MANEs include devices such as gateways, multipoint conference units (MCUs), Real-Time Transport Protocol (RTP) translators, RTP mixers, multimedia messaging centers (MMSCs), push-to-talk over cellular (PoC) servers, Internet Protocol (IP) encapsulators in digital video broadcasting-handheld (DVB-H) systems, or set-top boxes that forward broadcast transmissions locally to home wireless networks, fo