HOW MANY LETTERS CAN MY PHONE WORD HAVE?
You may have noticed that some Phone Words are longer than others.
The minimum number of digits required after dialing the 1300 / 1800 prefix is six. However most Phone Words are longer than six letters, and these 'extra letters' or digits are called Overdial. Phone Words with the '13' prefix have 4 letters after the prefix.
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13 MIDAS |
The maximum number of digits after dialing a 1300 / 1800 prefix is 10. The maximum number of digits after dialing a 13 prefix is 5.
Additional letters dialed are treated as 'dead' numbers and are ignored by the phone system, not affecting the call in any way. However, any Phone Word exceeding the maximum overdial length may cause technical problems on certain equipment and networks (see Australian Communications and Media Authority (ACMA) fact sheet).
In general, overdialing simply helps to make phone numbers easier to remember.
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