If your application will be challenged by other telephony software or devices, you can use this API procedure to remove authorization credentials that were previously set using the AddAuthorizationCredentials(String, String, String) API procedure. After you call this procedure, the specified authorization credentials are removed from the internal list maintained by the media engine.

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


public VoipMediaEngine..::.TELEPHONY_RETURN_VALUE DeleteAuthorizationCredentials(
	string UserName,
	string Password,
	string Realm
Visual Basic (Declaration)
Public Function DeleteAuthorizationCredentials ( _
	UserName As String, _
	Password As String, _
	Realm As String _
Visual C++
VoipMediaEngine..::.TELEPHONY_RETURN_VALUE DeleteAuthorizationCredentials(
	String^ UserName, 
	String^ Password, 
	String^ Realm
public VoipMediaEngine..::.TELEPHONY_RETURN_VALUE DeleteAuthorizationCredentials(
	String UserName,
	String Password,
	String Realm


Type: System..::.String
A user name that is used to authenticate with the far end challenging entity.
Type: System..::.String
A password that was used to authenticate with the far end challenging entity.
Type: System..::.String
The name of the realm that was being challenged.

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
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)

One of the telephony API procedures was called by application software and was passed a pointer to an invalid memory address. Normally this error will occur when application software passes NULL pointer values to the telephony API. For managed code applications, you should never see this error unless your process space has exhausted memory.

(API return value)

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)



See Also