The SetMuteTransmitPhoneLineAudio procedure can be used to mute transmitted phone line audio. If phone line audio is muted for a phone line, locally recorded audio from multimedia hardware will not be transmitted out the phone line.
Note:
Multimedia hardware support must be enabled in the media engine in order for locally recorded audio to be transmitted out any phone line.

Namespace:  LanScape
Assembly:  LMEVoipManaged (in LMEVoipManaged.dll) Version: 6.0.5226.26700

Syntax

C#
public VoipMediaEngine..::.TELEPHONY_RETURN_VALUE SetMuteTransmitPhoneLineAudio(
	int PhoneLine,
	bool EnableState
)
Visual Basic (Declaration)
Public Function SetMuteTransmitPhoneLineAudio ( _
	PhoneLine As Integer, _
	EnableState As Boolean _
) As VoipMediaEngine..::.TELEPHONY_RETURN_VALUE
Visual C++
public:
VoipMediaEngine..::.TELEPHONY_RETURN_VALUE SetMuteTransmitPhoneLineAudio(
	int PhoneLine, 
	bool EnableState
)
J#
public VoipMediaEngine..::.TELEPHONY_RETURN_VALUE SetMuteTransmitPhoneLineAudio(
	int PhoneLine,
	boolean EnableState
)

Parameters

PhoneLine
Type: System..::.Int32
The zero based phone line that will have its mute setting modified.
EnableState
Type: System..::.Boolean
This value determines if the transmitted phone call audio will be muted. Set this parameter to a non zero value to mute all transmitted phone call audio. Set this parameter to zero to "un mute" transmitted phone call audio.

Return Value

If the function succeeds, the return value will be SipSuccess.

If the function fails, the return value will be one of the following values as specified by the VoipMediaEngine..::.TELEPHONY_RETURN_VALUE data type.

Return ValueDescription
SipCallFailure
This value is returned by telephony API procedures to indicate general API failure. This error value is used as a "catch all error". If you receive this error, check to make sure that all parameters specified in the API procedure call are correct. Particularly, verify that pointers to memory regions are valid. This error return value is only used if a mapping to another specific error value does not exist.

(API return value)

SipInvalidHandle
Application software specified an invalid telephony handle in one of the API procedures. This usually indicates memory corruption on the part of application software.

(API return value)

SipBadPhoneLine
Application software called a telephony API procedure and specified an invalid phone line. Phone lines are numbered starting from zero. This error is most commonly returned when attempting to access phone lines in excess of the max number of lines supported by the telephony engine.

(API return value)

Remarks

None.

See Also