ATM LANE Dual PHY OC-3 Module (MMF) (WS-X5158)The ATM LANE dual PHY OC-3 module (MMF) provides one direct connection and one standby connection between the ATM network and the switch using two multimode, SC fiber-optic connectors. The ATM LANE dual PHY module MMF supports these features: Reassembly of up to 255 buffers simultaneously; each buffer represents a packet Support for up to 4096 virtual circuits Support for AAL 5 ATM LANE 1.0, including LEC, LES, BUS, and LECS