Как работает связь UART между двумя устройствами?

Я думаю, вы пропустили привязки здесь, вам нужно добавить webHttpBinding и basichttpbing под вкладкой bindings в теге system.serviceModel.

    <services>
  <service name="VInfotech.Server.Intranet.IntranetService" behaviorConfiguration="IntranetService.Service1Behavior">
    <!-- Service Endpoints -->
    <endpoint address="" binding="basicHttpBinding" bindingConfiguration="Binding1" contract="VInfotech.Server.Intranet.IIntranet">
      <!-- 
          Upon deployment, the following identity element should be removed or replaced to reflect the 
          identity under which the deployed service runs.  If removed, WCF will infer an appropriate identity 
          automatically.
      -->
      <identity>
        <dns value="localhost"/>
      </identity>
    </endpoint>
  </service>
  <service name="VInfotech.Server.Intranet.MobileServicesController" behaviorConfiguration="ServBehave">
    <endpoint address="RestService" bindingConfiguration="StreamedRequestWebBinding" binding="webHttpBinding" behaviorConfiguration="restPoxBehavior" contract="VInfotech.Server.Intranet.IMobileServices" />
  </service>
</services>
<bindings>
  <webHttpBinding>
    <binding name="StreamedRequestWebBinding"
    bypassProxyOnLocal="true"
             useDefaultWebProxy="false"
             hostNameComparisonMode="WeakWildcard"
             sendTimeout="10:15:00"
             openTimeout="10:15:00"
             receiveTimeout="10:15:00"
             maxReceivedMessageSize="9223372036854775807"
             maxBufferPoolSize="9223372036854775807"
             maxBufferSize="2147483647"
             transferMode="StreamedRequest" >
      <readerQuotas maxArrayLength="2147483647" maxStringContentLength="2147483647" />
    </binding>
  </webHttpBinding>
  <basicHttpBinding>
    <binding name="Binding1" closeTimeout="04:01:00" openTimeout="04:01:00" receiveTimeout="04:10:00" sendTimeout="04:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="1073741824" maxBufferPoolSize="1073741824" maxReceivedMessageSize="1073741824" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
      <readerQuotas maxDepth="1073741824" maxStringContentLength="1073741824" maxArrayLength="1073741824" maxBytesPerRead="1073741824" maxNameTableCharCount="1073741824"/>
    </binding>
    <!-- For Cyber Source bindings-->
    <binding name="ITransactionProcessor" closeTimeout="04:01:00" openTimeout="04:01:00" receiveTimeout="04:10:00" sendTimeout="04:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="1073741824" maxBufferPoolSize="1073741824" maxReceivedMessageSize="1073741824" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
      <readerQuotas maxDepth="1073741824" maxStringContentLength="1073741824" maxArrayLength="1073741824" maxBytesPerRead="1073741824" maxNameTableCharCount="1073741824"/>
      <security mode="TransportWithMessageCredential">
        <transport clientCredentialType="None" proxyCredentialType="None" realm=""/>
        <message clientCredentialType="UserName" algorithmSuite="Default"/>
      </security>
    </binding>
  </basicHttpBinding>
  <!--Cyber Source bindings ends here-->
</bindings>