The GetNumActiveCalls API procedure can be called at any time in order to retrieve the total number of phone calls that are active. Any phone line that is in the SipInCall state is considered an active call.

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

Syntax

C#
public VoipMediaEngine..::.TELEPHONY_RETURN_VALUE GetNumActiveCalls(
	ref int NumActiveCalls
)
Visual Basic (Declaration)
Public Function GetNumActiveCalls ( _
	ByRef NumActiveCalls As Integer _
) As VoipMediaEngine..::.TELEPHONY_RETURN_VALUE
Visual C++
public:
VoipMediaEngine..::.TELEPHONY_RETURN_VALUE GetNumActiveCalls(
	int% NumActiveCalls
)
J#
public VoipMediaEngine..::.TELEPHONY_RETURN_VALUE GetNumActiveCalls(
	/** @ref */int NumActiveCalls
)

Parameters

NumActiveCalls
Type: System..::.Int32 %
A reference to a variable that will contain the total number of "active calls".

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)

Remarks

None.

See Also