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Call Manager Express with VB.net

I am trying to connect to Call Manager Express using Tapi3lib.dll within VB.net.

But I am having problems.

I can connect sucessfully to the Call Manager Express (well I think I can). but then get very strange behaviour.

If I send a DND request the phone tries to make a call.

If I send a createcall followed by a Connect I get the following exception

{"There is no connection for this connection ID (Exception from HRESULT: 0x80040004 (OLE_E_NOCONNECTION))"}

Does anybody know if you can use Tapi 3 with call manager express as all examples seem to use the TAPI 2 API.

If you can does anybody have any examples of code.

Thanks in advance

Daniel Wood

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