How do I access a self-hosted WCF service from a remote device in the same network?

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WCF

web-hosting

I can't seen to get the configuration right (I am a beginner at this). My WCF service is being self-hosted on a machine and I want to access if from a different machine. I assume it's all about how I define the endpoints, but I don't know how. I tried with my external IP address like in the code below, but I get an "there is no endpoint listening at ..." error. How can I configure my application to achieve what I need?

What I have tried:

<system.serviceModel>
<behaviors>
  <serviceBehaviors>
    <behavior name="name">
      <serviceMetadata httpGetEnabled="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<services>
  <service name="Namespace.Name" behaviorConfiguration="name">
    <host>
      <baseAddresses>
        <add baseAddress="http://xxx.xxx.108.185:8888/MyService/"/>
      </baseAddresses>
    </host>
    <endpoint address="" binding="basicHttpBinding" contract="Namespace.IName" />
    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
  </service>
</services>