An experimental system that transports ATM (asynchronous transfermode) cells through a passive optical local network (APON) is described.It distributes a 155.52 Mb/s ATM stream from an ATM node to 64 customerends, synchronizing return cells to interleave at the exchange. Avariant of the Orwell protocol is used for bandwidth control. Keyfeatures demonstrated are clock phase alignment and an exchange opticalreceiver design to realize a practical system. APON provides dialogservice to those smaller customers that cannot be economically servedusing dedicated point-to-point links, permitting early economicdeployment of ATM to smaller, or start up customers
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