Multicast-capable ISP ^ | Office Network +----------|----------------------------------+ | | | | +---------------+ (Wifi) Mobile apps | | | Modem+ | Wifi | - - - - w/ embedded | | | Router | AP | AMT gateways | | +---------------+ | | | +=======+ | | +---Wired LAN---| AMT | | | | | relay | | | +----------------+ +=======+ | | | Legacy Router | | | | (unicast) | | | +----------------+ | | / | \ | | / | \ | | +--------+ +--------+ +--------+=========+ | | | Phones | | ConfRm | | Desks | AMT | | | | subnet | | subnet | | subnet | gateway | | | +--------+ +--------+ +--------+=========+ | | | +---------------------------------------------+