Modem Initialization Information


Using Initialization Strings

In Windows 95/98

  • Go to My Computer
  • Click the Dial-Up Networking icon
  • Right click on your Dial-Up connection icon
  • Select Properties
  • Click on the Configure button
  • Click on the Connection tab
  • Click on the Advanced button
  • You will now see an extra settings box on this screen. This is where you put the init string.

Windows 3.1 Trumpet Winsock

  • Open Trumpet Winsock
  • Goto Dialer, the down to Edit Scripts
  • You may have a number of different scripts here!
  • If you have modem.cmd, click on it which will then bring up notepad.
  • Look for the line $modeminit=”&f&c1&d2″ (&f&c1&d2 is the current init. To change it, just replace it with the correct string)
  • If you don’t have modem.cmd click on login.cmd. This will bring up notepad and look for the line $modeminit=”&f&c1&d2″ and replace the initialization string with whatever string you wish.
  • After changing the init string, select File and Save before exiting notepad.

Windows NT4.0

  • Click Start, Settings, Control Panel
  • In Control Panel, double click on the Modem Icon
  • Highlight your modem, and click on Properties
  • Now click on the Connection tab
  • Now click on the Advanced button
  • In Extra Settings, you can insert the desired Init String

Generic Initialization Strings

Generic, most modems   AT&F&C1&D2
Generic, most modems   AT&F&D0S0=0
Generic, most modems   ATX4V1Q0S7=70
Generic, AT&T v.34 Chipset   AT&F0&D0S0=0
Generic, AT&T v.32/v.32bis Chipset   AT&F0&D0\G0\N7\Q3\J0%C1S0=0
Generic, Rockwell Chipset   AT&F&D0&K3&Q5S0=0
Generic, Rockwell RPI Chipset   AT&F&D0&K3+H3S95=1S0=0
Generic, Rockwell RPI Chipset   AT&F&C1&D2&K3+H11 S95=1
Generic, Rockwell RPI Chipset   AT&F&C1&D2+H11S95=1
Generic, Rockwell RPI Chipset   AT&F&C1&D2&K3+H11S95=1
Generic, Rockwell RPI Chipset   AT&F&C1&D2&K3+H11Y0S95=1
Generic, Rockwell RPI Chipset   AT&F&C1&D2&K3E1V1+H11Y0S95=1
Generic, Rockwell RPI Chipset   AT&F&C1&D2&K3&Q5E1V1Q0X4+H11S95=1
Generic, Rockwell RPI Chipset AT&F&C1&D0&K3&Q5E1V1Q0+H11Y0S7=75S95=1
Generic, Rockwell RPI+ Chipset   AT&F&D0&K3+H11S0=0
Generic   AT&D2&C1X4V1Q0S7=70
Generic, Sierra Chipset   AT&F&D0\G0\N3\Q3\J0%C1S0=0
Generic, 9600   AT&F&C1&D2&K3%C0
Generic, 14.4 RPI   AT&F&C1&D2&K3+H3S95=1
Generic, 14.4   AT&F&C1&D2&K3
Generic, 14.4   AT&F&C1&D2&K3%C0
Generic, 14.4   AT&F&C1&D2&K3%C1
Generic, 14.4   AT&F&C1&D2S7=60
Generic, 14.4   AT&F&C1&D2&K3%C0
Generic, 14.4   AT&F&C1&D2
Generic, 19.2   AT&F&C1&D2S7=60
Generic, 28.8/33.6   AT&F&C1&D2
Generic, 28.8/33.6   AT&F&C1&D2&K3
Generic, 28.8/33.6   AT&F&C1&D2S7=60
Generic, 28.8/33.6   AT&F&C1&D2&K3%C0
Generic, 28.8/33.6   AT&F&C1&D2&K3%C1
Generic, 28.8/33.6   AT&F&C1&D2&K3%C1\N3
Generic, 28.8/33.6   AT&D2&C1X4V1Q0S7=70&Q5&K3
Generic, 56K   AT&FMS=56
Generic, 56K   AT&F1MS=56
Generic, 56K   AT&FMS=56S202=32
Generic, 56K   AT&F1MS=56S202=32
Generic, K56Flex   +ms=56,1
Generic, K56Flex   +ms=56,1,19200,56000,1,0
Generic, K56Flex (DOS, Win3.1, MAC) AT&F&C1&D0&C0+ms=56,1,19200,56000,1,0
Generic, K56Flex 56K Limited to 33.6   +ms=11,0,9600,33600
Generic, K56Flex/V.90  56K Limited to 33.6   +ms=11,1
Generic, X2   AT&F&C1&D2S15=128S32=98
Generic, X2/V.90 Limited to 33.6 (V.34)   S32=64
Generic, X2 Limited to 33.6 (V.34)   S32=32
Generic, X2/V.90 Winmodem Disable X2, Enable V.90   S32=34
Generic, X2/V.90 Winmodem Disable V.90, Enable X2   S32=66
Generic, Rockwell 56k HCF Chipset AT&F&C1&D2x4W1S7=60S11=60&QS546=2&K3S36=7
Generic, 56k HCF V.90   +ms=v90
Generic, 56k HCF K56flex   +ms=k56flex
Generic, 56k HCF 33.6 mode (V.34)   +ms=v34
Generic, 56k HCF V.90 (to disable V.90)   +ms=v34,0,19200,33600
Generic, 56k HCF V.90   AT&FE0V1S0=0&C1&D2W0
Generic, Rockwell Based V.90   AT&F&W&W1E0X4W2
Generic, Rockwell Based HCF V.90   AT&FE0V1S0=0&C1&D2W0
Generic, Rockwell Based V.90 (flex and V.34 disabled)   +MS=12,1,34667,56000


  Rockwell Based 56k Standard


  US Robotics Based 56k Standard


  ITU recognized 56k Standard

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