[nznog] ATM Recommendation

Hi All, I have a client that has asked me to recommend a router to connect their Ethernet network to Telecoms ATM system. I don't know all that much about ATM, and I told them that but I thought I would ask you guys. What would you recommend as a low-cost entry ATM device? Better yet has anyone got something suitable that they want to sell on for cheep? Thanks -- Neil Fincham