The SIP DTMF Trigger Detection and Notification functionality enables the to look for specific DTMF trigger patterns and to notify an external SIP entity when such patterns are detected.If a mid-call trigger is configured for a call, it is activated as soon as the call is connected. When the detects DTMF input matching the pattern criteria of the trigger, it sends the DTMF input in a an SIP INFO message to the SIP call peer with content type application/DTMF.Possible values are: To View DTMF TriggerOn the SBC main screen, go to Configuration > Profile Management > Category: DTMF Trigger Profile > DTMF Trigger. The DTMF Trigger window is displayed.  Image Modified
To Edit DTMF TriggerTo edit any of the a DTMF Trigger in the list, click the radio button next to the specific DTMF specific DTMF Trigger name. The Edit Selected DTMF Trigger window is displayed below.  Image Modified
Parameter | Length/Range | Description |
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Name | Up to 23 characters | Specifies the DTMF name. | State | N/A | Specifies the administrative state of this DTMF trigger.• • | Pattern | | Indicates the pattern in the digit-regular expression on which for the should to match. Multiple patterns can be strung together using "." You can string multiple comma-separated patterns together. If you do not enter a pattern value, S# is assumed to be as the default value. | Interdigit
Timeout | 0-65535 | Specifies the interdigit timer (maximum time between digits) in milliseconds. If 0 is specified, the timer is disabled. The range is 0 to 65535. The default value is 4000. | Longdigit
Duration | 0-65535 | Specifies the duration in milliseconds for a digit to be considered long. If 0 is specified, long digits are disabled. The range is 0 to 65525. The default value is 2000. |
Make the required changes and click Save.
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