Advantages of this method:
You can use this method with any
operating system and don't depend on the system programmer to have anticipated
the latest changes to your calling card's prompts.
Once you've figured out a number string that satisfies both your
modem and the calling card, you won't need a phone and a splitter and
two sets of wires; you can simply have the modem do all the work for
you.
Disadvantages of this method:
It may take several attempts to
determine the correct string of numbers and pauses to satisfy both the
modem and the calling card prompts.
If you're in a hotel with a per-call
fee, this can become expensive quickly; it's advisable to work out your
numbers at home or in an office (where an initial 9 may be required,
as in a hotel).
In addition, if your calling card company changes its
prompts, you will likely have to change your numbers.
Go through the calling card's system yourself, noting down the numbers
you type in response to its prompts and (if you need to wait for voice
messages) how many seconds you should give the modem between strings
of numbers. (At the end of your dialing, you should hear modem sounds over the dialup connection line.)
Next, start developing and testing a series of numbers and pauses
that will let your modem handle this automatically.
The following
codes are common to several makes and models of modems; check your
modem instructions to confirm whether your particular modem shares
these codes:
- A comma (,) often means one or two seconds of pause time.
- W often means wait for a dial tone.
So, if your calling card requires the following sequence live:
Dial 1-800-[calling card number], then 3 seconds of pause for voice
prompts, then option 1, then your PIN number, then 3 more seconds
of pause, then the dialup phone line you wish to connect to (for
example, 217-333-3700)
Many modems would navigate this correctly if given this string:
1800[calling card number],,,1,[your PIN here],,,2173333700
(Note: Don't include the brackets in the string; they're simply
there to indicate the parts that you would change.)
If your calling
card doesn't use voice prompts between the sections required, and
instead gives you a dial tone to prompt for the PIN and the number
to dial, then you can try something like:
1800[calling card number]W[your PIN here]W2173333700
Obviously, this method will require some trial runs to determine
what works with your calling card provider's prompts and your modem's
pauses.