3Com III Handbook page 170

Using a calling card
The Use calling card field enables you to use your calling card when
dialing your ISP or Intranet server. Keep in mind that there is usually
a delay before you enter your calling card number. When you define
your calling card number, you need to add commas at the beginning
to compensate for this delay. Each comma delays transmission of your
calling card number for two seconds.
To use a calling card:
1. Tap the Use calling card check box to select it.
Select this
box to use a
calling card
2. Enter your calling card number on the Use calling card line.
Note: It's a good idea to add at least three commas at the
beginning of your calling card number to compensate for
the cue delay.
3. Tap OK.
Page 162 Setting Preferences for Your Organizer
Enter your
calling card
number here