3CXPhone loose its connection to the API

[DIALOGSoftware]

We've got a 3CX v12 up to date with 3CXPhone up to date.
On only a computer (others 10 users are not concerned) running Win 7 64 bits, the 3CX Phone loose its connection to the 3CX Api Server.

As a consequence, the user loose its queue frequently.
Sometimes the 3CXPhone goes Out of the office whereas the user is on the same LAN

What have been done :
* fresh reinstall after deleting configuration in PROGRAMDATA
* firewall deactivation
* manual configuration instead of provisioning
* tries with another account

Do you know what could be done next to correct this issue ?

Thanks

 

[norekhov]

Please, post a bit of your log when it's reconnecting.
There might be some exceptions or other unusal info.

Log can be found at C:\Users\[user name]\AppData\Roaming\3CXPhone for Windows\Logs

 

[DIALOGSoftware]

Here comes the logs :

[24.12.2014 10:27:49.365][1] Error event caught, message: Cannot send request: Login
[24.12.2014 10:27:49.365][1] System.ServiceModel.ProtocolException: Le serveur distant a renvoyé une réponse inattendue : (502) Fiddler - Connection Failed. ---> System.Net.WebException: Le serveur distant a retourné une erreur : (502) Passerelle incorrecte.
à System.Net.HttpWebRequest.GetResponse()
à System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
--- Fin de la trace de la pile d'exception interne ---

Server stack trace:
à System.ServiceModel.Channels.HttpChannelUtilities.ValidateRequestReplyResponse(HttpWebRequest request, HttpWebResponse response, HttpChannelFactory`1 factory, WebException responseException, ChannelBinding channelBinding)
à System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
à System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
à System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
à System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
à System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
à System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]:
à System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
à System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
à MyPhoneClientChannelNet.MPWebServiceReference.MPWebServiceSoap.Call(CallRequest request)
à MyPhoneClientChannelNet.MPWebServiceReference.MPWebServiceSoapClient.MyPhoneClientChannelNet.MPWebServiceReference.MPWebServiceSoap.Call(CallRequest request)
à MyPhoneClientChannelNet.MPWebServiceReference.MPWebServiceSoapClient.Call(Byte[] request)
à MyPhoneClientChannelNet.Implementation.ClientChannelImpl.Request(IExtensible request)
à MyPhoneClientChannelNet.Implementation.ClientChannelImpl.doLogin()
à MyPhoneClientChannelNet.Implementation.ClientChannelImpl.RequestAsyncResult.<StartLogin>b__5(Object o)

[24.12.2014 10:27:49.433][1] Myphone server got disconnected, IsExplicitLogoutRequest = False
[24.12.2014 10:27:49.433][1] channel_Disconnected 2
[24.12.2014 10:27:49.433][1] Setting app channel to null, was null
[24.12.2014 10:27:49.433][1] UnsubscribeEventsFromMyPhoneAndCTI()
[24.12.2014 10:27:49.433][1] Setting tmp channel to null, was 36722706
[24.12.2014 10:27:49.433][1] UnsubscribeEventsFromMyPhoneAndCTI() finished
[24.12.2014 10:27:49.433][1] channel_Disconnected 3
[24.12.2014 10:27:49.434][1] IsExplicitLogoutRequest = False
[24.12.2014 10:27:49.441][1] LoginCallback() starts