ISDN Modem Initialization AT Commands
ID: Q195988
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The information in this article applies to:
-
Microsoft Windows 98
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Microsoft Windows 95
SUMMARY
This article lists some modem initialization strings for the following
Integrated Services Digital Network (ISDN) modems:
- Motorola Bitsurfr/Pro
- USR Courier I
- 3Com Impact
- 3Com Impact IQ
These AT commands may be useful for troubleshooting ISDN modem-related
issues.
MORE INFORMATION
These following commands are ISDN modem initialization strings. You can
use these commands if you are having connectivity issues or if your modem
does not initialize or respond.
Motorola Bitsurfr/Pro
128K : AT&F&C1&D2\Q3%A2=95@B0=2%A4=1
64K : AT&F&C1&D2\q3%A2=2@B0=1%A4=1
V.120 : AT&F&C1&D2\Q3%A2=2%A4=1
USR Courier I
128K : AT*M=0*T1=00*V1=0*T2=00*V2=5&D2
64K : AT*M=0*T1=00*V1=1*T2=00*V2=5&D2
V.120 : AT*M=0*T1=00*V1=0*T2=00*V2=1&D2
3Com Impact
128K : ATS71=1S80=1&D2
64K : ATS71=1S80=0&D2
v.120 : ATS71=1S80=2&D2
3Com Impact IQ
128K : ATS71=1S80=1&D2
64K : ATS71=1S80=0&D2
v.120 : ATS71=1S80=0&D2
Using the Initialization Strings
Using the Modems tool in Control Panel:
- Click Start, point to Settings, click Control Panel, and then
double-click Modems.
- Click your ISDN modem, and then click Properties.
- Click the Connection tab, and then click Advanced.
- In the Extra Settings box, type the appropriate initialization string,
click OK, click OK, and then click Close.
Using HyperTerminal:
- Click Start, point to Programs, point to Accessories, point to
Communications, and then click HyperTerminal.
NOTE: If HyperTerminal is not installed, please see the following
article in the Microsoft Knowledge Base for more information about
installing additional components:
ARTICLE - ID: Q188125
TITLE : Windows 98 Components for Typical, Portable and
Compact Setup
- Double-click Hypertrm, type "test" (without quotation marks) in the
Name box, and then click OK.
- In the Connect Using box, click Direct To Com<x>, where <x> is the
serial port number your modem is connected to, and then click OK.
- In the Bits Per Second box, click 9600, and then click OK.
- Type the appropriate initialization string and then press ENTER.
NOTE: If you receive a "Can't open port" or "Port already open" error
message, you may have a hardware problem, a resource conflict, or
another program (such as a fax program) may be controlling the COM
port.
Additional query words:
98
Keywords : dun wintapi win95 wincomm win98
Version : WINDOWS:95
Platform : WINDOWS
Issue type : kbinfo
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