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To use a calling card or credit card when dialing long distance, it is best to place it in the prefix part of the Long Distance Dialing Rules, and then specify that the fax or phone book entry should use the long distance dialing rules.

Some of these numbers and calling card numbers involve pauses at various points for messages, and so forth. To bridge any such pauses, insert commas in the dialing string or dialing rule. A comma tells the modem to pause for two seconds. For example, you can use two commas for a four second pause. See How to tell the modem to pause while dialing a number for more information.