Windows phone 8 发送wp8的Boghe

我有一个问题：

        SipCallback callback = new SipCallback();
        MySipStack mSipStack = new MySipStack(callback, realm, impi, impu);

        MyMessagingSession shortMessageSession = new MyMessagingSession(mSipStack,                 this.remotePartyUri);
        shortMessageSession.SendTextMessage(this.msgtextbox.Text);
        shortMessageSession.Dispose();

如上所述，我无法发送消息，出现以下错误：

file: "..\..\..\..\..\..\doubango\branches\2.0\doubango\tinyNET\src\tnet_utils.c" 
line: "357" 
MSG: Not implemented on your OS
***ERROR: function: "tsip_api_message_send_message()" 
file: "..\..\..\..\..\..\doubango\branches\2.0\doubango\tinySIP\src\api\tsip_api_message.c" 
line: "69" 
MSG: Stack not started.
*INFO: *** SIP Session destroyed ***

如何成功发送消息

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有人遇到过这个问题吗？