METHOD AND APPARATUS FOR ESTABLISHING A GROUP CALL IN A MULTIPLE WIRELESS TECHNOLOGY COMMUNICATION SYSTEM

摘要

A communication system is provided that sets up a group call in a second originating network when insufficient resources are available in the first originating network. The first originating network is one of a narrowband network and a broadband network and the second originating network is the other network of the narrowband and broadband networks. In response to determining that insufficient network resources are available, an infrastructure device arranges to set up an originating leg of the group call for the originating mobile device in the second originating network.