KB177978 - Modem Does Not Dial All Numbers in Calling Card Rule

Article ID: 177978

Article Last Modified on 11/15/2006

Microsoft Windows 95

This article was previously published under Q177978

SYMPTOMS

When you attempt to use a calling card rule with Dial-Up Networking, HyperTerminal, Microsoft Fax, Phone Dialer, or any other program that uses Windows 95 telephony, your modem may not dial all the numbers in the dial string.

CAUSE

This behavior can occur if either of the following conditions exists:

The buffer on your modem is too small to store all the numbers in the calling card rule.
The following line exists in your modem's .inf file:
```
      HKR, Settings, DialSuffix,, ";"
						
```
The semicolon (;) between the quotation marks causes your modem not to dial all the numbers in the calling card rule.

RESOLUTION

To resolve this behavior, follow the steps in the appropriate section below:

The Buffer on Your Modem Is Too Small

To determine if the buffer on your modem is too small to store all the numbers in the calling card rule, follow these steps:

Click Start, point to Programs, and then click MS-DOS Prompt.
At the command prompt, type the following command, and then press ENTER:
echo atdt <dial string> > com<n>
where <n> is the number of the communications port your modem is connected to, and <dial string> are the numbers you specified in the calling card rule.

If your modem does not dial all the numbers in the calling card rule, the buffer on your modem is too small. To resolve this issue, contact the modem's manufacturer to inquire about a possible firmware update.

The .inf File Contains a "DialSuffix" Line with a Semicolon

Microsoft does not encourage or support changes to .inf files; therefore, Microsoft Technical Support does not support the procedure in this article. Although we have tested the following procedure and it appears to function as described, make a backup copy of your modem's .inf file before you proceed.

Use any text editor (such as Notepad) to open your modem's .inf file in the Windows\Inf folder. Please see the "More Information" section later in this article for the .inf file your particular modem uses.

NOTE: The Inf folder is a hidden folder. To view this folder, click Start, point to Programs, click Windows Explorer, click Options on the View menu, click Show All Files on the View tab, and then click OK.
Search for all instances of the following line, and remove the semicolon only (do not remove the quotation marks):
HKR, Settings, DialSuffix,, ";"
Save the .inf file, and then quit the text editor.
Click Start, point to Find, and then click Files Or Folders.
In the Named box, type drvdata.bin drvidx.bin, and then click Find Now.
In the list of found files, right-click each file, and then click Delete.
Close the Find window.
Click Start, point to Settings, and then click Control Panel.
Double-click Modems.
On the General tab, click your modem, and then click Remove.
Click Add.
If you want Windows 95 to detect your modem, click Next. If not, click the "Don't detect my modem; I will select it from a list" check box to select it, and then click Next.
If you chose to have Windows 95 detect your modem, Windows 95 queries the serial ports on your computer looking for a modem. If Windows 95 detects an incorrect modem, click Change, and then click the appropriate manufacturer and model for your modem. Click Next, and then skip to step 16.
If you choose to select your modem manually, click the appropriate manufacturer and model for your modem, and then click Next.
Click the communications port your modem uses, and then click Next.
Click Finish, and then click Close. The .bin files you deleted are replaced with new versions, and the updated .inf file for your modem is used.

MORE INFORMATION

The following table lists the modem .inf files included with Windows 95.

NOTE: If your modem is not listed, contact the modem's manufacturer for the name of the .inf file your modem uses.

   File           Modem manufacturer
   -----------------------------------------------------------------------
   Mdmati.inf     ATI Technologies Inc.
   Mdmatt.inf     AT&T
   Mdmaus.inf     This .inf file supports Australian modems that use
                  generic command set information
   Mdmboca.inf    Boca Research, Inc.
   Mdmcommu.inf   Communicate Limited
   Mdmcpi.inf     Computer Peripherals Inc.
   Mdmcpq.inf     Compaq Computer Corp, AST, DEC
   Mdmdsi.inf     Digicom Systems and Creative Labs
   Mdmexp.inf     EXP and Angia
   Mdmgatew.inf   Gateway 2000
   Mdmgen.inf     This .inf file supports modems that use generic command
                  set information
   Mdmgvc.inf     GVC, Packard Bell, IBM, Turbomodem, Compaq
   Mdmhayes.inf   Hayes, Megahertz, InteCom, Psion, Ventel
   Mdminfot.inf   Infotel and Creatix
   Mdmintel.inf   Intel Corp.
   Mdmintpc.inf   Intel Corp. (PCMCIA models)
   Mdmmcom.inf    Microcom, Inc.
   Mdmmetri.inf   Metricom, Inc.
   Mdmmhrtz.inf   Megahertz Corp.
   Mdmmoto.inf    Motorola
   Mdmmts.inf     MultiTech Systems
   Mdmnokia.inf   Nokia Mobile Phones
   Mdmnova.inf    NovaLink Technologies, Inc
   Mdmosi.inf     Ositech Communications, Inc.
   Mdmpace.inf    Pace Micro Communications Ltd
   Mdmpnb.inf     P.N.B
   Mdmpp.inf      Practical Peripherals
   Mdmracal.inf   Racal
   Mdmrock.inf    This .inf file supports Rockwell and some Cirrus chip
                  set modems (this encompasses many manufacturers and
                  models)
   Mdmrock2.inf   This .inf file supports Rockwell and some Cirrus chip
                  set modems
   Mdmsier.inf    Sierra Semiconductor
   Mdmsonix.inf   Sonix Communications Ltd
   Mdmspec.inf    This .inf file supports Mwave modems from Spectrum, IBM,
                  Best Data, and other manufacturers
   Mdmsupra.inf   Supra Corporation
   Mdmtdk.inf     TDK
   Mdmtelbt.inf   Telebit
   Mdmti.inf      Texas Instruments
   Mdmtosh.inf    Toshiba, Noteworthy
   Mdmusrcr.inf   U.S. Robotics, Inc. (Courier)
   Mdmusrsp.inf   U.S.Robotics, Inc. (Sportster)
   Mdmusrwp.inf   U.S. Robotics, Inc.
   Mdmvv.inf      This .inf file supports modems that use generic
                  VoiceView command set information
   Mdmzoom.inf    Zoom Telephonics, Inc.
   Mdmzyp.inf     Zypcom
   Mdmzyxel.inf   ZyXEL

For additional information about calling card rules in Windows 95, please see the following article in the Microsoft Knowledge Base:

167220 How to Create Custom Calling Card Rules

Additional query words: tapi dun hyperterm

Keywords: kbprb KB177978