Gateway Troubleshooting: Pressing Digit 9 Causes No-Match

<link event="nomatch"> <grammar mode="dtmf"

type="application/grammar+regex">99999</grammar>

</link>

Since the options are created with modal=false, the link grammar remains active in the Gateway DTMF-browser. On pressing 9, the Gateway starts to match this grammar and waits for the next input instead of returning a 'no-match' immediately.

1. In the VXML Server script, insert a hotlink to an inline grammar. When configuring the hotlink’s grammar, the values of the digits must not match: –The value of any digit that is expected in response to the Get Digits element. –The value of an option number used in any n_Option_Menu element.
2. If the inline grammar in Step 1 contains more than one digit, set the interdigittimeout in the root document properties to 5 seconds. For example:

   interdigittimeout 5s

Examples:

If the VXML Server script uses 3_Option_Menu, where 1, 2, and 9 are valid options, then the inline grammar can have the value 8, but cannot have the value 1, 2, or 9.

Similarly, if the VXML Server script uses 9_Option_Menu, where digits 1 through 9 inclusive are valid options, then the inline grammar can have the value 99, and the interdigittimeout must be set to 5s.

If you are using a GetDigits element and have set the follow range: min=2, max=4, then the link grammar can be 99999, and you must set the interdigittimeout to 5 seconds.

If the script contains an Option Menu as well as GetDigits elements, you only need to set the link grammar once.