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Connected-digit recognition types are used for connected-word recognition, that is, responses of more than one word or more than one digit string. The spoken string can be fixed in length from 1 to 10 digits, or it can be of a variable length. Grammars are provided for the 1-digit to 10-digit fixed-length and the 1-digit to 24-digit variable-length strings.The following table lists the connected-digit recognition types.
Note:
Languages other than US English do not allow strings of greater than 10 digits. With US English, use of a custom grammar is recommended.
Language |
Fixed Length 1-10 Digits |
Australian English |
AU_DIG |
Brazilian Portuguese |
BP_DIG |
Canadian French |
CF_DIG |
Castilian Spanish |
CS_DIG |
Dutch |
NL_DIG |
French |
FR_DIG |
German |
GR_DIG |
Italian |
IT_DIG |
Japanese |
JN_DIG |
Latin-American Spanish |
MS_DIG |
UK English |
UK_DIG |
US English |
US_DIG |
For better accuracy, you must specify the desired string length when selecting the recognition type for a fixed-length string. A U.S. telephone area code (614, for example), consists of three words; therefore, the minimum and maximum values are "3." If a variable-length string (US English only) of one to four words is required, "1" is the minimum value and "4" is the maximum value.
In IVR Designer applications, the minimum and maximum number of digits in the string are specified through the Minimum Length and Maximum Length fields on the Response tab of the Menu node, Prompt and Collect node, or Automenu node. For more information, see the appropriate node description in the Avaya IVR Designer Help.
Connected-digit recognition
Connected digits are strings of naturally spoken digits, which may or may not include a pause. All packages recognize spoken digit strings. Connected-digit recognition packages allow you to collect input by specifying a fixed-length of 1 to 10 digits or, for US English only, a variable-length of 1 to 24 digits. Number entry is an essential component if you want callers to input numbers with more than one digit, for example, "1, 3, 5" or "2, 4, 6, 8". Recognition accuracy is better for fixed-length strings than for variable-length strings.
Fixed-length versus variable-length connected digits
The capability to recognize fixed-length strings of 1 to 10 digits is provided with WholeWord speech recognition packages. A fixed-length string is a string of digits that is always made up of the same number of digits. For example, a U.S. Social Security number is a fixed-length number, since it always consists of nine digits. By contrast, a variable-length string indicates a string of digits that varies, for example, a street address.
Note:
The variable-length string is available for US English only.
Recognition accuracy is best when you use fixed-length strings. For strings longer than 10 digits, use of a custom grammar is recommended (for more information, see Custom grammars). Using the provided variable-length grammar as an alternative results in decreased accuracy. If your application must accept a variable-length digit string, you may be able to increase recognition accuracy by using a two-step entry process. First prompt the caller for the number of digits, and then prompt for the digits. For example:
"How many digits are in the next code?"
"Please say the three-digit code now."
The script can then select a fixed-length recognition type for the appropriate number of digits.
