Multiple Binding Configuration SOAP and JSON

Multiple Binding Configuration SOAP and JSON

I try implement soap and json methods same wcf contract class. My problem
is when i remove namespace prefix (XXXX) at service name the soap methods
are working correctly but json methods aren't. if i kept the namespace
this time json methods are working correctly but soap methods thrown
errors.
My configuration like this; any idea?
thanks for all.
<serviceHostingEnvironment aspNetCompatibilityEnabled="true"
multipleSiteBindingsEnabled="true"></serviceHostingEnvironment>
<behaviors>
<serviceBehaviors>
<behavior name="ServiceBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug
includeExceptionDetailInFaults="true" />
</behavior>
</serviceBehaviors>
<endpointBehaviors >
<behavior name="JsonEndPointBehavior">
<webHttp />
</behavior>
<behavior name="SoapEndPointBehavior">
</behavior>
</endpointBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="ServiceBehavior"
name="XXXX.ServerSide">
<endpoint address=""
binding="webHttpBinding"
contract="XXXX.service.IServerSide"
behaviorConfiguration="JsonEndPointBehavior" />
<endpoint address="soap"
binding="basicHttpBinding"
contract="XXXX.IServerSide"
behaviorConfiguration="SoapEndPointBehavior"/>
</service>