AT&FX4&B1&H1&R2&K0
USRobotics, Courier 28.8 Ext & Int           AT&F&B1&D0&A1&S0
USRobotics, Courier 28.8 Ext & Int           AT&F&B1&D0&A1&S0&K2&M5
USRobotics, Courier 28.8 Ext & Int           AT&F&B1&D0&A1&S0&K2&M0
USRobotics, Courier 28.8 PCMCIA              AT&F&A3&B1&H1&R2X4Q0M1
USRobotics, Courier 28.8 PCMCIA              AT&F&A3&B1&H1&R2X4Q0M1&K2&M5S54=32
USRobotics, Courier 28.8 PCMCIA              AT&F&A3&B1&H1&R2X4Q0M1&K0&M0S54=32
USRobotics, Courier Dual                     AT&FX4&B1&H1&R2&K0
USRobotics, Courier HST Dual Standard        AT&F&C1&D0
USRobotics, Courier HST Dual Standard        AT&FB0X4&A3&C1&D2&M4&H1&K1&B1&R2
USRobotics, Courier HST                      AT&FX4&B1&H1&R2&K0
USRobotics, Courier HST                      AT&F&C1&D
USRobotics, Courier HST D.S.                 AT&F1S0=0Q0V1X4B0F1&K0
USRobotics, Courier HST D.S. with ASL        AT&FS0=0Q0V1E1X4&H1I0&K0
USRobotics, Courier HST Dual 28.8            AT&FX4&B1&H1&R2&K0
USRobotics, Courier PS/2 FAX                 AT&F1S0=0Q0V1X4B0F1&K0
USRobotics, Courier V.32                     AT&FX4&B1&H1&R2&K0
USRobotics, Courier V.32bis                  AT&FX4&B1&H1&R2&K0
USRobotics, Courier V.32bis                  AT&F&D2&H1&K2
USRobotics, Courier V.32bis                  AT&F&D0&H1&K2
USRobotics, Courier V.32bis                  ATS0=1S7=60E1Q0V1&C1&D2&H0&K0&M0&N6&A3
USRobotics, Courier V.32bis FAX                 AT&F1S0=0Q0V1X4B0F1&K0
USRobotics, Courier V.32bis                     AT&FX4&A3&C1&D2&M4&H1&K1&B1&R2
USRobotics, Courier V.32bis/V.34                AT&FX4&B1&H1&R2&K0
USRobotics, Courier D.S. V.32 terbo Data/FAX    AT&F1S0=0Q0V1X4B0F1&K0 
USRobotics, Courier Dual Standard v.34          AT&F&B1&H1&K3&R2S56=128
USRobotics, Courier Dual Standard v.34          AT&F&B1&H1&K3&R2S56=128&N12
USRobotics, Courier v.Everything v.34 Int       AT&F1&D0S0=0 
USRobotics, Courier v.Everything v.34 Ext       AT&F1&D0S0=0 
USRobotics, Courier DS v.34 PCMCIA              AT&F1&D0S0=0 
USRobotics, Courier HST Dual Standard           AT&FB0X4&A3&C1&D2&M4&H1&K1&B1&R2
USRobotics, Courier HST/DS 16.8k                ATX4B0&A0&B0&H2&I0&K0&M0&N6a
USRobotics, Courier HST Dual Standard V.34 Fax  AT&FB0X4&A3&C1&D2&M4&H1&K1&B1&R2S7=60
USRobotics, Courier V.FC/V.34                   AT&FB0X4&A3&C1&D2&M4&H1&K1&B1&R2S7=60
USRobotics, Courier D.S. V.34 Data/FAX          AT&F1S0=0Q0V1X4B0F1&K0
USRobotics, Courier V.Everything                AT&FX4&B1&H1&R2&K0
USRobotics, Courier 56K X2 on V.90 off          s58=32
USRobotics, Courier 56K X2 off V.90 on          s58=1
USRobotics, Courier 56K V.34                    s58=33
USRobotics, Courier 56K V.90 and X2             s58=0
USRobotics, Courier 56K V.90 and X2             AT&F&C1&D2s58=1
USRobotics, Courier I-Modem ISDN/v.34 Int       AT&F1&D0S0=0 
USRobotics, Courier I-Modem ISDN/v.34 Ext       AT&F1&D0S0=0 
USRobotics, Courier I Modem ISDN                AT&F1*V2=5
USRobotics, Mac & Fax                           AT&F&C1&D2&H1&R2&K0
USRobotics, Mac & Fax                           AT&F&D2&H1
USRobotics, Mac & Fax                           AT&D0&F1&H1&K2&M5
USRobotics, V.32bis with ASL &A3                AT&F&C1&B1&H1H0&T0E1Q0V1X6S7=255 
USRobotics, Dual Standard                       AT&FX6&B1&H1&R2
USRobotics, Dual Standard V.32bis-ASL           AT&F&H1&R2&K3&B1&A3X7
USRobotics, D.S.                                AT&FS0=0Q0V1X4B0F1S27=128&K0
USRobotics, D.S.                                AT&FS0=0Q0V1X4B0F1&K0
USRobotics, DS v.32bis v.42bis ext              AT&M0&N6&A0&R1&H0&K0&I0&S0&B1X1
USRobotics, D.S. UK                             S0=0E1Q0V1F1B0&M0&K0
USRobotics, Dual Standard 16.8                  AT&F&C1&D2&H1&R2&K3&B1&A3X7
USRobotics, 16.8 Dual Standard                  AT&A0&M0&K0&N6B0S0=0X7
USRobotics, Dual Stardard V.34 FAX              AT&F1S0=0E1Q0V1X4&C1&D2&H1&I0&K0
USRobotics, Dual Standard V.32 Terbo            AT&F&C1&D2&H1&R2&K3&B1&A3X7
USRobotics, Sportster                           S0=0E1Q0V1X4&B1&C1&D2&H1&K0&N0
USRobotics, Sportster                           AT&H1&R2&I0
USRobotics, Sportster 2400 V.42bis              AT&FX4&B1&C1&D2&H1&K1&R2
USRobotics, Sportster 14.4 Mac&Fax              AT&F1&D0S0=0
USRobotics, Sportster 28.8 v.34 Mac&Fax         AT&F1&D0S0=0
USRobotics, Sportster                           AT&F1&K0&M0
USRobotics, Sportster                           AT&FX4&B1&C1&D2&H1&K3&R2&I
USRobotics, Sportster 9600                      AT&FX4&B1&C1&D2&H1&K3&R2
USRobotics, Sportster 9600                      AT&F&H1
USRobotics, Sportster 9600                      AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 9600                      AT&F&H1
USRobotics, Sportster 9600                      AT&M0&K0&N6
USRobotics, Sportster 9600 Fax                  S0=0E1Q0V1X4&B1&C1&D2&H1&K0&N0
USRobotics, Sportster 14.4                      AT&F1&H1&C1&D0X4
USRobotics, Sportster 14.4                      AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 14.4                      AT&F&H1&C1&D2X4
USRobotics, Sportster 14.4                      AT&FX4&A3&B1&D2&H1&I0&K1&M4&R2S7=60
USRobotics, Sportster 14.4                      AT&FX4&B1&C1&D2&H1&K3&R2
USRobotics, Sportster 14.4                      AT&F1&D0S0=0
USRobotics, Sportster 14.4 Ext                  AT&F1&D0S0=0
USRobotics, Sportster 14.4 Ext                  AT&F&A1&B1&D0&S0X4
USRobotics, Sportster 14.4 Fax                  S0=0E1Q0V1X4&B1&C1&D2&H1&K0&N0
USRobotics, Sportster 14.4 Fax                  ATS0=1S7=60E1QOV1&C1&D2&K0&N6&A3
USRobotics, Sportster 14.4 Fax                  ATS0=1S7=60E1Q0V1&C1&D2&K0&N6&A3
USRobotics, Sportster 14.4 V.FC Data/Fax        AT&F&I0&H1&R2&B1&C1&D2&M0&K0&A3E1X4Q0V1
USRobotics, Sportster Si 14.4 PC (w/WinRPI)     AT&F&D0&K3+H3S95=1S0=0
USRobotics, Sportster Si 14.4 Ext(w/WinRPI)     AT&F&D0&K3+H3S95=1S0=0
USRobotics, Sportster Vi 14.4 PC                AT&F1&D0S0=0
USRobotics, Sportster 14.4 PCMCIA               AT&F1&D0S0=0
USRobotics, Sportster 14.4 PCMCIA               AT&FX4&B1&H1&R2&K0
USRobotics, Sportster V.34                      AT&F&A3&B1&H1&R2&D0&C1X4S7=90
USRobotics, Sportster V.34                      AT&F0&A3&B1&H1&K3&R2&S1X4S40=2 
USRobotics, Sportster Vi 28.8, v.34 Ext         AT&F1&D0S0=0
USRobotics, Sportster Vi 28.8, v.34             AT&F1&D0S0=0
USRobotics, Sportster 28.8 VFC                  AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 28.8 VFC                  AT&F1
USRobotics, Sportster 28.8 V.34                 AT&F1&D0S0=0
USRobotics, Sportster 28.8 V.34                 AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 28.8 V.34                 AT&F&A3&B1&H1&R2&D2&C1X4S=0S7=90
USRobotics, Sportster 28.8 V.34                 AT&F&I0&H1&R2&B1&C1&D2&M0&K0&A3E1X4Q0V1 
USRobotics, Sportster 28.8 V.34 Ext             AT&F1&D0S0=0
USRobotics, Sportster 28.8 V.34 PCMCIA          AT&F1&D0S0=0
USRobotics, Sportster 28.8 V.34 PCMCIA          AT&F&A1&B1&D0&S0X4 
USRobotics, Sportster 28.8 V.34 PCMCIA          AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 28.8 V.34 PCMCIA          AT&F&A1&B1&D0&S0X4&K2&M5
USRobotics, Sportster 28.8 V.34 PCMCIA          AT&F&A1&B1&D0&S0X4&K0&M0
USRobotics, Sportster 28.8 / 33.6 Winmodem      AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 28.8 / 33.6               AT&F&A3&B1&H1&R2&D0&C1X4S7=90
USRobotics, Sportster 28.8 / 33.6               AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 28.8 / 33.6               AT&FX4&B1&C1&D2&H1&K3&R2
USRobotics, Sportster 28.8 / 33.6               AT&FX4&A3&B1&D2&H1&I0&K1&M4&R2S7=60 
USRobotics, Sportster 28.8 / 33.6               AT&F1S15=12
USRobotics, Sportster 28.8 / 33.6               AT&F&B1&H1&R2X4Q0V1E0M1S27=24S56=128
USRobotics, Sportster 28.8 / 33.6               AT&F1&B1&D2&H1&I0&K1&M4S13=1S27=48
USRobotics, Sportster 28.8 / 33.6               AT&F&B1&H1&R2&A2&K2X4S11=50
USRobotics, Sportster 28.8 / 33.6 Int and Ext   AT&F&A1&B1&D0&S0X4
USRobotics, Sportster 28.8 / 33.6 Int and Ext   AT&F&A1&B1&D0&S0X4&K2&M5
USRobotics, Sportster 28.8 / 33.6 Int and Ext   AT&F&A1&B1&D0&S0X4&K0&M0
USRobotics, Sportster(pre-Jan/96 ROM)           AT&F1&K0&M0S56=128
USRobotics, Sportster (spiral of death)         AT&F1S15=128
USRobotics, Sportster (spiral of death)         AT&F1&K0S15=128
USRobotics, Sportster 56K X2 (disables X2)      AT&F1&D0S15=128S32=34
USRobotics, Sportster 56K X2                    AT&FX4&B1&H1&R2&K0
USRobotics, Sportster 56K X2                    AT&F1&B1&D2&H1&I0&K1&M4S7=60
USRobotics, Sportster 56K X2                    AT&F1&K0&I0S33=32S15=128S27=64
USRobotics, Sportster 56K X2                    AT&F1&C1&D2S10=20S15=128S27=64
USRobotics, Sportster 56K X2                    AT&F1&K3
USRobotics, Sportster 56K X2                    AT&&C1&D2S15=128S32=98
            If user has Bell Call Answer, change X4 to X3 in above USR strings
USRobotics, Sportster 56K X2 on V.90 off        s32=66
USRobotics, Sportster 56K X2 off                s32=32
USRobotics, Sportster 56K X2 off V.90 on        s32=34
USRobotics, Sportster 56K V.90 connect at V.34  s32=98
USRobotics, Sportster 56K V.90 and X2           s32=2
USRobotics, V.90 Winmodem                       AT&FS13=64S32=34&K0
USRobotics, V.90 Winmodem                       s25=100
USRobotics, V.90 Winmodem                       s10=200
USRobotics, V32bis Quad Digital                 AT&FX4&B1&H1&R2&K0
USRobotics, WorldPort 9600 MNP5                 AT&F&C1&D2\Q3%C0
USRobotics, WorldPort 9600 MNP5                 AT&FL1%C0\J0\Q3
USRobotics, WorldPort 9600                      S0=0E1Q0V1X4\N3\J0\Q3\V1&C1&D2
USRobotics, WorldPort 9696 Fax                  AT&F&A3X4&B1&C1&D2&H1&K1&R2
USRobotics, WorldPort 14.4                      AT&FX4&A3&B1&C1&D3&H1&K1&M4S7=60 
USRobotics, WorldPort 14.4                      AT&FX4&B1&H1&R2&K0
USRobotics, WorldPort 14.4                      AT&FX4&B1&C1&D2&H1&K1&R2
USRobotics, WorldPort 14.4 Pocket               AT&F1&D0S0=0 
USRobotics, WorldPort 14.4 FAX PCMCIA           S0=0B0E1Q0V1X6&B1&C1&D2&H1&R2
USRobotics, WorldPort 14.4 PCMCIA               AT&FX4&B1&H1&R2&K0
USRobotics, WorldPort 14.4 FAX PCMCIA Norway    ATF0&K3\N3%C3\G0\J1
USRobotics, WorldPort 14.4 V.42bis FAX          S0=0B0E1Q0V1X6&B1&C1&D2&H1&R2
USRobotics, Worldport V.32 Pocket               AT&F&C1&D2\N3\Q3\J0\V1
USRobotics, WorldPort FAX/Data PCMCIA 2.0       AT&FX4&C1&D3&K3\J0\N3%C3S7=60S95=47
USRobotics, WorldPort D.S. Cellular FAX PCMCIA  AT&F1S0=0Q0V1X4B0F1&K0
USRobotics, WorldPort Palmtop FAX               AT&F1S0=0Q0V1X4B0F1&K0
USRobotics, ISDN                                AT&F1*V2=5S67=0S68=0S69=0
USRobotics, ISDN                                AT*V2=5
USRobotics, X2 56K Limited to 33.6              S32=32
USRobotics, X2, V.90 Limited to 33.6            S32=64
Init strings for USRobotics Winmodems are also listed at Sportster 56k V.90 and X2.
 
 
 
 One thing I've noticed with some recent Megahertz and 3Com Pcmcia modem cards when using NT4 and 
connecting to a 3Com total control box. If you disable PPP LCP extentions it seems to help get and
stay connected.
 
 US Robotics
(3Com) Company Info Page
 
 US
Robotics Modem Support Site
 
 3Com Modem
Support Page
 
 Winmodem WIN98 Tech
Update Page
 
 
 
 3Com 
owned  USRobotics , and  Megahertz  but is spinning them off into 
their own separate unit.. Other makes such as  Cardinal  and  Gateway
2000 (Telepath)  also make X2 modems.
 
 The remaining 3Com was bought by  HP  and the 3Com products (such as the 3Com Dual Lan 
Connection Modem) have been rebranded as HP prodcuts.
 
 I have noticed sometimes especialy on macs and problems with frequent discconections, if you
add S12=0 it seems to help.
 
 
 
 
 
 
 
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