| ICallStartDTMFSignal Method | 
| Name | Description | |
|---|---|---|
| StartDTMFSignal(DtmfNamedEvents) | 
            Starts sending the given DTMF signal continously until the StopDTMFSignal method called. The signalling mode will be detected automatically.
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| StartDTMFSignal(DtmfNamedEvents, DtmfSignalingMode) | 
            Starts sending the given DTMF signal continously until the StopDTMFSignal method called. If the remote party does not support the specified method, no DTMF signal will be sent.
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