3Com PC Card User Manual - page 30

26

C

HAPTER

 5: U

SING

THE

 M

ODEM

For most applications, you can use the factory-default setting for the modem 

initialization string. To reset your modem to the factory defaults, use the AT 

command string AT&F. For more information, see “S Registers” on page 32.

Making a Call with 

HyperTerminal

HyperTerminal is the resident telecommunication application supplied with 

Windows 95 and Windows NT 4.0. This section shows you how to place a call 

using HyperTerminal.

1 Close any open applications you are not using. Be especially sure to close any 

communication programs.

2 Click on Start/Programs/Accessories/HyperTerminal.

3 Double-click the HyperTerminal icon to open the New Connection window.

In Windows 95 and Windows NT, you can find the Hyperterminal icon in 

Start/Programs/Accessories/Hyperterminal.

In Windows 98, look in Start/Programs/Accessories/Communications.

4 In the Connection Description dialog box, type a text description, such as an 

easy-to-remember name, for the connection and click OK.

5 In the Phone Number dialog box, type in the area code and phone number, for 

example 151217288528 (“1” followed by the area code and number of the Dell 

BBS).

6 In the Connect Using menu, be sure that you have selected the 3Com 10/100 + 

56K PC Card. If it does not appear, your modem is not installed correctly. 

7 Click OK.

8 When the Connect dialog box appears, choose the location and the dialing 

properties (for example, dial a 9 to access an outside line, dial a 1 before long 

distance, wait for a dial tone, and so forth) you require to make the call from your 

site.

9 Click Dial to initiate the call and make the connection.

You may hear a brief handshaking as the modem tries to establish a connection.

Making Calls from a 

Hotel or Business PBX

Normally, your LAN+Modem card waits for a dial tone before dialing. In some 

cases, however, a modem cannot detect a dial tone even when voice calls can be 

completed. This problem can occur when:

■

Dialing into a standard telephone network using nonstandard dial tone 

conventions

■

Placing a call from a country outside of the United States, where a different dial 

tone is used

■

Dialing through a business or hotel PBX or a voice-mail system that indicates 

new mail with a unique dial tone (travelers often find that hotel PBXs have 

unique dial tones)

■

Using telephones (such as cellular telephones) that require you to press a 

button before the dial tone can be heard

Try the following suggestions for restoring the standard dial tone: