(Telecompaper) Orange's wholesale division has launched a new service that will allow mobile operators to provide their customers with a 4G roaming service. The 'LTE Signalling' service will allow operators to provide end users with a significantly improved service of 4G networks while roaming outside their home country. Orange has already set up interconnection agreements with other major carriers, and is capable of offering connectivity with most LTE networks across Europe, Americas and Asia.