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.This module supports these features: reassembly of up to 255 buffers simultaneously; each buffer represents a packet; support for up to 4096 virtual circuits; support for ATM AAL 5; ATM LANE 1.0, including LEC, LES, BUS, and LECS.